Publications

@conference{Gao2008b,

title = {Development of a probe designed to measure the effusivity and diffusivity of granular materials},

author = {Ying Gao and Didier Defer and Emmanuel Antczak and Alexis Chauchois and Olivier Carpentier},

year  = {2008},

date = {2008-01-01},

booktitle = {5th European Thermal-Sciences Conference},

address = {Eindhoven (Netherlands)},

note = {ACTI},

keywords = {ER5},

pubstate = {published},

tppubtype = {conference}

}

@conference{Shen2008b,

title = {Caractérisation thermophysique d’un béton - Application à la détection de dégradations induites par des cycles gel-dégel},

author = {Jibao Shen and Emmanuel Antczak and Didier Defer and Alexis Chauchois},

year  = {2008},

date = {2008-01-01},

booktitle = {XXVIèmes rencontres universitaires de Génie Civil},

address = {Nancy (France)},

note = {ACTI},

keywords = {ER5},

pubstate = {published},

tppubtype = {conference}

}

@article{,

title = {Origin of nickel in water solution of the chalk aquifer in the north of France and influence of geochemical factors},

author = {D Bernard and Jamal El Khattabi and E Lefevre and H Serhal and S Bastin-Lacherez and Isam Shahrour},

doi = {10.1007/s00254-007-0704-z},

year  = {2008},

date = {2008-01-01},

journal = {Environmental Geology},

volume = {53},

number = {5},

pages = {1129--1138},

abstract = {In the north of France, high registers of nickel are sometimes recorded within the chalk aquifer. In a confined context, the presence of pyrite in the covering clays or in the marcasite nodules encrusted in the clay may constitute a natural source of trace metals. With an objective of sanitary control, the limits of chemical contents regulating the quality of water destined for human consumption have been lowered by the European Framework Directive in the field of water policy (2000/60/EC). As a result, nickel limits have been reduced from 50 to 20 mu g/l. The analyses, carried out on three water catchment fields in our area of study, were centred on variable parameters (Eh, O-2(d), pH, Conductivity, T), major elements (SO4, NO3) and metals (Fe, Ni, Mn, Co). The acquired data enabled us to identify from one hand, the conditions which are presented within the site, special thanks to the evolution of nitrate and iron contents and on the other hand, the natural origin (geological) of nickel for two of the three sites studied based essentially on the evaluation of the Nickel/Cobalt ratio. Thus, on the first site, the evolution of nickel content and nitrate content showed the influence of the phenomenon of denitrification on the re-mobilisation of the nickel. Whereas on the second site, a high variation of total iron content and oxygen dissolved in solution highlighted a particular phenomenon of oxidation of the pyrite through molecular oxygen. Finally, the correlation with the sulphates clearly showed behaviour of the nickel, once released, that was entirely dependent on the phenomenon of adsorption on the iron and manganese hydroxides.},

note = {ACL},

keywords = {ER5},

pubstate = {published},

tppubtype = {article}

}

@article{LeblancNelias2007,

title = {Ball motion and sliding friction in a four-contact-point ball bearing},

author = {Alexandre Leblanc and Daniel Nelias},

year  = {2007},

date = {2007-01-01},

journal = {Journal of Tribology},

volume = {129},

number = {4},

pages = {801--808},

publisher = {American Society of Mechanical Engineers},

note = {ACL},

keywords = {ER5},

pubstate = {published},

tppubtype = {article}

}

@conference{Benzerga2007,

title = {Un modèle de délaminage d'un composite stratifié à renforts tissés},

author = {Djebbara Benzerga and Abdelkader Haddi and Kamel Tadjine and Antoine Lavie and Aissa Seddak},

year  = {2007},

date = {2007-01-01},

booktitle = {18e Congrès Français de Mécanique, CD-ROM, Grenoble},

note = {ACTI},

keywords = {ER5},

pubstate = {published},

tppubtype = {conference}

}

@book{Vanhille2007,

title = {Modélisation numérique en mécanique : introduction et mise en pratique},

author = {Christian Vanhille and Antoine Lavie and Cleofé Campos-Pozuelo},

year  = {2007},

date = {2007-01-01},

publisher = {Hermes Science-Lavoisier},

note = {OS},

keywords = {ER5},

pubstate = {published},

tppubtype = {book}

}

@conference{Younsi2007,

title = {Thermophysical characterization of phase change materials for the storage of solar energy in building},

author = {Zohir Younsi and Stéphane Lassue and Laurent Zalewski and Annabelle Joulin},

year  = {2007},

date = {2007-01-01},

booktitle = {Heat Transfer in Components and Systems for Sustainable Energy Technologies 18-20 April 2007, Chambery, France.},

note = {ACTI},

keywords = {ER5},

pubstate = {published},

tppubtype = {conference}

}

@article{Capron2007,

title = {Strong coupling for fluid structure interaction problems},

author = {Nicholas Capron and Gilmar Mompean and Hassane Naji},

doi = {https://doi.org/10.3166/remn.16.477-490},

year  = {2007},

date = {2007-01-01},

journal = {European Journal of Computational Mechanics},

volume = {16},

number = {3-4},

pages = {477-490},

note = {ACL},

keywords = {ER5},

pubstate = {published},

tppubtype = {article}

}

@article{Rechia2007,

title = {Numerical simulation of turbulent flow through a straight square duct using a near wall linear k - ε model},

author = {Ahmed Rechia and Hassane Naji and Gilmar Mompean and Ahmed El Marjani},

doi = {https://doi.org/10.1260/175095407782219256},

year  = {2007},

date = {2007-01-01},

journal = {International Journal of Multiphysics},

volume = {1},

number = {3},

pages = {317-336},

note = {ACL},

keywords = {ER5},

pubstate = {published},

tppubtype = {article}

}

@conference{Carp2007b,

title = {Identification in-situ des propriétés thermophysiques d'un sol par méthodes fréquentielles},

author = {Olivier Carpentier and Didier Defer and Emmanuel Antczak and Alexis Chauchois and Bruno Duthoit},

year  = {2007},

date = {2007-01-01},

booktitle = {VIIIème Colloque Universitaire Franco-Québécois sur la thermique des systèmes},

address = {Montréal (Canada)},

note = {ACTI},

keywords = {ER5},

pubstate = {published},

tppubtype = {conference}

}

@article{Antczak2007b,

title = {Monitoring and thermal characterisation of cement matrix materials using non-destructive testing},

author = {Emmanuel Antczak and Didier Defer and M Elaoami and Alexis Chauchois and Bruno Duthoit},

doi = {10.1016/j.ndteint.2007.02.006},

year  = {2007},

date = {2007-09-01},

journal = {NDT & E International},

volume = {40},

number = {6},

pages = {428--438},

publisher = {Elsevier BV},

note = {ACL},

keywords = {ER5},

pubstate = {published},

tppubtype = {article}

}

@conference{Benzerga2006,

title = {Modélisation et simulation du délaminage d'un nouveau composite stratifié},

author = {Djebbara Benzerga and Abdelkader Haddi and Kamel Tadjine and Aissa Seddak and Antoine Lavie},

year  = {2006},

date = {2006-01-01},

booktitle = {Journées d'Etudes en Structures et Matériaux, Oran, Algérie},

note = {ACTN},

keywords = {ER5},

pubstate = {published},

tppubtype = {conference}

}

@conference{chau2006ab,

title = {Caractérisation thermique d’un échantillon de béton par impédance thermique en utilisant la théorie des modèles d’ordre non entiers},

author = {Alexis Chauchois and Didier Defer and Emmanuel Antczak},

year  = {2006},

date = {2006-01-01},

booktitle = {XXIVèmes Rencontres Universitaires de Génie Civil},

address = {La Grande Motte (France)},

note = {ACTI},

keywords = {ER5},

pubstate = {published},

tppubtype = {conference}

}

@article{,

title = {Solute transport in sand and chalk: a probabilistic approach},

author = {E Carlier and Jamal El Khattabi and J L Potdevin},

doi = {10.1002/hyp.5931},

year  = {2006},

date = {2006-01-01},

journal = {Hydrological Processes},

volume = {20},

number = {5},

pages = {1047--1055},

abstract = {A probabilistic approach is used to simulate particle tracking for two types of porous medium. The first is sand grains with a single intergranular porosity. Particle tracking is carried out by advection and dispersion. The second is chalk granulates with intergranular and matrix porosities. Sorption can occur with advection and dispersion during particle tracking. Particle tracking is modelled as the sum of elementary steps with independent random variables in the sand medium. An exponential distribution is obtained for each elementary step and shows that the whole process is Markovian. A Gamma distribution or probability density function is then deduced. The relationships between dispersivity and the elementary step are given using the central limit theorem. Particle tracking in the chalky medium is a non-Markovian process. The probability density function depends on a power of the distance. Experimental simulations by dye tracer tests on a column have been performed for different distances and discharges. The probabilistic approach computations are in good agreement with the experimental data. The probabilistic computation seems an interesting and complementary approach to simulate transfer phenomena in porous media with respect to the traditional numerical methods. Copyright (c) 2006 John Wiley & Sons, Ltd.},

note = {ACL},

keywords = {ER5},

pubstate = {published},

tppubtype = {article}

}

@article{LeblancLavieVanhille2005,

title = {An acoustic resonance study of complex three-dimensional cavities by a particular integral method},

author = {Alexandre Leblanc and Antoine Lavie and Christian Vanhille},

year  = {2005},

date = {2005-01-01},

journal = {Acta acustica united with acustica},

volume = {91},

number = {5},

pages = {873--879},

publisher = {S. Hirzel Verlag},

note = {ACL},

keywords = {ER5},

pubstate = {published},

tppubtype = {article}

}

@article{Carpentier2005,

title = {The use of infrared thermographic and GPS topographic surveys to monitor spontaneous combustion of coal tips},

author = {Olivier Carpentier and Didier Defer and Emmanuel Antczak and Bruno Duthoit},

doi = {10.1016/j.applthermaleng.2004.11.017},

year  = {2005},

date = {2005-12-01},

journal = {Applied Thermal Engineering},

volume = {25},

number = {17-18},

pages = {2677--2686},

publisher = {Elsevier BV},

note = {ACL},

keywords = {ER5},

pubstate = {published},

tppubtype = {article}

}

@conference{chau2005ab,

title = {Assessment of thermal impedance from noninteger models applied to the concrete souding},

author = {Alexis Chauchois and Didier Defer and Emmanuel Antczak and Bruno Duthoit},

year  = {2005},

date = {2005-01-01},

booktitle = {Colloque International Francophone Pentom (performances et nouvelles technologies en maintenance)},

address = {Marrakech (Maroc)},

note = {ACTI},

keywords = {ER5},

pubstate = {published},

tppubtype = {conference}

}

@conference{Jark2005b,

title = {Characterization of a soil by thermal impedance, application to the in situ monitoring of the soil moisture},

author = {Chadi Jarkass and Emmanuel Antczak and Alexis Chauchois and Didier Defer and Bruno Duthoit},

year  = {2005},

date = {2005-01-01},

booktitle = {7ème Colloque International Franco-Quebecois « Thermique des Systèmes à Température Modérée »},

address = {Saint Malo (France)},

note = {ACTI},

keywords = {ER5},

pubstate = {published},

tppubtype = {conference}

}

@article{,

title = {Proposal for a probabilistic model of dispersion: A first validation},

author = {E Carlier and Jamal El Khattabi},

doi = {10.1016/j.mcm.2004.05.014},

year  = {2005},

date = {2005-01-01},

journal = {Mathematical and Computer Modelling},

volume = {42},

number = {9-10},

pages = {1137--1144},

abstract = {The probabilistic approach is used to simulate the particle tracking for two types of porous media. The first one is sand grains with a single intergranular porosity. The particle tracking is carried out by advection and dispersion. The second one is chalk granulates with intergranular and matrix porosities. Sorption can occur with advection and dispersion during particle tracking. The particle tracking is simulated as the sum of elementary steps with independent random variables in the sand medium. An exponential distribution is obtained for each elementary step and shows that the whole process is Markovian. A gamma distribution or probability density function is then deduced. The relationship between dispersivity and the elementary step is given using the central limit theorem. The particle tracking in the chalky medium is a non-Markovian process. The probability density function depends of a power to the distance. Experimental simulation by dye tracer tests on a column have been performed for different distances and discharges. The probabilistic approach computations are in good agreement with the experimental data. The probabilistic computation seems an interesting and complementary approach to simulate transfer phenomena in porous media with respect to the traditional numerical methods. (c) 2005 Elsevier Ltd. All rights reserved.},

note = {ACL},

keywords = {ER5},

pubstate = {published},

tppubtype = {article}

}

@article{doi:10.1088/1468-5248/5/1/038,

title = {Evaluation of explicit algebraic stress models using direct numerical simulations},

author = {Hassane Naji and Gilmar Mompean and Omar El-Yahyaoui},

url = {https://www.tandfonline.com/doi/abs/10.1088/1468-5248/5/1/038},

doi = {10.1088/1468-5248/5/1/038},

year  = {2004},

date = {2004-01-01},

journal = {Journal of Turbulence},

volume = {5},

pages = {N38},

publisher = {Taylor & Francis},

abstract = {The paper deals with evaluation and improvement of two recent explicit algebraic turbulent stress models (EASMs). The first model was derived by Gatski and Rumsey (2001 Closure Strategies for Turbulent and Transitional Flows ed B E Launder and N D Sandham (Cambridge: Cambridge University Press) pp 9–46) and the second is the one devised by Wallin and Johansson (2000 J. Fluid Mech. 403 89–132). These models are studied for the turbulent flow through a square duct which involves a secondary flow and significant anisotropy between the turbulent Reynolds stress tensor components. An a priori evaluation of these models is made using direct numerical simulation (DNS) results of Navier–Stokes equations. In order to handle wall proximity effects, a damping function is suggested. The material frame-indifference (MFI) of these models is studied using the eigenvectors of the rate-of-deformation tensor and their angular velocities. This procedure allows us to evaluate an objective vorticity tensor. For this flow, it is shown that the weak-equilibrium assumption used in the derivation of EASMs is verified, i.e. the material derivative of the anisotropy tensor b is negligeable (Db/Dt ≈ 0). Comparisons of results from EASM and from DNS shows that these models are able to predict reasonably well such flows.},

note = {ACL},

keywords = {ER5},

pubstate = {published},

tppubtype = {article}

}

@article{OULDAMER2004109,

title = {Attenuation of water coning using dual completion technology},

author = {Yacine Ould-amer and Salah Chikh and Hassane Naji},

url = {http://www.sciencedirect.com/science/article/pii/S092041050400066X},

doi = {https://doi.org/10.1016/j.petrol.2004.04.004},

issn = {0920-4105},

year  = {2004},

date = {2004-01-01},

journal = {J. Petroleum Science Engineering},

volume = {45},

number = {1},

pages = {109 - 122},

abstract = {Water coning causes a reduction of oil production and an increase of production costs. Dual completion (downhole water sink) is one of the methods adopted to attenuate water coning. This work describes numerical results associated with this completion technique. The water cone shape and water breakthrough time are investigated to define the mechanism and performance of this technical procedure. The numerical results show that dual completion deforms the shape of the cone. For instance, the top of the water–oil interface is shifted away from the well yielding (under high water production rates) oil breakthrough into water perforations. The water breakthrough is proportional to dimensionless density difference and horizontal permeability and inversely proportional to oil production rate, mobility, and anisotropy ratios. High oil production rates yield elevation of water coning height that intercepts oil flow. Paradoxically, high production rate at water sink is not recommended, the improvement of water breakthrough begins when dimensionless density difference is greater than 0.05. The dual completion technique delays water breakthrough time (BT*). In general, the BT* is delayed by two times that of single completion and critical oil rate is augmented compared to single completion.},

note = {ACL},

keywords = {ER5},

pubstate = {published},

tppubtype = {article}

}

@conference{Chau2003b,

title = {Auscultation de parements en béton par couplage d'impédance thermique et de thermographie infrarouge},

author = {Alexis Chauchois and Emmanuel Antczak and Didier Defer and Bruno Duthoit},

year  = {2003},

date = {2003-01-01},

booktitle = {6ème Colloque « Thermique des Systèmes à Température Modérée »},

address = {Québec (Canada)},

note = {ACTI},

keywords = {ER5},

pubstate = {published},

tppubtype = {conference}

}

@article{ChauchoisDidierEmmanuelEtAl2003b,

title = {Use of noninteger identification models for monitoring soil water content},

author = {Alexis Chauchois and Didier Defer and Emmanuel Antczak and Bruno Duthoit},

year  = {2003},

date = {2003-01-01},

journal = {Measurement Science and Technology},

volume = {14},

number = {6},

pages = {868},

publisher = {IOP Publishing},

note = {ACL},

keywords = {ER5},

pubstate = {published},

tppubtype = {article}

}

@article{El-Yahyaoui2002,

title = {Evaluation a priori d'un modèle non-linéaire de turbulence},

author = {Omar El-Yahyaoui and Gilmar Mompean and Hassane Naji},

url = {http://www.sciencedirect.com/science/article/pii/S1631072102014237},

doi = {https://doi.org/10.1016/S1631-0721(02)01423-7},

issn = {1631-0721},

year  = {2002},

date = {2002-01-01},

journal = {Comptes Rendus Mécanique},

volume = {330},

number = {1},

pages = {27 - 34},

abstract = {The aim of this work is a priori evaluation and improvement of a non-linear model for turbulent flows using the results from direct numerical simulation of Navier–Stokes equations. The algebraic explicit non-linear model recently proposed by Rumsey C.L. et al. [1] is studied. The data base used here comes from a direct numerical simulation of a turbulent flow through a square duct. For this flow, this study shows that the hypothesis of equilibrium state for the anisotropic tensor is correct. The analysis is made using the maps of the second and third invariants of the Reynolds stress tensor. The approach used permits to conclude that the model using a wall function improves the numerical prediction of the anisotropy.},

note = {ACL},

keywords = {ER5},

pubstate = {published},

tppubtype = {article}

}

@conference{Chau2002b,

title = {Characterization of the thermal effusivity of a system by fractional differential equations. Application to a wet soil exposed to natural weathering},

author = {Alexis Chauchois and Emmanuel Antczak and Didier Defer and Bruno Duthoit},

year  = {2002},

date = {2002-01-01},

booktitle = {16 TH ECTP (European Conference on Thermo Physical Properties},

address = {London (GB)},

note = {ACTI},

keywords = {ER5},

pubstate = {published},

tppubtype = {conference}

}

@article{DeferAntczakDuthoit2001,

title = {Measurement of low-thermal effusivity of building materials using thermal impedance method},

author = {Didier Defer and Emmanuel Antczak and Bruno Duthoit},

year  = {2001},

date = {2001-01-01},

journal = {Measurement Science and Technology},

volume = {12},

number = {5},

pages = {549},

publisher = {IOP Publishing},

note = {ACL},

keywords = {ER5},

pubstate = {published},

tppubtype = {article}

}

@article{DelacreDeferAntczakEtAl2001,

title = {Identification by thermal impedance: application to wet materials},

author = {Elisabeth Delacre and Didier Defer and Emmanuel Antczak and Bruno Duthoit},

year  = {2001},

date = {2001-01-01},

journal = {High Temperatures. High Pressures},

volume = {33},

number = {3},

pages = {337--344},

publisher = {Pion},

note = {ACL},

keywords = {ER5},

pubstate = {published},

tppubtype = {article}

}

@article{YOUNSI2001241,

title = {Dynamic study of a wind turbine blade with horizontal axis},

author = {Rachid Younsi and Ismail El-Batanony and Jean-Bernard Tritsch and Hassane Naji and Bernard Landjerit},

url = {http://www.sciencedirect.com/science/article/pii/S099775380001127X},

doi = {https://doi.org/10.1016/S0997-7538(00)01127-X},

issn = {0997-7538},

year  = {2001},

date = {2001-01-01},

journal = {Europ. J. Mechanics - A/Solids},

volume = {20},

number = {2},

pages = {241 - 252},

abstract = {The study of the dynamic behavior of a wind turbine with horizontal axis can be undertaken by various methods of analysis. The effects of the change of the aerodynamic flow (in the steady and unsteady cases), the variation of parameters of the cinematic movement (angle of attack, pitch angle and yaw angle) and the definition of subsystems characteristics that makes the wind turbine (blade, nacelle and pylon) allow one to characterize the structural dynamic behavior of the wind turbine. It is therefore necessary to develop these items. Once this is done, the structural dynamic behavior of the system can be improved. The term `improve' means the increase of the life duration by mastering the fatigue effects and the reduction of cost without sacrificing the aerodynamic output. The present study aims to examine the behavior of the blade, which is the main part of the wind turbine in that it that transmits forces to all other parts of the structure. The model is based on the theory of three-dimensional beams, under the assumption of variable sections of the type NACA 4415 airfoil, and takes into account membrane, transversal shear, flexion and free torsion effects. With regards to the aerodynamic loads (the lift, the drag and the pitching moment), a validation has been undertaken by considering experimental data and numerical results obtained by a CFD code (Fluent). The forces are obtained by means of a parametric CAD method interpolation of the aerodynamic poles by Bézier patch under geometrical constraints solved by a Simplex type algorithm. The emphasis is put on dynamic aspects by a complete processing of the dynamic equilibrium equation, applied to the wind turbine blade with horizontal axis.},

note = {ACL},

keywords = {ER5},

pubstate = {published},

tppubtype = {article}

}

@conference{chau2001ab,

title = {Monitoring of the water content of a porous environment by measurement of the thermal effusivity},

author = {Alexis Chauchois and Didier Defer and Emmanuel Antczak and Bruno Duthoit},

year  = {2001},

date = {2001-01-01},

booktitle = {5ème Colloque « Thermique des Systèmes à Température Modérée »},

address = {Lyon (France)},

note = {ACTI},

keywords = {ER5},

pubstate = {published},

tppubtype = {conference}

}

@article{DeferAntczakDuthoit1998,

title = {The characterization of thermophysical properties by thermal impedance measurements taken under random stimuli taking sensor-induced disturbance into account},

author = {Didier Defer and Emmanuel Antczak and Bruno Duthoit},

year  = {1998},

date = {1998-01-01},

journal = {Measurement Science and Technology},

volume = {9},

number = {3},

pages = {496},

publisher = {IOP Publishing},

note = {ACL},

keywords = {ER5},

pubstate = {published},

tppubtype = {article}

}

@phdthesis{Defer1994,

title = {Théorie du signal appliquée à la caractérisation thermique et au contrôle non destructif des ouvrages in situ sous sollicitations aléatoires},

author = {Didier Defer},

year  = {1994},

date = {1994-01-01},

note = {TH},

keywords = {ER5},

pubstate = {published},

tppubtype = {phdthesis}

}

@article{DuthoitDeferAntczakEtAl1994,

title = {In-situ characterization of soil effusivity by measurement of thermal admittance},

author = {Bruno Duthoit and Didier Defer and Emmanuel Antczak and Liliane Oter},

year  = {1994},

date = {1994-01-01},

journal = {High Temperatures. High Pressures},

volume = {26},

number = {2},

pages = {225--230},

publisher = {Pion},

note = {ACL},

keywords = {ER5},

pubstate = {published},

tppubtype = {article}

}

@article{NAJI1986169,

title = {The prediction of turbulent swirling jet flow},

author = {Hassane Naji},

url = {http://www.sciencedirect.com/science/article/pii/0017931086902255},

doi = {https://doi.org/10.1016/0017-9310(86)90225-5},

issn = {0017-9310},

year  = {1986},

date = {1986-01-01},

journal = {Int. J. Heat Mass Transfer},

volume = {29},

number = {2},

pages = {169 - 182},

abstract = {A space marching integration procedure is used to solve the Reynolds equations governing the axisymmetric incompressible turbulent swirling jet flow. Turbulence is modelled by the k−ε model with an isotropic turbulent viscosity. Besides mean velocity field, turbulent properties—such as Reynolds stresses, turbulent kinetic energy and dissipation rate—are obtained and the results are compared with experimental data. Agreement is quite encouraging and shows that the assumption of isotropic turbulent viscosity seems plausible. 

 

Résumé 

Une procédure de calcul pas à pas a été prise comme base de résolution numérique des équations de Reynolds gouvernant l'écoulement turbulent dans un jet tournant. Le caractère turbulent a été pris en compte par une modélisation simple basée sur le concept d'une viscosité turbulente dont la détermination a été réalisée àl'aide du modèle k−ε. Le calcul a permis de déterminer, en plus des profils de vitesses moyennes, les tensions de Reynolds, l'énergie cinétique de turbulence et son taux de dissipation. L'accord avec les résultats expérimentaux est relativement satisfaisant et montre que l'utilisation d'une viscosité turbulente isotropique semble correcte. 

 

Zusammenfassung 

Eine räumlich fortschreitende Integrationsmethode wurde verwendet, um die Reynolds'-schen Gleichungen zu lösen, welche die achsensymmetrische, inkompressible, turbulente Strömung eines rotierenden Strahls beschreiben. Als Turbulenzmodell wurde das k−ε-Modell mit isotroper turbulenter Viskosität gewählt. Auβer dem mittleren Geschwindigkeitsfeld wurden die turbulenten Eigenschaften, wie z.B. Reynolds'sche Schubspannung, kinetische Turbulenzenergie sowie die Dissipationsrate, berechnet. Die Ergebnisse wurden mit experimentellen Daten verglichen. Die Übereinstimmung ist relativ gut und zeigt, daβ die Annahme einer isotropen turbulenten Viskosität gerechtfertigt erscheint. 

 

Реферат 

Иcпoльзyeтcя мeтoд пpocтpaнcтвeннoгo интeгpиpoвaния для peшeния ypaвнeний Peйнoльдca, oпиcывaющиx ocecиммeтpичнoe нecжимaeмoe тypбyлeнтнoe зaкpyчeннoe cтpyйнoe тeчeниe. Иcпoльзyeтcя k−ε мoдeль c изoтpoпнoй тypбyлeнтнoй вязкocтью. Пoмимo pacпpeдeлeния ocpeднeнныx cкopocтeй oпpeдeлeны тaкиe xapaктepиcтики тypвyлeнтнocти, кaк нaпpяжeния Peйнoльдca, тypбyлeнтнaя кинeтичecкaя энepгия и cкopocть диccипaции. Пpoвeдeнo cpaвнeниe c экcпepимeнтaльными дaнными и пoлyчeнo oбнaдeживaющee cooтвeтcтвиe. Пoкaзaнo, чтo дoпyщeниe oб изoтpoпнoй тypбyлeнтнoй вязкocти являeтcя впoлнe oпpaвдaнным.},

note = {ACL},

keywords = {ER5},

pubstate = {published},

tppubtype = {article}

}