Academic literature on the topic 'Anisotropic turbulence models'

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Journal articles on the topic "Anisotropic turbulence models"

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Nazarov, F. Kh. "Comparing Turbulence Models for Swirling Flows." Herald of the Bauman Moscow State Technical University. Series Natural Sciences, no. 2 (95) (April 2021): 25–36. http://dx.doi.org/10.18698/1812-3368-2021-2-25-36.

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The paper considers a turbulent fluid flow in a rotating pipe, known as the Taylor --- Couette --- Poiseuille flow. Linear RANS models are not suitable for simulating this type of problems, since the turbulence in these flows is strongly anisotropic, which means that solving these problems requires models accounting for turbulence anisotropy. Modified linear models featuring corrections for flow rotations, such as the SARC model, make it possible to obtain satisfactory solutions. A new approach to turbulence problems has appeared recently. It allowed a novel two-fluid turbulence model to be cr
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CUI, G. X., C. X. XU, L. FANG, L. SHAO, and Z. S. ZHANG. "A new subgrid eddy-viscosity model for large-eddy simulation of anisotropic turbulence." Journal of Fluid Mechanics 582 (June 14, 2007): 377–97. http://dx.doi.org/10.1017/s002211200700599x.

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A new subgrid eddy-viscosity model is proposed in this paper. Full details of the derivation of the model are given with the assumption of homogeneous turbulence. The formulation of the model is based on the dynamic equation of the structure function of resolved scale turbulence. By means of the local volume average, the effect of the anisotropy is taken into account in the generalized Kolmogorov equation, which represents the equilibrium energy transfer in the inertial subrange. Since the proposed model is formulated directly from the filtered Navier–Stokes equation, the resulting subgrid edd
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Barbi, G., A. Chierici, V. Giovacchini, F. Quarta, and S. Manservisi. "Numerical simulation of a low Prandtl number flow over a backward facing step with an anisotropic four-equation turbulence model." Journal of Physics: Conference Series 2177, no. 1 (2022): 012006. http://dx.doi.org/10.1088/1742-6596/2177/1/012006.

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Abstract In recent years the use of liquid metals has become more and more popular for heat transfer applications in many fields ranging from IV generation fast nuclear reactors to solar power plants. Due to their low Prandtl number values, the similarity between dynamical and thermal fields cannot be assumed and sophisticated heat turbulence models are required to take into account the anisotropy of the turbulent heat transfer involving liquid metals. In the present work, we solve an anisotropic four-equation turbulence model coupled with the Reynolds Averaged Navier Stokes system of equation
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Chang, Ning, Zelong Yuan, Yunpeng Wang, and Jianchun Wang. "The effect of filter anisotropy on the large eddy simulation of turbulence." Physics of Fluids 35, no. 3 (2023): 035134. http://dx.doi.org/10.1063/5.0142643.

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We study the effect of filter anisotropy and sub-filter scale (SFS) dynamics on the accuracy of large eddy simulation (LES) of turbulence, by using several types of SFS models including the dynamic Smagorinsky model (DSM), dynamic mixed model (DMM), and the direct deconvolution model (DDM) with the anisotropic filter. The aspect ratios (AR) of the filters for LES range from 1 to 16. We show that the DDM is capable of predicting SFS stresses accurately at highly anisotropic filter. In the a priori study, the correlation coefficients of SFS stress reconstructed by the DDM are over 90%, which are
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Adduci Faria, S., R. Santos-Lima, and E. M. de Gouveia Dal Pino. "Effective Viscosity in the Intracluster Medium During Magnetic Field Amplification via Turbulent Dynamo." Astrophysical Journal 988, no. 1 (2025): 34. https://doi.org/10.3847/1538-4357/addc5f.

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Abstract Galaxy clusters, the largest gravitationally bound structures, host a hot, diffuse plasma with poorly understood viscosity and magnetic field amplification. Astrophysical plasmas are often modeled with magnetohydrodynamics (MHD), but low collision rates in environments such as the intracluster medium (ICM) hinder thermodynamic equilibrium, causing pressure anisotropies and high viscosity. High-β plasmas, dominated by thermal pressure, are prone to instabilities (e.g., firehose or mirror) that limit anisotropy, reduce viscosity, and enable small-scale dynamo-driven magnetic amplificati
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Faragó, Dávid, and Péter Bencs. "Measurement of turbulence properties." Analecta Technica Szegedinensia 14, no. 1 (2020): 67–75. http://dx.doi.org/10.14232/analecta.2020.1.67-75.

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The aim of the research is to investigate anisotropic turbulence intensities, id est to investigate the distribution of Reynolds stresses and energy spectra in a square cross-section channel, downstream of a semi-active jet turbulence grid generating anisotropic turbulent airflow. In addition to the semi-active jet turbulence grid, another type of turbulence grid was developed and experimentally investigated. This grid contains vertical, flexible strips of aluminum (in this case, there are no perpendicular (horizontal) grid elements), which vibrate at a frequency depending on the velocity of t
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DEN TOONDER, J. M. J., M. A. HULSEN, G. D. C. KUIKEN, and F. T. M. NIEUWSTADT. "Drag reduction by polymer additives in a turbulent pipe flow: numerical and laboratory experiments." Journal of Fluid Mechanics 337 (April 25, 1997): 193–231. http://dx.doi.org/10.1017/s0022112097004850.

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In order to study the roles of stress anisotropy and of elasticity in the mechanism of drag reduction by polymer additives we investigate a turbulent pipe flow of a dilute polymer solution. The investigation is carried out by means of direct numerical simulation (DNS) and laser Doppler velocimetry (LDV). In our DNS two different models are used to describe the effects of polymers on the flow. The first is a constitutive equation based on Batchelor's theory of elongated particles suspended in a Newtonian solvent which models the viscous anisotropic effects caused by the polymer orientation. The
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Cui, Linyan. "Atmosphere turbulence MTF models in moderate-to-strong anisotropic turbulence." Optik 130 (February 2017): 68–75. http://dx.doi.org/10.1016/j.ijleo.2016.11.012.

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Cambon, Claude, and Julian F. Scott. "LINEAR AND NONLINEAR MODELS OF ANISOTROPIC TURBULENCE." Annual Review of Fluid Mechanics 31, no. 1 (1999): 1–53. http://dx.doi.org/10.1146/annurev.fluid.31.1.1.

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Hocking, W. K., and J. Röttger. "The structure of turbulence in the middle and lower atmosphere seen by and deduced from MF, HF and VHF radar, with special emphasis on small-scale features and anisotropy." Annales Geophysicae 19, no. 8 (2001): 933–44. http://dx.doi.org/10.5194/angeo-19-933-2001.

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Abstract. An overview of the turbulent structures seen by MF, HF and VHF radars in the troposphere, stratosphere and mesosphere is presented, drawing on evidence from previous radar measurements, in situ studies, laboratory observations, observations at frequencies other than those under focus, and modelling studies. We are particularly interested in structures at scales less than one radar pulse length, and smaller than the beam width, and especially the degree of anisotropy of turbulence at these scales. Previous radar observations are especially important in regard to the degree of anisotro
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Dissertations / Theses on the topic "Anisotropic turbulence models"

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Wall, Dylan Joseph. "Anisotropic Turbulence Models for Wakes in an Active Ocean Environment." Diss., Virginia Tech, 2021. http://hdl.handle.net/10919/104162.

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A set of second-moment closure turbulence models are implemented for the study of wake evolution in an oceanic environment. The effects of density stratification are considered, and the models are validated against laboratory experiments mimicking the stratified ocean environment, and against previous experimental study of wakes subjected to a density stratification. The turbulence models are found to reproduce a number of important behaviors which differentiate stratified wakes from those in a homogeneous environment, including the appropriate decay rates in turbulence quantities, buoyant sup
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Alam, Boulos. "Modélisation numérique de la turbulence et de la dispersion atmosphérique par faibles vents en milieu urbain." Electronic Thesis or Diss., université Paris-Saclay, 2023. https://www.biblio.univ-evry.fr/theses/2023/interne/2023UPAST179.pdf.

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Cette thèse se situe dans le contexte de la modélisation de la dispersion atmosphérique, en particulier en présence de vents faibles. Les sources de pollution atmosphérique, souvent situées près du sol et influencées par des obstacles complexes, engendrent des concentrations élevées de polluants à proximité, ce qui se traduit par des fluctuations significatives de ces concentrations. Les vents faibles, généralement associés à des conditions atmosphériques stables, posent un défi particulier en matière de modélisation de la dispersion des polluants, nécessitant une analyse approfondie des donné
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Bose, Jyoti Sankar. "Modeling turbulence anisotropy using algebraic Reynolds stress models." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq22277.pdf.

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Campana, Lorenzo. "Modélisation stochastique de particules non sphériques en turbulence." Thesis, Université Côte d'Azur, 2022. http://www.theses.fr/2022COAZ4019.

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Le mouvement de petites particules non-sphériques en suspension dans un écoulement turbulent a lieu dans une grande variété d’applications naturelles et industrielles. Par exemple, ces phénomènes impactent la dynamique des aérosols dans l’atmosphère et dans les voies respiratoires, le mouvement des globules rouges dans le sang, la dynamique du plancton dans l’océan, la glace dans les nuages ou bien la combustion. Les particules anisotropes réagissent aux écoulements turbulents de manière complexe. Leur dynamique dépend ainsi d’un large éventail de para- mètres (forme, inertie, cisaillement du
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Terentiev, Leonid. "The turbulence closure model based on linear anisotropy invariant analysis." [S.l.] : [s.n.], 2006. http://deposit.ddb.de/cgi-bin/dokserv?idn=979794781.

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Lamriben, Cyril. "Transferts anisotropes d'énergie en turbulence en rotation et excitation de modes d'inertie." Phd thesis, Université Paris Sud - Paris XI, 2012. http://tel.archives-ouvertes.fr/tel-00734192.

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Nous présentons une étude expérimentale de l'influence d'une rotation d'ensemble sur le déclin d'un écoulement turbulent dans une géométrie confinée. L'écoulement est généré en translatant rapidement une grille dans un récipient parallélépipédique, et nous mesurons les champs de vitesse dans un plan vertical (parallèle à l'axe de rotation) grâce à un dispositif de PIV embarqué. Nous montrons dans un premier temps qu'une partie significative de l'énergie est contenue dans un écoulement moyen reproductible, qui s'identifie à une superposition de modes d'inertie résonnants de la cuve. Le couplage
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Jeong, Eun-Hwan. "Selected problems in turbulence theory and modeling." Diss., Texas A&M University, 2003. http://hdl.handle.net/1969.1/523.

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Three different topics of turbulence research that cover modeling, theory and model computation categories are selected and studied in depth. In the first topic, "velocity gradient dynamics in turbulence" (modeling), the Lagrangian linear diffusion model that accounts for the viscous-effect is proposed to make the existing restricted-Euler velocity gradient dynamics model quantitatively useful. Results show good agreement with DNS data. In the second topic, "pressure-strain correlation in homogeneous anisotropic turbulence subject to rapid strain-dominated distortion" (theory), extensive rapid
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Hamilton, Nicholas Michael. "Anisotropy of the Reynolds Stress Tensor in the Wakes of Counter-Rotating Wind Turbine Arrays." PDXScholar, 2014. https://pdxscholar.library.pdx.edu/open_access_etds/1848.

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A wind turbine array was constructed in the wind tunnel at Portland State University in a standard Cartesian arrangement. Configurations of the turbine array were tested with rotor blades set to rotate in either a clockwise or counter-clockwise sense. Measurements of velocity were made with stereo particle-image velocimetry. Mean statistics of velocities and Reynolds stresses clearly show the effect of direction of rotation of rotor blades for both entrance and exit row turbines. Rotational sense of the turbine blades is visible in the mean spanwise velocity W and the Reynolds shear stress -[m
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Rasam, Amin. "Anisotropy-resolving subgrid-scale modelling using explicit algebraic closures for large eddy simulation." Doctoral thesis, KTH, Turbulens, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-142401.

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The present thesis deals with the development and performance analysis ofanisotropy-resolving models for the small, unresolved scales (”sub-grid scales”,SGS) in large eddy simulation (LES). The models are characterised by a descriptionof anisotropy by use of explicit algebraic models for both the subgridscale(SGS) stress tensor (EASSM) and SGS scalar flux vector (EASSFM). Extensiveanalysis of the performance of the explicit algebraic SGS stress model(EASSM) has been performed and comparisons made with the conventionalisotropic dynamic eddy viscosity model (DEVM). The studies include LES ofplan
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Hamilton, Nicholas Michael. "Wake Character in the Wind Turbine Array: (Dis-)Organization, Spatial and Dynamic Evolution and Low-dimensional Modeling." PDXScholar, 2016. http://pdxscholar.library.pdx.edu/open_access_etds/3084.

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To maximize the effectiveness of the rapidly increasing capacity of installed wind energy resources, new models must be developed that are capable of more nuanced control of each wind turbine so that each device is more responsive to inflow events. Models used to plan wind turbine arrays and control behavior of devices within the farm currently make questionable estimates of the incoming atmospheric flow and update turbine configurations infrequently. As a result, wind turbines often operate at diminished capacities, especially in arrays where wind turbine wakes interact and inflow conditions
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Books on the topic "Anisotropic turbulence models"

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L, Machiels, Gatski T. B, and Langley Research Center, eds. Predicting nonInertial effects with algebraic stress models which account for dissipation rate anisotropies. National Aeronautics and Space Administration, Langley Research Center, 1997.

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L, Machiels, Gatski T. B, and Langley Research Center, eds. Predicting nonInertial effects with algebraic stress models which account for dissipation rate anisotropies. National Aeronautics and Space Administration, Langley Research Center, 1997.

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Trevino, G. Structure of wind-shear turbulence. Langley Research Center, 1989.

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R, Laituri Tony, and United States. National Aeronautics and Space Administration., eds. Structure of wind-shear turbulence. [National Aeronautics and Space Administration, 1988.

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R, Laituri Tony, and United States. National Aeronautics and Space Administration. Scientific and Technical Information Division., eds. Structure of wind-shear turbulence. National Aeronautics and Space Administration, Scientific and Technical Information Division, 1989.

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R, Laituri Tony, and United States. National Aeronautics and Space Administration. Scientific and Technical Information Division., eds. Structure of wind-shear turbulence. National Aeronautics and Space Administration, Scientific and Technical Information Division, 1989.

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R, Laituri Tony, and United States. National Aeronautics and Space Administration., eds. Structure of wind-shear turbulence. [National Aeronautics and Space Administration, 1988.

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Chu, Chiang. Calculations of diffuser flows with an anisotropic K-[epsilon] model. National Aeronautics and Space Administration, 1995.

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Zhu, Jiang. Calculations of diffuser flows with an anisotropic K-[epsilon] model. National Aeronautics and Space Administration, 1995.

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Anisotropic Turbulence Models for Acoustic Propagation Through the Neutral Atmospheric Surface Layer. Storming Media, 1998.

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Book chapters on the topic "Anisotropic turbulence models"

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Hallbäck, M., J. Groth, and A. V. Johansson. "Anisotropic Dissipation Rate — Implications for Reynolds Stress Models." In Advances in Turbulence 3. Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-84399-0_45.

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Aupoix, B. "Subgrid Scale Models for Homogeneous Anisotropic Turbulence." In Direct and Large Eddy Simulation of Turbulence. Vieweg+Teubner Verlag, 1986. http://dx.doi.org/10.1007/978-3-663-00197-3_3.

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Deville, Michel O. "Turbulence." In An Introduction to the Mechanics of Incompressible Fluids. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-04683-4_9.

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AbstractThe Reynolds decomposition and statistical averaging of velocity and pressure generate the Reynolds averaged Navier–Stokes (RANS) equations. The closure problem is solved by the introduction of a turbulence constitutive equation. Several linear turbulence models are presented in the RANS framework: $$K-\varepsilon , K-\omega $$ K - ε , K - ω . The solution of the RANS equations for the turbulent channel flow is elaborated giving the celebrated logarithmic profile. Non-linear models are built on the anisotropy tensor and the incorporation of the concept of integrity bases. The chapter e
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Seehausen, Hendrik, and Joerg R. Seume. "Influence of Complex Surface Structures on the Aerodynamic Loss Behaviour of Blades." In Regeneration of Complex Capital Goods. Springer International Publishing, 2024. http://dx.doi.org/10.1007/978-3-031-51395-4_9.

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AbstractOperating airfoils under mechanical stress in combination with oxidation and corrosion, abrasion wear, and subsequent regeneration results in complex surface structures that influence the performance of aircraft engines. For predicting this impact on performance the authors propose a reduced order model capable of assessing the effect of surface roughness as a basis for making decisions before or during the regeneration process. The accuracy of this model is increased by using improved roughness sensitive transition and turbulence models created for Reynolds-Averaged Navier–Stokes simu
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Godeferd, Fabien S., Alexandre Delache, and Claude Cambon. "Toroidal/Poloidal Modes Dynamics in Anisotropic Turbulence." In Notes on Numerical Fluid Mechanics and Multidisciplinary Design. Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-14139-3_18.

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Könözsy, László. "The Anisotropic Hybrid k-$$\omega $$ SST/Stochastic Turbulence Model." In A New Hypothesis on the Anisotropic Reynolds Stress Tensor for Turbulent Flows. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-60603-9_2.

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Godeferd, Fabien, Lukas Liechtenstein, Claude Cambon, Julian Scott, and Benjamin Favier. "A Model for the Far-Field Anisotropic Acoustic Emission of Rotating Turbulence." In IUTAM Symposium on Computational Physics and New Perspectives in Turbulence. Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-6472-2_46.

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Könözsy, László. "The k- $$\omega $$ ω Shear-Stress Transport (SST) Turbulence Model." In A New Hypothesis on the Anisotropic Reynolds Stress Tensor for Turbulent Flows. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-13543-0_3.

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Könözsy, László. "Implementation of the Anisotropic Hybrid k-$$\omega$$ SST/STM Closure Model." In A New Hypothesis on the Anisotropic Reynolds Stress Tensor for Turbulent Flows. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-60603-9_3.

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Erbig, Lars, and Sylvain Lardeau. "Hybrid RANS/LES of an Adverse Pressure Gradient Turbulent Boundary Layer Using an Elliptic Blending Reynolds Stress Model and Anisotropic Linear Forcing." In Progress in Hybrid RANS-LES Modelling. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-27607-2_5.

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Conference papers on the topic "Anisotropic turbulence models"

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Li, Xueying, Jing Ren, and Hongde Jiang. "Film Cooling Modeling of Turbine Blades Using Algebraic Anisotropic Turbulence Models." In ASME Turbo Expo 2014: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/gt2014-25191.

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The complex structures in the flow field of gas turbine film cooling increase the anisotropy of turbulence making it difficult to accurately compute turbulent eddy viscosity and scalar diffusivity. An algebraic anisotropic turbulence model is developed while aiming at a more accurate modeling of the Reynolds stress and turbulent scalar flux. In this study the algebraic anisotropic model is validated by two in-house experiments. One is a leading edge with showerhead film cooling and the other is a vane with full coverage film cooling. Adiabatic film cooling effectiveness under different blowing
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Casartelli, Ernesto, Luca Mangani, David Roos, and Armando Del Rio. "On the Application of the Full Reynolds Stress Model for Unsteady CFD in Hydraulic Turbomachines." In ASME 2020 Fluids Engineering Division Summer Meeting collocated with the ASME 2020 Heat Transfer Summer Conference and the ASME 2020 18th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/fedsm2020-20398.

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Abstract The computation of the characteristic of hydraulic machines, both in pump and turbine mode, needs, when performed over a wide operating range, to take into account turbulence anisotropy. This because highly separated flows largely deviate from isotropic turbulence structures as assumed in RANS eddy viscosity models with the Boussinesq approximation. In this paper CFD computations were performed with anisotropic turbulence models in order to capture the characteristic and investigate flow structures phenomena. Experimental results are compared against the CFD simulations in order to va
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Li, Xueying, Jing Ren, and Hongde Jiang. "Full Field Algebraic Anisotropic Eddy Viscosity Model for the Film Cooling Flows." In ASME Turbo Expo 2012: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/gt2012-68667.

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The algebraic anisotropic eddy viscosity model proposed by the authors is further developed to make it suitable to the full flow field in order to focus not only in the near wall region but also in the main flow field. The three anisotropic eddy viscosity ratios for u′v′, u′w′, v′w′ are determined from the eddy viscosity hypothesis and algebraic Reynolds stress transport equations and expressed in Cartesian coordinate system. This model is applied to four isotropic two-equation turbulence models to make them anisotropic. These anisotropic models are validated with the experiment data from Sinh
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Zhou, Prof Lixing, Yu Y., Cai F. P., and Zeng Zh. X. "Anisotropic Two-Phase Turbulence Models for Two-Fluid Modeling of Turbulent Dense Gas-Particle Flows." In 5th Asian Particle Technology Symposium. Research Publishing Services, 2012. http://dx.doi.org/10.3850/978-981-07-2518-1_086.

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Zaichik, Leonid I., V. M. Alipchenkov, and A. R. Avetissian. "Transport and Algebraic Models of Particle Kinetic Stresses and Heat Fluxes in Anisotropic Turbulent Flows." In Turbulence, Heat and Mass Transfer 5. Proceedings of the International Symposium on Turbulence, Heat and Mass Transfer. Begellhouse, 2006. http://dx.doi.org/10.1615/ichmt.2006.turbulheatmasstransf.1520.

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MacIsaac, G. D., and S. A. Sjolander. "Anisotropic Eddy Viscosity in the Secondary Flow of a Low-Speed Linear Turbine Cascade." In ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/gt2011-45578.

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The final losses within a turbulent flow are realized when eddies completely dissipate to internal energy through viscous interactions. The accurate prediction of the turbulence dissipation, and therefore the losses, requires turbulence models which represent, as accurately as possible, the true flow physics. Eddy viscosity turbulence models, commonly used for design level computations, are based on the Boussinesq approximation and inherently assume the eddy viscosity field is isotropic. The current paper compares the computational predictions of the flow downstream of a low-speed linear turbi
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MacDonald, James R., and Claudia M. Fajardo. "Turbulence Anisotropy Investigations in an Internal Combustion Engine." In ASME 2020 Internal Combustion Engine Division Fall Technical Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/icef2020-3029.

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Abstract The assumption of isotropic turbulence is commonly incorporated into models of internal combustion engine (ICE) in-cylinder flows. While preliminary analysis with two-dimensional velocity data indicates that the turbulence may tend to isotropy as the piston approaches TDC, the validity of this assumption has not been fully investigated, partially due to lack of three-component velocity data in ICEs. In this work, the velocity was measured using two-dimensional, three-component (2D-3C) particle image velocimetry in a single-cylinder, motored, research engine to investigate the evolutio
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Xi, Jinxiang, and P. Worth Longest. "Effects of Improved Near-Wall Modeling on Micro-Particle Deposition in Oral Airway Geometries." In ASME 2007 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2007. http://dx.doi.org/10.1115/sbc2007-176227.

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Direct Lagrangian particle tracking provides an effective method for simulating micro-aerosol deposition in the upper respiratory airways. However, Xi and Longest [1] have shown that errors occurred in the predicted deposition rates of smaller particles in comparison to measurements. Matida et al. [2] attributed a similar discrepancy to the assumption of isotropic turbulent fluctuations near the wall. Matida et al. [2] implemented a near-wall anisotropic turbulence model and reported significantly improved agreement with experimental data. Longest and Xi [3] investigated nanoparticle depositio
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Antonello, Marco, Massimo Masi, and Giampaolo Navarro. "An anisotropic modification of the Reynolds stresses for algebraic models of turbulence." In 15th AIAA Computational Fluid Dynamics Conference. American Institute of Aeronautics and Astronautics, 2001. http://dx.doi.org/10.2514/6.2001-2840.

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Li, Xueying, Jing Ren, and Hongde Jiang. "On the Reliability of RANS Turbulence Models for Endwall Cooling Prediction." In ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/gt2017-65207.

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The large scale coherent structures in the flow field of film cooling makes it difficult for the modeling of film cooling flow and heat transfer. The interaction between the complex secondary flows near the endwall and the film cooling jets makes it even worse. A typical flat vane endwall with/without film cooling is investigated experimentally and numerically. The aerodynamic and heat transfer of the endwall is measured. Adiabatic film cooling effectiveness is measured using PSP technique and conjugate overall cooling effectiveness is measured by TSP technique for different conditions. The co
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Reports on the topic "Anisotropic turbulence models"

1

Wilson, David K. Anisotropic Turbulence Models for Acoustic Propagation Through the Neutral Atmospheric Surface Layer. Defense Technical Information Center, 1998. http://dx.doi.org/10.21236/ada339329.

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2

Hart, Carl, and Gregory Lyons. A tutorial on the rapid distortion theory model for unidirectional, plane shearing of homogeneous turbulence. Engineer Research and Development Center (U.S.), 2022. http://dx.doi.org/10.21079/11681/44766.

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Abstract:
The theory of near-surface atmospheric wind noise is largely predicated on assuming turbulence is homogeneous and isotropic. For high turbulent wavenumbers, this is a fairly reasonable approximation, though it can introduce non-negligible errors in shear flows. Recent near-surface measurements of atmospheric turbulence suggest that anisotropic turbulence can be adequately modeled by rapid-distortion theory (RDT), which can serve as a natural extension of wind noise theory. Here, a solution for the RDT equations of unidirectional plane shearing of homogeneous turbulence is reproduced. It is ass
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3

Galperin, Boris. Modeling the Effects of Anisotropic Turbulence and Dispersive Waves on Oceanic Circulation and their Incorporation in Navy Ocean Models. Defense Technical Information Center, 2010. http://dx.doi.org/10.21236/ada542675.

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