Relevant bibliographies by topics / K-epsilon turbulence modeling

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'K-epsilon turbulence modeling'

Author: Grafiati
Published: 4 June 2021
Last updated: 6 February 2022

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Journal articles on the topic "K-epsilon turbulence modeling"

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Mansour, N. N., J. Kim, and P. Moin. "Near-wall k-epsilon turbulence modeling." AIAA Journal 27, no. 8 (1989): 1068–73. http://dx.doi.org/10.2514/3.10222.

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YAMAKAWA, Masanori, and Shinichi INAGE. "Modeling of k-.EPSILON. Turbulence Model by Statistical Turbulence Theory and its Applications." Transactions of the Japan Society of Mechanical Engineers Series B 57, no. 544 (1991): 4072–79. http://dx.doi.org/10.1299/kikaib.57.4072.

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LEE, Young Jae, and Yoshiaki ONUMA. "Modeling of turbulent jet diffusion flames. 1st Report, modification of k-.EPSILON. turbulence model with isothermal hot air jets." Transactions of the Japan Society of Mechanical Engineers Series B 56, no. 532 (1990): 3921–27. http://dx.doi.org/10.1299/kikaib.56.3921.

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Menni, Younes, Ahmed Azzi, and A. Chamkha. "Modeling and analysis of solar air channels with attachments of different shapes." International Journal of Numerical Methods for Heat & Fluid Flow 29, no. 5 (2019): 1815–45. http://dx.doi.org/10.1108/hff-08-2018-0435.

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Purpose This paper aims to report the results of numerical analysis of turbulent fluid flow and forced-convection heat transfer in solar air channels with baffle-type attachments of various shapes. The effect of reconfiguring baffle geometry on the local and average heat transfer coefficients and pressure drop measurements in the whole domain investigated at constant surface temperature condition along the top and bottom channels’ walls is studied by comparing 15 forms of the baffle, which are simple (flat rectangular), triangular, trapezoidal, cascaded rectangular-triangular, diamond, arc, co
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Korpus, R. A., and J. M. Falzarano. "Prediction of Viscous Ship Roll Damping by Unsteady Navier-Stokes Techniques." Journal of Offshore Mechanics and Arctic Engineering 119, no. 2 (1997): 108–13. http://dx.doi.org/10.1115/1.2829050.

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This paper describes a numerical technique for analyzing the viscous unsteady flow around oscillating ship hulls. The technique is based on a general Reynolds-averaged Navier-Stokes (RANS) capability, and is intended to generate viscous roll moment data for the incorporation of real-flow effects into potential flow ship motions programs. The approach utilizes the finite analytic technique for discretizing the unsteady RANS equations, and a variety of advanced turbulence models for closure. The calculations presented herein focus on viscous and vortical effects without free-surface, and utilize
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Han, Fenglei, Jingzheng Yao, Chunhui Wang, and Haitao Zhu. "Bow Flare Water Entry Impact Prediction and Simulation Based on Moving Particle Semi-Implicit Turbulence Method." Shock and Vibration 2018 (2018): 1–16. http://dx.doi.org/10.1155/2018/7890892.

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Prandtl’s mixing length method and the k-epsilon method are introduced into the Moving Particle Semi-Implicit (MPS) method for the purpose of modeling turbulence effects associated with water entries of two-dimensional (2D) bow flare section. The presented numerical method is validated by comparing its numerical prediction with experimental data and other numerical results obtained from the Boundary Element Method (BEM). The time histories of the pressure and the vertical slamming force acting on the dropping ship section subjected to various conditions with different dropping velocity and inc
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López, Juan A., Marco A. Ramírez-Argáez, Adrián M. Amaro-Villeda, and Carlos González. "Mathematical and Physical Modeling of Three-Phase Gas-Stirred Ladles." MRS Proceedings 1812 (2016): 29–34. http://dx.doi.org/10.1557/opl.2016.14.

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ABSTRACTA very realistic 1:17 scale physical model of a 140-ton gas-stirred industrial steel ladle was used to evaluate flow patterns measured by Particle Image Velocimetry (PIV), considering a three-phase system (air-water-oil) to simulate the argon-steel-slag system and to quantify the effect of the slag layer on the flow patterns. The flow patterns were evaluated for a single injector located at the center of the ladle bottom with a gas flow rate of 2.85 l/min, with the presence of a slag phase with a thickness of 0.0066 m. The experimental results obtained in this work are in excellent agr
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Guevara-Luna, Marco Andrés, and Luis Carlos Belalcázar-Cerón. "NGL supersonic separator: modeling, improvement, and validation and adjustment of k-epsilon RNG modified for swirl flow turbulence model." Revista Facultad de Ingeniería Universidad de Antioquia, no. 82 (March 2017): 82–93. http://dx.doi.org/10.17533/udea.redin.n82a11.

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Sedej, Owen, and Eric Mbonimpa. "CFD Modeling of a Lab-Scale Microwave Plasma Reactor for Waste-to-Energy Applications: A Review." Gases 1, no. 3 (2021): 133–47. http://dx.doi.org/10.3390/gases1030011.

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Rapidly increasing solid waste generation and energy demand are two critical issues of the current century. Plasma gasification, a type of waste-to-energy (WtE) technology, has the potential to produce clean energy from waste and safely destroy hazardous waste. Among plasma gasification technologies, microwave (MW)-driven plasma offers numerous potential advantages to be scaled as a leading WtE technology if its processes are well understood and optimized. This paper reviews studies on modeling experimental microwave-induced plasma gasification systems. The system characterization requires dev
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Alvarado, Yolitzin, Rosenberg Romero, Juan Carlos García, Adrian del Pozo, Roberto Zenit, and Sergio Alonso Serna. "Using CFD and PIV to investigate rotating cage-related hydrodynamics for CO2 corrosion studies analyzing 2-, 4- and 8-coupons setups." Anti-Corrosion Methods and Materials 66, no. 6 (2019): 802–11. http://dx.doi.org/10.1108/acmm-09-2017-1836.

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Purpose The purpose of this study is to evaluate the corrosion in CO2 using Rotating cage (RC) and Computational fluid dynamics (CFD) software. RC experiments were carried out in a CO2 environment, to evaluate corrosion in a C-Mn Steel. CFD software was used to simulate RC flow conditions during the corrosion process, to evaluate wall shear stress. Design/methodology/approach The RC is used as a laboratory tool for studies of accelerated corrosion, according to standard ASTM G184-06. Steel corrosion was studied by means of the RC methodology. The hydrodynamics are solved numerically using CFD.
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Dissertations / Theses on the topic "K-epsilon turbulence modeling"

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Cahen, Juliette. "Modélisation de la turbulence pour la prédiction d'écoulements internes compressibles. Validation d'un modèle (k,epsilon) en configuration tridimensionnelle d'interaction onde de choc-couche limite turbulente." Rouen, 1993. http://www.theses.fr/1993ROUES022.

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Ce mémoire relate un travail consacré à la modélisation de la turbulence, étudiée dans le cadre particulier de la simulation d'interactions onde de choc-couche limite turbulente. Dans une première partie, une revue des différents types de modèles est effectuée selon une hiérarchie allant des modèles les plus simples, basés sur la détermination d'une longueur de mélange, à des modèles plus complexes prenant en compte les caractères anisotrope et tridimensionnel de la turbulence. La seconde partie de ce mémoire est consacrée à la mise en œuvre et à la validation d'un modèle de turbulence à deux
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Brandi, Analice Costacurta. "Estratégias "upwind" e modelagem k-epsilon para simulação numérica de escoamentos com superfícies livres em altos números de Reynolds." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/55/55134/tde-01122005-170110/.

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Este trabalho é dedicado à análise e implementação de esquemas "upwind" de alta ordem modernos e o modelo de turbulência k-epsilon padrão no Freeflow-2D; um ambiente integrado para simulação numérica em diferenças finitas de problemas de escoamentos incompressíveis com superfícies livres. O propósito do estudo é a simulação de escoamentos de fluidos newtonianos incompressíveis, bidimensionais, confinados e/ou com superfícies livres e a altos valores do número de Reynolds. O desempenho do código Freeflow-2D atual é avaliada na simulação do escoamento numa expansão brusca e de um jato livre inci
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vermorel, olivier. "Etude numérique et modélisation de la modulation de la turbulence dans un écoulement de nappe chargée en particules." Phd thesis, Institut National Polytechnique de Toulouse - INPT, 2003. http://tel.archives-ouvertes.fr/tel-00007407.

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Ce travail de thèse est consacré à l'étude numérique et théorique de la modulation de la turbulence par des particules. Cette étude s'appuie sur des résultats issus de simulations de type Euler/Lagrange qui résolvent directement les équations instantanées de la phase gazeuse et effectuent un suivi de trajectoires des particules. La configuration étudiée représente une nappe de particules injectées à haute vitesse dans une turbulence homogène isotrope décroissante. Le mouvement des particules est supposé uniquement gouverné par la force de traînée visqueuse. Le chargement en particules est suff
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Baschetti, Serafina. "A new modelling of the cross-field transport in diverted edge plasma : application to 2D transport simulations with SolEdge2D-EIRENE." Electronic Thesis or Diss., Ecole centrale de Marseille, 2019. http://www.theses.fr/2019ECDM0009.

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Le fonctionnement à l'équilibre du réacteur à fusion de prochaine génération, ITER, nécessitera le développement d'outils numériques fiables permettant d'estimer les paramètres d'ingénierie clés à un coût de calcul raisonnable. Les codes de transport répondent à cette exigence car ils reposent sur des équations fluides bidimensionnelles qui sont moyennées sur les fluctuations temporelles, de la même manière que les modèles « Reynolds Averaged Navier-Stokes » couramment utilisés dans la communauté des fluides neutres. De plus, les codes de transport peuvent rassembler la plupart des ingrédients
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Hu, Chih-Chieh. "Mechanistic modeling of evaporating thin liquid film instability on a bwr fuel rod with parallel and cross vapor flow." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/28148.

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Thesis (M. S.)--Mechanical Engineering, Georgia Institute of Technology, 2009.<br>Committee Chair: Abdel-Khalik, Said; Committee Member: Ammar, Mostafa H.; Committee Member: Ghiaasiaan, S. Mostafa; Committee Member: Hertel, Nolan E.; Committee Member: Liu, Yingjie.
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Grasreiner, Sebastian. "Combustion modeling for virtual SI engine calibration with the help of 0D/3D methods." Doctoral thesis, Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2012. http://nbn-resolving.de/urn:nbn:de:bsz:105-qucosa-90518.

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Spark ignited engines are still important for conventional as well as for hybrid power trains and are thus objective to optimization. Today a lot of functionalities arise from software solutions, which have to be calibrated. Modern engine technologies provide an extensive variability considering their valve train, fuel injection and load control. Thus, calibration efforts are really high and shall be reduced by introduction of virtual methods. In this work a physical 0D combustion model is set up, which can cope with a new generation of spark ignition engines. Therefore, at first cylinder ther
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Books on the topic "K-epsilon turbulence modeling"

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Kwon, Okey. Advanced k-epsilon modeling of heat transfer. National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Program, 1995.

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Kwon, Okey. Advanced k-epsilon modeling of heat transfer. Lewis Research Center, 1995.

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1943-, Kim J., Moin Parviz, and Ames Research Center, eds. Near-wall k-[epsilon] turbulence modeling. National Aeronautics and Space Administration, Ames Research Center, 1987.

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1943-, Kim J., Moin Parviz, and Ames Research Center, eds. Near-wall k-[epsilon] turbulence modeling. National Aeronautics and Space Administration, Ames Research Center, 1987.

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1940-, Shih Tsan-Hsing, and Lewis Research Center. Institute for Computational Mechanics in Propulsion., eds. A k-[epsilson] modeling of near wall turbulence. NASA Lewis Research Center, Institute for Computational Mechanics in Propulsion, 1991.

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1940-, Shih Tsan-Hsing, and Lewis Research Center. Institute for Computational Mechanics in Propulsion, eds. A k-[epsilson] modeling of near wall turbulence. NASA Lewis Research Center, Institute for Computational Mechanics in Propulsion, 1991.

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A k-[epsilson] modeling of near wall turbulence. NASA Lewis Research Center, Institute for Computational Mechanics in Propulsion, 1991.

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1940-, Shih Tsan-Hsing, and Lewis Research Center. Institute for Computational Mechanics in Propulsion., eds. A k-[epsilson] modeling of near wall turbulence. NASA Lewis Research Center, Institute for Computational Mechanics in Propulsion, 1991.

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Turbulence modeling validation, testing, and development. National Aeronautics and Space Administration, Ames Research Center, 1997.

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1940-, Shih Tsan-Hsing, and United States. National Aeronautics and Space Administration., eds. Low Reynolds number two-equation modeling of turbulent flows. NASA, 1991.

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Book chapters on the topic "K-epsilon turbulence modeling"

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Sethuramalingam, Ramamoorthy, and Abhishek Asthana. "Design Improvement of Water-Cooled Data Centres Using Computational Fluid Dynamics." In Springer Proceedings in Energy. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-63916-7_14.

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AbstractData centres are complex energy demanding environments. The number of data centres and thereby their energy consumption around the world is growing at a rapid rate. Cooling the servers in the form of air conditioning forms a major part of the total energy consumption in data centres and thus there is an urgent need to develop alternative energy efficient cooling technologies. Liquid cooling systems are one such solution which are in their early developmental stage. In this article, the use of Computational Fluid Dynamics (CFD) to further improve the design of liquid-cooled systems is discussed by predicting temperature distribution and heat exchanger performance. A typical 40 kW rack cabinet with rear door fans and an intermediate air–liquid heat exchanger is used in the CFD simulations. Steady state Reynolds-Averaged Navier–Stokes modelling approach with the RNG K-epsilon turbulence model and the Radiator boundary conditions were used in the simulations. Results predict that heat exchanger effectiveness and uniform airflow across the cabinet are key factors to achieve efficient cooling and to avoid hot spots. The fundamental advantages and limitations of CFD modelling in liquid-cooled data centre racks were also discussed. In additional, emerging technologies for data centre cooling have also been discussed.
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Caillet, Hélène, Alain Bastide, and Laetitia Adelard. "CFD Simulations in Mechanically Stirred Tank and Flow Field Analysis: Application to the Wastewater (Sugarcane Vinasse) Anaerobic Digestion." In Wastewater Treatment [Working Title]. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.93926.

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Anaerobic digestion is a widely used process for waste treatment and energy production. This natural process takes place in a controlled environment, anaerobic digesters. Mixing is one of the main operating parameters. The understanding of the flows during the agitation of the medium is crucial for the optimization of the process yield. In fact, the mass and heat transfers are enhanced by the agitation. However, the complex biochemical reactions can be inhibited with overly vigorous agitation. A detailed and in-depth understanding of the phenomena occurring during agitation requires modeling studies. In this chapter, we propose a general approach, based on computational fluid mechanics (CFD), to analyze the mechanical mixing of an anaerobic reactor. We apply this work to the anaerobic digestion of the sugarcane vinasse, which is a liquid waste generated during the production of alcohol. The single-phase Reynolds-averaged Navier-Stokes (RANS) simulations of mechanical agitation of Newtonian fluids for different rotational speeds are presented. The equations system is closed with the standard k-epsilon turbulence model. The flow field is analyzed with the velocity profiles, the Q and Lambda2 fields, the pressure and the vorticity.
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Conference papers on the topic "K-epsilon turbulence modeling"

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Lee, J. "Modeling boundary layer flows over rough surfaces using a modified Chien k-epsilon turbulence model." In 34th Aerospace Sciences Meeting and Exhibit. American Institute of Aeronautics and Astronautics, 1996. http://dx.doi.org/10.2514/6.1996-384.

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Gallegos-Mun˜oz, Armando, Armando Balderas-Bernal, Alejandro Rami´rez-Barro´n, and J. C. Prince-Avelino. "Study of the Gas Combustion LP in an Atmospheric Burner." In ASME 2008 Heat Transfer Summer Conference collocated with the Fluids Engineering, Energy Sustainability, and 3rd Energy Nanotechnology Conferences. ASMEDC, 2008. http://dx.doi.org/10.1115/ht2008-56184.

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The study of the gas combustion LP in an atmospheric burner to bake ceramics is presented. The study includes different models from combustion and turbulence to find the best interaction chemistry-turbulence, applying Computational Fluids Dynamics (CFD) through FLUENT®. For the study different models of combustion were considered, where the finite speed of the reaction is important by means of kinetic chemistry from Arrhenius. The different models of combustion were; a generalized model of speed of Finite Rate/Eddy dissipation, non-premixed combustion Laminar Flamelet and Eddy dissipation. Eac
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Melheim, Jens A., Stefan Horender, and Martin Sommerfeld. "Modeling of the Vortex-Structure in a Particle-Laden Mixing-Layer." In ASME 2005 Fluids Engineering Division Summer Meeting. ASMEDC, 2005. http://dx.doi.org/10.1115/fedsm2005-77040.

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Numerical calculations of a particle-laden turbulent horizontal mixing-layer based on the Eulerian-Lagrangian approach are presented. Emphasis is given to the determination of the stochastic fluctuating fluid velocity seen by the particles in anisotropic turbulence. The stochastic process for the fluctuating velocity is a “Particle Langevin equation Model”, based on the Simplified Langevin Model. The Reynolds averaged Navier-Stokes equations are closed by the standard k-epsilon turbulence model. The calculated concentration profile and the mean, the root-mean-square (rms) and the cross-correla
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Osawa, Naoki, Yoshinobu Yamamoto, and Tomoaki Kunugi. "Investigation of MHD RANS Modeling Base on DNS Database Under the Advanced Blanket Design Conditions Utilized Molten Salt." In 2014 22nd International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/icone22-30653.

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In this study, validations of Reynolds Averaged Navier-Stokes Simulation (RANS) based on Kenjeres &amp; Hanjalic MHD turbulence model (Int. J. Heat &amp; Fluid Flow, 21, 2000) coupled with the low-Reynolds number k-epsilon model have been conducted with the usage of Direct Numerical Simulation (DNS) database. DNS database of turbulent channel flow imposed wall-normal magnetic field on, are established in condition of bulk Reynolds number 40000, Hartmann number 24, and Prandtl number 5. As the results, the Nagano &amp; Shimada model (Trans. JSME series B. 59, 1993) coupled with Kenjeres &amp; H
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Osawa, Naoki, Yoshinobu Yamamoto, and Tomoaki Kunugi. "Investigation of MHD RANS Modeling Base on DNS Database Under the Advanced Blanket Design Conditions Utilized Molten Salt." In 2014 22nd International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/icone22-30712.

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In this study, validations of Reynolds Averaged Navier-Stokes Simulation (RANS) based on Kenjeres &amp; Hanjalic MHD turbulence model (Int. J. Heat &amp; Fluid Flow, 21, 2000) coupled with the low-Reynolds number k-epsilon model have been conducted with the usage of Direct Numerical Simulation (DNS) database. DNS database of turbulent channel flow imposed wall-normal magnetic field on, are established in condition of bulk Reynolds number 40000, Hartmann number 24, and Prandtl number 5. As the results, the Nagano &amp; Shimada model (Trans. JSME series B. 59, 1993) coupled with Kenjeres &amp; H
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Kayne, Alexander, and Ramesh Agarwal. "Computational Fluid Dynamics Modeling of Mixed Convection Flows in Building Enclosures." In ASME 2013 7th International Conference on Energy Sustainability collocated with the ASME 2013 Heat Transfer Summer Conference and the ASME 2013 11th International Conference on Fuel Cell Science, Engineering and Technology. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/es2013-18026.

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In recent years Computational Fluid Dynamics (CFD) simulations are increasingly used to model the air circulation and temperature environment inside the rooms of residential and office buildings to gain insight into the relative energy consumptions of various HVAC systems for cooling/heating for climate control and thermal comfort. This requires accurate simulation of turbulent flow and heat transfer for various types of ventilation systems using the Reynolds-Averaged Navier-Stokes (RANS) equations of fluid dynamics. Large Eddy Simulation (LES) or Direct Numerical Simulation (DNS) of Navier-St
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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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Shi, Xuefeng, Wulang Chriswindarto, and David Boyce. "Application of CFD Modeling in HRSG Evase Design." In ASME 2009 Power Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/power2009-81156.

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Computational simulation of flow, heat transfer and combustion in a vertical tube heat recovery system generator (HRSG) with a single angel roof, a dual angle roof and an air flow optimized evase are studied. Existing theoretical models for flow and gas combustion [1] are used to predict how the three kinds of roof shapes influence the flue gas and temperature distribution in the whole HRSG System, and particularly the flue gas distribution upstream of first heat exchanger bundles (superheater 3 and reheater 2) and duct burner as well as the temperature distribution downstream of the duct burn
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Casartelli, Ernesto, Luca Mangani, David Roos, and Armando Del Rio. "Application of Advanced RANS Turbulence Models for the Prediction of Turbomachinery Flows." 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/fedsm2020-20420.

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Abstract The simulation models used in the design process of modern turbo-machines are becoming increasingly complex. Nevertheless, the steady-state RANS approach is still the mostly used method for CFD computations. However, detailed flow information is more and more required for further improving the performance and extend the operating range. Turbulence modeling has becoming therefore a key issue in this context. The increased computer power already available would enable the use of more sophisticated turbulence models than standard two equation ones, such as SST k-omega and k-epsilon. Thes
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Purimetla, Anil K., Jie Cui, Stephen Idem, and Sastry Munukutla. "CFD Studies on Burner Secondary Air Flow." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-61914.

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In many fossil power plants operating today, there is insufficient means to assure the proper balancing of the secondary airflows between the individual burners of wall-fired units in addition there is a problem of dust deposition on the floor. This mismatch leads to decreased boiler efficiency and increased emissions. In this study, a Computational Fluid Dynamics (CFD) modeling of a fossil power plant wind box scale model is performed using the commercial software CFX5.6. The model solves the three dimensional Reynolds averaged Navier-Stokes equations with the K-epsilon turbulence model. The
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