Thematische Bibliographien / SST k-ω turbulence model

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Auswahl der wissenschaftlichen Literatur zum Thema „SST k-ω turbulence model“

Autor: Grafiati

Veröffentlicht am 24. Juni 2021

Zuletzt aktualisiert am 1. Februar 2022

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Zeitschriftenartikel zum Thema "SST k-ω turbulence model"

Shen, De Zhang, He Zhang, and Hao Jie Li. "Comparison of Two Two-Equation Turbulence Model Used for the Numerical Simulation of Underwater Ammunition Fuze Turbine Flow Field." Advanced Materials Research 591-593 (November 2012): 1968–72. http://dx.doi.org/10.4028/www.scientific.net/amr.591-593.1968.

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To figure out the problem of turbulence simulation of underwater ammunition fuze turbine numerical simulation, respectively, realizable k-ε turbulence model and SST k-ω turbulence model are used for two-phase flow numerical simulation of the turbine rotation. The analysis compared the calculation results of the two turbulence models. The results showed that: the cavitation scale obtained from realizable k-ε turbulence model is shorter than that of SST k-ω turbulence model; turbine surface pressure distribution trends are similar of this two model, the results of realizable k-ε turbulence model

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Genç, M. S. "Numerical Simulation of Flow over a Thin Aerofoil at a High Reynolds Number Using a Transition Model." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 224, no. 10 (2010): 2155–64. http://dx.doi.org/10.1243/09544062jmes2121.

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In this study, a prediction of the transition and stall characteristics of an NACA64A006 thin-aerofoil was numerically simulated by FLUENT using k— kL—ω and k—ω shear-stress transport (SST) transition models, recently developed, and k—ω SST and k—ε turbulence models. Subsonic flow with free stream Mach number ( M∞) of 0.17 and the high Reynolds number ( Re) of 5.8×106 was considered at an angle of attack varying from 2° to 11°. However, the computed results were compared with the experiments of McCollough and Gault. Lift and pressure curves were accurately predicted using the k— kL—ω transitio

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Teodosiu, Cătălin, Viorel Ilie, and Raluca Teodosiu. "Appropriate CFD Turbulence Model for Improving Indoor Air Quality of Ventilated Spaces." Mathematical Modelling in Civil Engineering 10, no. 4 (2014): 28–42. http://dx.doi.org/10.2478/mmce-2014-0020.

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Abstract Accurate assessment of air-flow in ventilated spaces is of major importance for achieving healthy and comfortable indoor environment conditions. The CFD (Computational Fluid Dynamics) technique is nowadays one of the most used approaches in order to improve the indoor air quality in ventilated environments. Nevertheless, CFD has still two main challenges: turbulence modeling and experimental validation. As a result, the objective of this study is to evaluate the performance of different turbulence models potentially appropriate for the prediction of indoor airflow. Accordingly, result

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Barnes, Andrew, Daniel Marshall-Cross, and Ben Richard Hughes. "Validation and comparison of turbulence models for predicting wakes of vertical axis wind turbines." Journal of Ocean Engineering and Marine Energy 7, no. 4 (2021): 339–62. http://dx.doi.org/10.1007/s40722-021-00204-z.

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AbstractVertical axis wind turbine (VAWT) array design requires adequate modelling of the turbine wakes to model the flow throughout the array and, therefore, the power output of turbines in the array. This paper investigates how accurately different turbulence models using 2D computational fluid dynamics (CFD) simulations can estimate near and far wakes of VAWTs to determine an approach towards accurate modelling for array design. Three experiments from the literature are chosen as baselines for validation, with these experiments representing the near to far wake of the turbine. Five URANS tu

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Boertz, Hendrik, Albert Baars, Janusz T. Cieśliński, and Sławomir Smoleń. "Turbulence Model Evaluation for Numerical Modelling of Turbulent Flow and Heat Transfer of Nanofluids." Applied Mechanics and Materials 831 (April 2016): 165–80. http://dx.doi.org/10.4028/www.scientific.net/amm.831.165.

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In this work, Nusselt number and friction factor are calculated numerically for turbulent pipe flow (Reynolds number between 6000 and 12000) with constant heat flux boundary condition using nanofluids. The nanofluid is modelled with the single-phase approach and the simulation results are compared with experimental data. Ethylene glycol and water, 60:40 EG/W mass ratio, as base fluid and SiO2 nanoparticles are used as nanofluid with particle volume concentrations ranging from 0% to 10%. A prior turbulence model evaluation of k-ε-, k-ω- and k-ω-SST-model revealed substantial deviations between

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Matyushenko, A. A., та A. V. Garbaruk. "Non-linear correction for the k-ω SST turbulence model". Journal of Physics: Conference Series 929 (листопад 2017): 012102. http://dx.doi.org/10.1088/1742-6596/929/1/012102.

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Engdar, Ulf, Per Nilsson, and Jens Klingmann. "Investigation of Turbulence Models Applied to Premixed Combustion Using a Level-Set Flamelet Library Approach." Journal of Engineering for Gas Turbines and Power 126, no. 4 (2004): 701–7. http://dx.doi.org/10.1115/1.1771687.

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Most of the common modeling approaches to premixed combustion in engineering applications are either based on the assumption of infinitely fast chemistry or the flamelet assumption with simple chemistry. The level-set flamelet library approach (FLA) has shown great potential in predicting major species and heat release, as well as intermediate and minor species, where more simple models often fail. In this approach, the mean flame surface is tracked by a level-set equation. The flamelet libraries are generated by an external code, which employs a detailed chemical mechanism. However, a model f

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Deng, Yilin, Jian Feng, Fulai Wan, Xi Shen, and Bin Xu. "Evaluation of the Turbulence Model Influence on the Numerical Simulation of Cavitating Flow with Emphasis on Temperature Effect." Processes 8, no. 8 (2020): 997. http://dx.doi.org/10.3390/pr8080997.

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The aim of this paper is to investigate the influence of different turbulence models (k−ε, RNG k−ε, and SST k−ω) on the numerical simulation of cavitating flow in thermosensitive fluid. The filter-based model and density correction method were employed to correct the turbulent viscosity of the three turbulence models. Numerical results obtained were compared to experimental ones which were conducted on the NACA0015 hydrofoil at different temperatures. The applicability of the numerical solutions of different turbulence model was studied in detail. The modified RNG k−ε model has higher accuracy

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Povilaitis, Mantas, and Justina Jaseliūnaitė. "Simulation of Hydrogen-Air-Diluents Mixture Combustion in an Acceleration Tube with FlameFoam Solver." Energies 14, no. 17 (2021): 5504. http://dx.doi.org/10.3390/en14175504.

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During a severe accident in a nuclear power plant, hydrogen can be generated, leading to risks of possible deflagration and containment integrity failure. To manage severe accidents, great experimental, analytical, and benchmarking efforts are being made to understand combustible gas distribution, deflagration, and detonation processes. In one of the benchmarks—SARNET H2—flame acceleration due to obstacle-induced turbulence was investigated in the ENACCEF facility. The turbulent combustion problem is overly complex because it involves coupling between fluid dynamics, mass/heat transfer, and ch

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Amorim, Felipe Grossi L., Jean Helder M. Ribeiro, Marília Gabriela J. Vaz, and Ramon Molina Valle. "Sensitivity Analysis of the Air Flow inside a Single Cylinder Engine for Different Turbulence Models Using CFD." Advanced Materials Research 1016 (August 2014): 624–29. http://dx.doi.org/10.4028/www.scientific.net/amr.1016.624.

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Theincrease of greenhouse gases emissions makes necessary to improve the comprehension of the Internal Combustion Engines operation. One of the factors that affect the combustion in these engines is the turbulence, since it can raise the quality of the fuel-air mixture inside the combustion chamber. However, when modeling internal combustion engines using CFD, the turbulence model choice is always a relevant problem. The present paper analyzes the results for three different turbulence models (k-ε Realizable, RNG k-ε and Menter k-ω SST) ina single-cylinder engine geometry, comparing numerical

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Dissertationen zum Thema "SST k-ω turbulence model"

Zhao, Yuer. "A Numerical Study of Melt Pool Heat Transfer in the IVR of a PWR." Thesis, KTH, Fysik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-297867.

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This thesis aims to provide the thermal condition of melt pool convection by CFD simulation, which is important to the assessment of the invessel melt retention (IVR) strategy widely adopted in Generation III pressurized water reactors (PWRs). As a severe accident mitigation measure, the IVR strategy is realized through external cooling of the lower head of a reactor pressure vessel (RPV). To achieve the coolability and retention of the corium pool in the RPV lower head, the heat flux at the outer surface of the vessel should be less than the critical heat flux (CHF) of boiling around the lowe

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Yilmaz, Ali Emre. "Implementation Of Turbulence Models On 2d Hybrid Grids Using An Explicit/implicit Multigrid Algorithm." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613783/index.pdf.

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In this thesis study, implementation, numerical stability and convergence rate issues of turbulence modeling are explored. For this purpose, a one equation turbulence model, Spalart-Allmaras, and a two-equation turbulence model, SST k-w, are adapted to an explicit, cell centered, finite volume method based, structured / hybrid multi grid flow solver, SENSE2D, developed at TUBITAK-SAGE. Governing equations for both the flow and the turbulence are solved in a loosely coupled manner, however, each set of equations are solved using a coupled, semi-implicit solution algorithm. In multigrid solution

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Fernandes, Marcos Paulo Gomes. "CalibraÃÃo do Modelo de TurbulÃncia k-ω SST para Turbinas EÃlicas de Pequeno Porte AtravÃs de AvaliaÃÃo NumÃrica e Experimental." Universidade Federal do CearÃ, 2013. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=9378.

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CoordenaÃÃo de AperfeiÃoamento de Pessoal de NÃvel Superior<br>No presente trabalho foi realizada a investigaÃÃo numÃrica e experimental do desempenho aerodinÃmico de dois aerogeradores tripÃ de pequeno porte com 3 m de diÃmetro. Os perfis aerodinÃmicos utilizados, NACA 0012 (simÃtrico) e NACA 4412 (cambado), foram projetados para aplicaÃÃes em baixas velocidades, como Ã o caso de turbinas eÃlicas de eixo horizontal. Os aerogeradores foram construÃdos e testados no LaboratÃrio de Energia Solar e GÃs Natural - UFC. Isto permitiu a determinaÃÃo das curvas de desempenho dos mesmos, possibilitando

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Andersson, Harald. "Numerical and experimental study of confluent jets supply device with variable airflow." Licentiate thesis, Högskolan i Gävle, Energisystem och byggnadsteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-29271.

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In recent years, application of confluent jets for design of ventilation supply devices has been studied. Similarly, numerus studies have been made on the potential and application of variable air volume (VAV) in order to reduce the energy demand of ventilation systems. This study investigates the combination of supply devices based on confluent jets and VAV, both in terms of the nearfield flow behavior of the device and the impact on thermal comfort, indoor air quality and energy efficiency on a classroom-level space when the airflow rate is varied. The method used in this study is an experim

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Janbakhsh, Setareh. "A Ventilation Strategy Based on Confluent Jets : An Experimental and Numerical Study." Doctoral thesis, Linköpings universitet, Energisystem, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-117442.

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This study presents air distribution systems that are based on confluent jets; this system can be of interest for the establishment of indoor environments, to fulfill the goals of indoor climate and energy-efficient usage. The main objective of this study is to provide deeper understanding of the flow field development of a supply device that is designed based on wall confluent jets and to investigate the ventilation performance by experimental and numerical methods. In this study, the supply device can be described as an array of round jets on a flat surface attached to a side wall. Multiple

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Guillou, Florian. "CFD Study of the Flow around a High-Speed Train." Thesis, KTH, Aerodynamik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-102033.

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This document is a report summering the master thesis work dealing with the Computational Fluid Dynamic (CFD) study of the flow around a high-speed train. The model is a scaled 1:50 generic train with two cars, one inter-car gap and simplified bogies. A platform is set on the side of the train since one of the aim of the study is to look at the consequences of the phenomena in the wake on people or objects standing on the platform. The slipstream is one of this phenomena, it is due to the fact that the viscous air is dragged when the train is passing. If too strong, it can move or destabilize

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Zhang, Zhi. "A study of flow fields during filling of a sampler." Licentiate thesis, KTH, Materials Science and Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-10693.

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<p>More and more attention has been paid to decreasing the number and size of non-metallic inclusions existing in the final products recently in steel industries. Therefore, more efforts have been made to monitor the inclusions' size distributions during the metallurgy process, especially at the secondary steelmaking period. A liquid sampling procedure is one of the commonly applied methods that monitoring the inclusion size distribution in ladles, for example, during the secondary steelmaking. Here, a crucial point is that the steel sampler should be filled and solidified without changing the

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Buchteile zum Thema "SST k-ω turbulence model"

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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Ngouani, M. M. Siewe, Yong Kang Chen, R. Day, and O. David-West. "Low-Speed Aerodynamic Analysis Using Four Different Turbulent Models of Solver of a Wind Turbine Shroud." In Springer Proceedings in Energy. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-63916-7_19.

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AbstractThis study presents the effect of four different turbulent models of solver on the aerodynamic analysis of a shroud at wind speed below 6 m/s. The converting shroud uses a combination of a cylindrical case and an inverted circular wing base which captures the wind from a 360° direction. The CFD models used are: the SST (Menter) k-ω model, the Reynolds Stress Transport (RST) model, the Improved Delay Detached Eddies Simulation model (IDDES) SST k-ω model and the Large Eddies Simulation Wall Adaptive model. It was found that all models have predicted a convergent surface pressure. The RST, the IDDES and the WALE LES are the only models which have well described regions of pressure gradient. They have all predicted a pressure difference between the planes (1–5) which shows a movement of the air from the lower plane 1 (inlet) to the higher plane 5 (outlet). The RST and IDDES have predicted better vorticities on the plane 1 (inlet). It was also found that the model RST, IDDES, and WALE LES have captured properly the area of turbulences across the internal region of the case. All models have predicted the point of flow separation. They have also revealed that the IDDES and the WALE LES can capture and model the wake eddies at different planes. Thus, they are the most appropriate for such simulation although demanding in computational power. The movement of air predicted by almost all models could be used to drive a turbine.

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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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El-Hennawi, Ahmed, Muhammed Eltahan, Mohammed Magooda, and Karim Moharm. "Numerical Study of an Unbalanced Oil Vane Pump Using Shear Stress Transport (SST) k − ω Turbulence Model." In Recent Advances in Engineering Mathematics and Physics. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-39847-7_7.

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Menter, Florian R., Alexey Matyushenko, and Richard Lechner. "Development of a Generalized K-ω Two-Equation Turbulence Model." In Notes on Numerical Fluid Mechanics and Multidisciplinary Design. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-25253-3_10.

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Radmanesh, Amir Reza, Madjid Abbaspour, and Mohamad Reza Soltani. "Unsteady Aerodynamic Analysis of Different Multi-MW Horizontal Axis Wind Turbine Blade Profiles on SST K-ω Model." In Exergy for A Better Environment and Improved Sustainability 1. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-62572-0_2.

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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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Alkan, Ahmet Dursun, Onur Usta, Alpay Acar, and Elis Atasayan. "Investigation of Environmental Effects of High Speed Boats." In Progress in Marine Science and Technology. IOS Press, 2020. http://dx.doi.org/10.3233/pmst200021.

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Luxury high-speed boats are increasingly being used for entertainment purposes. However, not only humans, but also animals are negatively affected by high-speed boats, and time is running out fast for people to do something about it. This study presents a review of current negative effects of high-speed boats to the environment. In this study, the flow around a benchmark planing Fridsma boat is simulated by CFD and resistance values for different non-dimensional Froude number (Fn) conditions are validated from the experimental results obtained from the literature. Using the same CFD methodology, a catamaran model in which the towing tank test results are available, is simulated for different Fn conditions and resistance values are predicted. In the CFD analysis, unsteady flow around the Fridsma hull model and catamaran model is simulated using overset meshing technique and turbulence is modeled by Reynolds Averaged Navier Stokes (RANS) with SST (Menter) k-omega turbulence model. Resistance values are compared with the experimental data and required propulsion powers are estimated for different Fn conditions. Then, total resistance of the catamaran for full-scale vessel is calculated using an extrapolation method and required propulsion power predictions are conducted. Noise prediction, corresponding to the required propulsion power are presented. In particular, the change of noise level and harmful gases released into the environment, when the speed of the vessel increases are examined and discussed. Consequently, it is believed that this study would lay an important foundation for the widespread investigation for the negative effects of the high-speed boats in the future.

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Kątski, Bartosz, and Krzysztof Rogowski. "Analiza własności aerodynamicznych profilu NACA 0018 w zakresie małych liczb Reynoldsa." In Mechanika w Lotnictwie ML-XIX 2020. Instytut Techniczny Wojsk Lotniczych, Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej, 2020. http://dx.doi.org/10.15632/ml2020/57-65.

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W pracy przedstawiono rezultaty badań numerycznych profilu aerodynamicznego NACA 0018 w zakresie małych liczb Reynoldsa od 10 000 do 1mln oraz w zakresie kątów natarcia od 0◦ do 20◦. Wyniki zaprezentowano w postaci charakterystyk współczynników siły nośnej i oporu w funkcji kąta natarcia. Badania przeprowadzono, wykorzystując model turbulencji k-! SST oraz hybrydową siatkę obliczeniową złożoną z siatki strukturalnej w pobliżu krawędzi profilu oraz siatkę niestrukturalną w pozostałym obszarze domeny obliczeniowej. Intencją autorów pracy było pokazanie możliwości zastosowania podejścia numerycznego w badaniach profili w zakresie małych liczb Reynoldsa. Przeprowadzone badania pokazały, że minimalna liczba Reynoldsa, przy której wartość błędu jest akceptowalna, wynosi 40 000. Rezultaty badań symulacyjnych sił aerodynamicznych przedstawiono również tabelarycznie do wykorzystania w innych analizach.

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Konferenzberichte zum Thema "SST k-ω turbulence model"

Evans, Steve, та Sylvain Lardeau. "Validation of a turbulence methodology using the SST k-ω model for adjoint calculation". У 54th AIAA Aerospace Sciences Meeting. American Institute of Aeronautics and Astronautics, 2016. http://dx.doi.org/10.2514/6.2016-0585.

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Mehdizadeh, A., G. Vijayakumar, H. Foroutan та Amsini Sadiki. "A grid based zonal formulation of k-ω-SST-SAS model for complex turbulent flows". У THMT-15. Proceedings of the Eighth International Symposium On Turbulence Heat and Mass Transfer. Begellhouse, 2015. http://dx.doi.org/10.1615/ichmt.2015.thmt-15.590.

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Chougule, Nagesh K., Gajanan V. Parishwad, Sachin Pagnis, Prashant R. Gore, and Chandrashekhar M. Sewatkar. "Selection of CFD Turbulence Model for the Application of Submerged Multi-Air Jet Impingement." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-64765.

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Most impinging jet industrial applications involve turbulent flow in the whole domain downstream of the nozzle, and modeling turbulent flow presents the greatest challenge in the effort to rapidly and accurately predict the behavior of turbulent jets. Numerical modeling of impinging jet flows and heat transfer is employed widely for prediction, sensitivity analysis, and device design. Finite volume computational fluid dynamics (CFD) models of impinging jets have succeeded in making good predictions of heat transfer coefficients and velocity fields. The difficulties in accurately predicting vel

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Zhou, Ling, Tao Lang, and Weidong Shi. "Numerical Simulation of Different Turbulence Models in a Compact Return Diffuser." In ASME/JSME/KSME 2015 Joint Fluids Engineering Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/ajkfluids2015-9574.

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CFD have been became the main method to study the pump inner flow patterns. It is important to understand the differences and features of the different turbulence models. In this paper, the velocity flow fields in a compact return diffuser under multi-conditions are studied by CFD and PIV measurements. In the numerical simulation, three turbulence models are used to solve the steady flow filed using high-quality fine structured grids, which are including SST k-ω model, DES model and SST k-ω model with low-Re corrections. A special test rig is designed to carry out the 2D Particle Image Velocim

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Lodefier, Koen, Bart Merci, Chris De Langhe, and Erik Dick. "Transition Modelling With the SST Turbulence Model and an Intermittency Transport Equation." In ASME Turbo Expo 2003, collocated with the 2003 International Joint Power Generation Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/gt2003-38282.

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A transition model for describing bypass transition is presented. It is based on a two-equations k–ω model and a dynamic equation for intermittency factor. The intermittency factor is a multiplier of the turbulent viscosity computed by the turbulence model. Following a suggestion by Menter et al. [1], the start of transition is computed based on local variables. The choice of the Shear-Stress Transport (SST) model instead of a k–ε model is explained. The quality of the transition model, developed on flat plate test cases, is illustrated for cascades.

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Wang, Yong, Houlin Liu, Shouqi Yuan, Minggao Tan, and Minhua Shu. "Applicability of Turbulence Models on Characteristics Prediction of Centrifugal Pumps." In ASME-JSME-KSME 2011 Joint Fluids Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/ajk2011-03022.

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In order to research the applicability of turbulence model on characteristics prediction of centrifugal pumps at the design condition, standard k-ε turbulence model, k-ω turbulence model and SST turbulence model are selected, which are commonly used in the numerical prediction for head, efficiency and NPSHr of the centrifugal pumps. By using commercial code ANSYS CFX, the all three turbulent models are used to predict the characteristics of six centrifugal pumps with the different specific speeds at the design condition, which are varied from 34.3 to 260.5. The calculation results are compared

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Patel, Yogini, Teemu Turunen-Saaresti, Giteshkumar Patel, and Aki Grönman. "Numerical Investigation of Turbulence Modelling on Condensing Steam Flows in Turbine Cascade." In ASME Turbo Expo 2014: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/gt2014-26307.

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Understanding the condensation process at the low-pressure (LP) turbine is important because condensation introduces extra losses, and erosion caused by the droplets wear turbine blades. The paper presents an investigation of the turbulence modelling on the non-equilibrium homogeneous condensing steam flow in a stationary turbine cascade employing 2D compressible Navier-Stokes (NS) equations. The classical nucleation theory is utilized to model the condensation phenomena. The performance of various turbulence models (i.e., the Spalart-Allmaras, the k-ω, the k-ε, the RNG k-ε, the Realizable k-ε

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Kumar Lakshmanan, Saravana, Alok Mishra, and Ashoke De. "Assessment of Different Turbulence Models for Predicting Laminar Separation Bubble Over Thick Airfoils." In ASME 2015 Gas Turbine India Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/gtindia2015-1277.

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Accurate laminar-turbulent prediction is very much important to understand the complete performance characteristics of any airfoil which operates at low and medium Reynolds number. In this article, a numerical study has been performed over two different thick airfoils operating at low Reynolds number using k-ω SST, k-kl-ω and Spalart-Allmaras (SA) RANS models. The unsteady two dimensional (2D) simulations are performed over NACA 0021 and NACA 65-021 at Re 120,000 for a range of angle of attacks. The performances of these models are assessed through aerodynamic lift, drag and pressure coefficie

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Zhang, Li, Weimin Chen, Jianting Chen та Chuanming Zhou. "Verification and Validation of CFD Uncertainty Analysis Based on SST K-ω Model". У ASME 2020 39th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/omae2020-19093.

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Abstract CFD uncertainty analysis is a process to quantify the accuracy of numerical simulation results, and it is also a research hotspot in the past decades. ITTC(2017) requires uncertainty analysis of ship CFD simulation results, that is, verification and validation. In this paper, with reference to the recommended procedures by ITTC, the uncertainty of the CFD numerical simulation results of ship model resistance was analyzed. Based on the SST k-ω turbulence model, the Y+ values near the wall were set to 60,120,240, respectively. And for each and Y+ value, three different sets of grid dens

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Wang, Zhenfeng, Peigang Yan, Hongfei Tang, Hongyan Huang, and Wanjin Han. "The Simulation Study of Turbulence Models for Conjugate Heat Transfer Analysis of a High Pressure Air-Cooled Gas Turbine." In 2010 14th International Heat Transfer Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/ihtc14-22088.

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The different turbulence models are adopted to simulate NASA-MarkII high pressure air-cooled gas turbine. The experimental work condition is Run 5411. The paper researches that the effect of different turbulence models for the flow and heat transfer characteristics of turbine. The turbulence models include: the laminar turbulence model, high Reynolds number k-ε turbulence model, low Reynolds number turbulence model (k-ω standard format, k-ω-SST and k-ω-SST-γ-θ) and B-L algebra turbulence model which is adopted by the compiled code. The results show that the different turbulence models can give

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Berichte der Organisationen zum Thema "SST k-ω turbulence model"

Bigdeli, Mohammad, та Vahid Monfared. Investigation and Comparison of Stall Angle of Airfoil NACA 0012 in Reynolds Number of 3 × 106 with K‑ω SST, Realizable k‑ε, Spalart-Allmaras Turbulence Models. "Prof. Marin Drinov" Publishing House of Bulgarian Academy of Sciences, 2020. http://dx.doi.org/10.7546/crabs.2020.03.13.

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