Turbulence Forcing Scheme In Physical Space Bassed On Ornstein-Uhlenbeck Process

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F10%3APU88852" target="_blank" >RIV/00216305:26210/10:PU88852 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Turbulence Forcing Scheme In Physical Space Bassed On Ornstein-Uhlenbeck Process
Original language description
New turbulence forcing scheme is introduced in this work. This scheme operates in physical space. The main idea of this scheme is generating a force in every time step of simulation in particular points in the computational domain and this force is thanadded to momentum equations. The force is generated using Ornstein-Uhlenbeck stochastic process. The main feature of this process is that the force generated in next time step is not independent on the previous value (the Ornstein-Uhlenbeck is so calledMarkov process). So there is a correlation in the history of the generated force. It is suitable to use this force for generating turbulence because of this correlation. The developed forcing scheme was tested on the case of turbulent channel flow. Method for solution was Large Eddy Simulation with subgrid kinetic energy subgrid model. The results presented in this work are for low Reynolds number channel flow. For this case are the results in a good agreement with DNS data.
Czech name
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Czech description
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Project
<a href="/en/project/GA101%2F08%2F0096" target="_blank" >GA101/08/0096: Advanced Large Eddy Simulation modelling of particle-laden turbulent flow and shear-driven liquid wall film</a><br>
Continuities
S - Specificky vyzkum na vysokych skolach

Publication year
2010
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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