The Smagorinsky subgrid-scale model, a dynamic subgrid-scale model, and a stimulated subgrid-scale model have been used in a large eddy simulation (LES) program to compute airflow in a room. A fast Fourier transformation (FFT) method and a conventional iteration method were used in solving the Poisson equation. The predicted distributions of indoor air velocity, temperature, and contaminant concentrations show that the three subgrid-scale models can produce acceptable results for indoor environment design. The dynamic and stimulated models performed slightly better than the Smagorinsky model. The use of FFT can significantly reduce the computing time. LES is a tool of the next generation of indoor air distribution design.
Comparison of Different Subgrid-Scale Models of Large Eddy Simulation for Indoor Airflow Modeling
Contributed by the Fluids Engineering Division for publication in the JOURNAL OF FLUIDS ENGINEERING. Manuscript received by the Fluids Engineering Division October 27, 2000; revised manuscript received March 15, 2001. Associate Editor: G. Karniadakis.
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Su, M., Chen, Q., and Chiang, C. (March 15, 2001). "Comparison of Different Subgrid-Scale Models of Large Eddy Simulation for Indoor Airflow Modeling ." ASME. J. Fluids Eng. September 2001; 123(3): 628–639. https://doi.org/10.1115/1.1378294
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