Comparison of Different Subgrid-Scale Models of Large Eddy Simulations for Indoor Airflow Modeling  

Oleh:

Su, Mingde ; Chen, Qingyan ; Chiang, Che-Ming

Jenis: Article from Bulletin/Magazine
Dalam koleksi: Journal of Fluids Engineering vol. 123 no. 3 (2001), page 628-639.
Topik: large eddy simulation; different; subgrid - scale models; large eddy simulation; indoor; airflow; modeling

Ketersediaan

Perpustakaan Pusat (Semanggi) Nomor Panggil: JJ89.2 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

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.

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