Numerical Simulation on Ventilated Cavity Flow with Different Turbulence Models

Abstract:

The gas leakage and capabilities in cavity tail-part can affect the characteristics of ventilated cavity shape, while turbulence models influence directly the function of turbulence and gas-leakage mode in cavity tail-part. To compare the impact of two turbulent models (large eddy simulation (LES) and Renormalization Group (RNG) k-ε) on ventilated cavity shape, FLUENT6.2 software was used to simulate the three-dimensional ventilated cavity flow, taking into account gravity effects, the cavity transient image and pressure distributions along model surface under two turbulence models were also presented. The results show that the results of LES are more consistent with the transient characteristics of ventilated cavity, and are more suitable for simulations of ventilated cavity flow than RNG k-ε model.

• Periodical: Applied Mechanics and Materials (Volumes 368-370)
• Pages: 544-548
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.368-370.544
• Online since: August 2013
• Authors: Xiao Hu, Yong Liang Xiong
• Keywords: Cavity Shape, Simulation, Turbulence Model, Ventilation

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