2016 Volume 81 Issue 730 Pages 1117-1125
The Impinging Jet Ventilation System is an air-conditioning method to form thermal stratification. The final objective of this work is to establish a simplified prediction method of vertical temperature profile. As a numerical experiment, a parametric study on supply air momentum is first conducted by CFD in this paper. Based on those results, appropriate turbulent thermal diffusivity in the Block Model corresponding to the supply air condition is determined, because it is of great importance on vertical temperature distribution. The correlation between key dimensionless number regarding important design conditions and the turbulent thermal diffusivity are finally shown.
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