This paper analyzes and simulates the effect of the air change rate per hour (ACH) on contamination diffusion airflow field in turbulent clean-room of hole-board ventilation by using CFD.

针对孔板送风的乱流洁净室，运用C FD软件对不同换气次数条件下的气流组织和污染物扩散进行数值模拟分析。

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Three companies in India have been identified as the source of the contamination, and have had their licence to trade suspended by the Indian Spice Board pending further investigation.

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