Air Bag Aspiration Simulation

The analysis of air aspiration during air-bag inflator discharge has not been presented in the literature. This paper presents a numerical model to analyze inflator discharge to an open domain, and includes the effect of a canister perforated with holes to permit air intake to the jet flow. Experimental results are presented for comparison. Computational results show that as much as 20% of the gas mixture for air-bag inflation may come from free air aspiration.