Adequacy of wind ventilation in upgraded shelters. Final report Oct 78-May 80

Experimental and analytical investigations were conducted for the purpose of evaluating the adequacy of natural ventilation in upgraded shelters. A unique low-speed wind tunnel which uses photographic measurement techniques for flow tracing of neutrally buoyant bubbles through openings was utilized to conduct scaled model tests of three shelter models to determine the ventilation air throughput CFM as a function of wind speed, relative wind approach angle and opening pattern.