Effects Of Wind Tunnel Disturbances On Boundary Layer Transition With Emphasis On Radiated Noise
Download Effects Of Wind Tunnel Disturbances On Boundary Layer Transition With Emphasis On Radiated Noise PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get Effects Of Wind Tunnel Disturbances On Boundary Layer Transition With Emphasis On Radiated Noise book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages.
Effects of Wind Tunnel Disturbances on Boundary-layer Transition with Emphasis on Radiated Noise
Effects of wind tunnel free-stream disturbances on boundary-layer transition are reviewed. Experimental results show that free-stream disturbances dominate the transition process as determined by the experimentally measured transition Reynolds numbers on simple geometries (flat plates and sharp cones). Principal modes of disturbance are turbulence (u(tilde)/U infinity) and acoustic sound (p(tilde)/q infinity) at subsonic speeds; hole/slot acoustic resonance at transonic speeds (p(tilde)/q infinity); and tunnel wall turbulent-boundary layer radiated noise at supersonic-hypersonic speeds (p(tilde)/q infinity). Data correlations and resulting empirical equations that show the direct relationship between transition Reynolds numbers and free-stream disturbance levels are presented and discussed.