THE EFFECT OF A RESONANT ACOUSTIC FIELD ON LAMINAR FLOW IN A CIRCULAR TUBE.
GEORGIA INST OF TECH ATLANTA
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The analytical and the experimental study considered flow in a circular tube. The conclusions from these investigations are 1 A resonant acoustic field will produce steady secondary flow in a channel or a circular tube with or without through flow 2 the size of the standing vortices which are formed in the case of through flow is, to a first approximation, solely a function of the parameter Msq M sub 0 3 the effect of sound on the local heat transfer rate for a horizontal isothermal tube as obtained by Jackson is qualitatively explained in terms of the flow field which was observed experimentally and predicted analytically, and 4 the sound threshold levels obtained by Eastwood the sound levels below which a resonant acoustic field does not locally affect the heat transfer rate correspond to conditions for which Msq M sub 0 approx 63. Author