Influence of Sound upon Local Heat Transfer from a Cylinder

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Abstract
Measurements far local heat transfer on a horizontal heated circular cylinder in a horizontal transverse standing sound field are reported. Observations were made by Schmidt's method, which makes use of optical properties of thermal boundary layers and requires no correction for thermal conduction or radiation. Significant local effects are found at intensities well below the “critical” sound-pressure level. The “critical” level determined from average heat-transfer measurements is found to have no intrinsic fluid-mechanical significance.

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