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ISSN Online: 2377-424X

ISBN Print: 0-89116-299-2

International Heat Transfer Conference 7
September, 6-10, 1982, Munich, Germany

WAKE INTERFERENCE FOR A HEATED OSCILLATING CYLINDER

Get access (open in a dialog) DOI: 10.1615/IHTC7.2910
pages 459-464

要約

The comparison between the prediction of a quasi-steady, transient analysis and experimental measurements for the heat transfer from an oscillating cylinder to air at sub-atmospheric pressures is presented. Data cover vibrational Reynolds numbers from about 7 to 230, Stokes parameters (D√(f/v)) from 0.13 to 1.6, wall-to-environmental temperature ratios to 1.4, ube Rayleigh/ Reynolds2 quotients to 0.15, and pressures from 0.06 to 0.9 atmospheres. When based on the vibrational Reynolds number (3.66φAD)/(Pµ), agreement is good if wake Interference is avoided. A approximate analysis predicts that the reduction in heat transfer due to interaction with the heated wake should be a function of the vibrational Reynolds number and a wake Rayleigh number, (8Pr g βA3qc)/ (v2k). Examination of the data shows that wake interference is minimized by minimizing the parameter Reavib/Rae, where a is the exponent in a correlation for pure forced convection.