Experimental Study of the Effect of Transverse Oscillation on Convection Heat Transfer From a Circular Cylinder

The present study is concerned with heat transfer characteristics of forced convective flows over a transversely oscillating cylinder. The effect of oscillation of the cylinder on heat transfer coefficient and flow pattern is evaluated by experimental measurement. A modified transient test method and a flow visualization technique are employed to determine the heat transfer coefficient and to observe the flow pattern, respectively, for various dimensionless oscillation frequencies (Sc ), dimensionless oscillation amplitudes (A/D), and Reynolds numbers (Re). The ranges of these parameters considered in this study are 0 ≤ Sc ≤ 0.65, 0 ≤ A/D ≤ 0.628, and 0 ≤ Re ≤ 4000. Results show that the heat transfer coefficient can be significantly increased by the oscillation of the cylinder. Two effects that enhance the heat transfer performance are found, namely, the lock-on effect and the turbulence effect. A maximum of 34 percent increase in heat transfer is found within the parameter ranges considered in this study. Agreement of the present data is found with previous numerical studies; however, an existing approximate method, which ignores the lock-on phenomenon but which is commonly used to estimate the effect of oscillation on heat transfer, is found to be inapplicable in this study.

[1]  Chin‐Hsiang Cheng,et al.  Numerical prediction of lock-on effect on convective heat transfer from a transversely oscillating circular cylinder , 1997 .

[2]  J. Piquet,et al.  FLOW STRUCTURE IN THE WAKE OF AN OSCILLATING CYLINDER , 1989 .

[3]  A. Ramachandran,et al.  Effect of vibration on heat transfer from a horizontal cylinder to a normal air stream , 1961 .

[4]  R. P. Benedict,et al.  Engineering Analysis of Experimental Data , 1969 .

[5]  S. J. Kline,et al.  Describing Uncertainties in Single-Sample Experiments , 1953 .

[6]  M. Ozisik.  Heat Transfer: A Basic Approach , 1984 .

[7]  Owen M. Griffin,et al.  Review : vortex shedding lock-on and flow control in bluff body wakes , 1991 .

[8]  G. Rankin,et al.  A finite difference calculation of forced convective heat transfer from an oscillating cylinder , 1994 .

[9]  Malcolm L. Spaulding,et al.  Numerical Solution for Laminar Two Dimensional Flow About a Cylinder Oscillating in a Uniform Stream , 1982 .

[10]  An experiment on transient heat and mass transfer in humid air flow , 1982 .

[11]  George Em Karniadakis,et al.  Frequency selection and asymptotic states in laminar wakes , 1989, Journal of Fluid Mechanics.

[12]  Robert J. Moffat,et al.  Describing the Uncertainties in Experimental Results , 1988 .

[13]  R. Moffat.  Using Uncertainty Analysis in the Planning of an Experiment , 1985 .

[14]  O. Griffin,et al.  The vortex-street wakes of vibrating cylinders , 1974, Journal of Fluid Mechanics.

[15]  R. Blevins,et al.  Flow-Induced Vibration , 1977 .

[16]  A. Laird,et al.  Heat Transfer from a Cylinder Oscillating in a Cross-Flow , 1978 .

[17]  B. G. Van Der Hegge Zijnen,et al.  Heat transfer from horizontal cylinders to a turbulent air flow , 1958 .

[18]  Donald Rockwell,et al.  Flow structure from an oscillating cylinder Part 2. Mode competition in the near wake , 1988, Journal of Fluid Mechanics.

[19]  R. Chilukuri.  Incompressible Laminar Flow Past a Transversely Vibrating Cylinder , 1986 .

[20]  N. Ko,et al.  Heat transfer from a vibrating cylinder , 1981 .