Affiliation:
1. Department of Mechanical Engineering, Tatung Institute of Technology, Taipei, Taiwan, Republic of China
2. Division of Engineering Education and Centers, National Science Foundation, 4201 Wilson Boulevard, Arlington, VA 22230
Abstract
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.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
Reference25 articles.
1. Ahmed
I. Y.
, BarrowH., and DixonS. L., 1982, “An Experiment on Transient Heat and Mass Transfer in Humid Air Flow,” Heat Recovery System, Vol. 2, pp. 3–11.
2. Benedict
R. P.
, 1969, “Engineering Analysis of Experimental Data,” J. Engineering for Power, Vol. 90, pp. 21–30.
3. Blevins, R. D., 1977, Flow-Induced Vibration, Van Nostrand Reinhold Company, New York, Chap. 3, pp. 11–54.
4. Cheng
C. H.
, HongJ. L., and AungW., 1997, “Numerical Prediction of Lock-on Effect on Convective Heat Transfer From a Transversely Oscillating Circular Cylinder,” Int. J. Heat Mass Transfer, Vol. 40, pp. 1825–1834.
5. Chilukuri
R.
, 1987, “Incompressible Laminar Flow Past a Transversely Vibrating Cylinder,” ASME Journal of Fluids Engineering, Vol. 109, pp. 166–171.
Cited by
66 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献