Gravity Modulation Effects on Transient-free Convection Flow Past an Infinite Vertical Isothermal Plate

作者: R.K. Deka , V.M. Soundalgekar

DOI: 10.14429/DSJ.56.1913

关键词: Rayleigh–Bénard convectionMechanicsRayleigh numberNatural convectionConvection cellPhysicsConvectionGeodesyPrandtl numberCombined forced and natural convectionLeading edge

摘要: An exact solution to the free convection flow influenced by gravity modulation has been derived Laplace-transform technique. Velocity profiles, penetration distance from leading edge, and skin-friction expressions are derived. profiles shown graphically, numerical values of skin friction tabulated. It was observed that transient velocity decreased with increasing frequency gravitymodulation or Prandtl number but increased time t. Also, transition conduction delayed t, it occured nearer edge as increased.

参考文章(8)
S. Ostrach, Convection phenomena of importance for materials processing in space In: Materials sciences in space with application to space processing. (A77-36076 16-12) New York. pp. 3- 32 ,(1977)
P. M. Chung, A. D. Anderson, Unsteady Laminar Free Convection Journal of Heat Transfer. ,vol. 83, pp. 473- 478 ,(1961) , 10.1115/1.3683670
Wu Shung Fu, Wen Jiann Shieh, A study of thermal convection in an enclosure induced simultaneously by gravity and vibration International Journal of Heat and Mass Transfer. ,vol. 35, pp. 1695- 1710 ,(1992) , 10.1016/0017-9310(92)90140-N
J. A. Schetz, R. Eichhorn, Unsteady Natural Convection in the Vicinity of a Doubly Infinite Vertical Plate Journal of Heat Transfer. ,vol. 84, pp. 334- 338 ,(1962) , 10.1115/1.3684386
B. Gebhart, Transient Natural Convection From Vertical Elements Journal of Heat Transfer. ,vol. 83, pp. 61- 70 ,(1961) , 10.1115/1.3680469
R. J. Goldstein, D. G. Briggs, Transient Free Convection About Vertical Plates and Circular Cylinders Journal of Heat Transfer. ,vol. 86, pp. 490- 500 ,(1964) , 10.1115/1.3688728
Ben Q. Li, The effect of magnetoc fields on low frequency oscillating natural convection International Journal of Engineering Science. ,vol. 34, pp. 1369- 1383 ,(1996) , 10.1016/0020-7225(96)00044-4
R. Clever, G. Schubert, F. H. Busse, Two-dimensional oscillatory convection in a gravitationally modulated fluid layer Journal of Fluid Mechanics. ,vol. 253, pp. 663- 680 ,(1993) , 10.1017/S0022112093001946