MIXED CONVECTION FROM A ROTATING CONE WITH VARIABLE SURFACE TEMPERATURE

Abstract

A general analysis of steady laminar mixed convection heat transfer between a quiescent fluid and a rotating or nonrotating cone is presented. A new mixed convection parameter, which also represents a dimensionless streamwise coordinate, is proposed to serve as an index of the relative contributions of free convection and rotational (forced) convection. Appropriate coordinate transformations yield computationally efficient numerical solutions which are uniformly valid over the entire range of mixed convection from the pure free convection limit (nonrotating cone) to the pure forced convection limit (rotating cone). Of particular interest are the effects of the fluid Prandtl number, the power function index (nonisothermal factor), and mixed convection parameter on the local skin friction coefficient and the local Nusselt number.

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T. Y. Wang

Address correspondence to T. Y. Wang, Department of Mechanical Engineering, Mingchi Institute of Technology, 84 Gungjuan Road, Taishan, Taipei, Taiwan 24306, Republic of China.