Theoretical analysis of capillary performance of triangular microgrooves

Abstract

The purpose of this study is to analyze the capillary performance of triangular microgrooves. The influences of several major of parameters on the capillary performance (wetted axial length) of triangular microgrooves are discussed theoretically. One dimensional, nonlinear and contact angle possessed differential and algebraic equations are both used for the theoretical analyses of triangular microgrooves. In this study, the curvature radius, cross section area, and distribution of pressure and velocity of working fluid in microgrooves are considered. Besides, the mutual effects among inertial force, body force, capillary force, and friction force are also discussed. The significance of contact angle and hydraulic diameter to the prediction of capillary performance for microgrooves are both demonstrated by the proposed algebraic solutions.

Experimental investigation of enhanced spreading and cooling from a microgrooved surface

“…Evaporation heat transfer characteristics in the microregion of a rotating miniature heat pipe have been widely studied by Faghri and his co-workers (Rahman and Faghri 1992;Faghri et al 1993). Detailed theoretical analysis of capillary performance of triangular microgrooves has been executed by Sheu et al (2004). An analytical model was proposed by Xu and Carey (1990) that can be used to predict heat transfer characteristics of evaporation of film on V-shaped microgrooves.…”