Mist Jet Impingement Heat Transfer from a Heated Cylinder

Abstract

An experimental as well as numerical analysis on the heat transfer study of a two newlinephase air-water mist-jet impingement from a heated cylinder is carried out. The heated newlinecylinder is maintained at a constant heat flux at a temperature below the boiling regime. A newlinefull factorial parametric study is conducted for four different values each of the mist loading newlinefractions, Reynolds numbers and nozzle-to-surface spacings, and their effect on the heat newlinetransfer coefficient and the enhancement in the heat transfer are reported. The Reynolds newlinenumber (Rehyd.) defined based on the hydraulic diameter, is varied in the range 8820 and#61485; 17106, newlinethe mist loading fraction (f) in the range 0.25% and#61485; 1.0% and nozzle-to-surface spacing (H/d) newlinein the range 30 and#61485; 60. newline