Experimental and numerical studies on the spray cooling of deionized water in non-boiling regime

• DOI: 10.1016/j.csite.2023.102834
• Publication Date: 2023-03-04T07:02:34Z
• Authors: H. Wan; P.J. Liu; G.Q. He; Z.R. Xue; F. Qin; W.Q. Li
• Keywords: Sauter mean diameter; Spray characteristics; Mass flow rate; Leidenfrost effect

High-efficiency spray cooling technology has received increase of interest for high heatflux applications. Experimental and numerical investigations on heat transfer in single-phase deionized water are reported this paper. The 3D model is established based Discrete Phase Model Lagrange Wall Film model, comprehensively considering the exchange mass, momentum energy between air (continuous phase) droplets (discrete phase), liquid film at heated surface. PDA adopted to measure Sauter Mean Diameter (SMD) near-wall droplets. influences mass flow rates, nozzle diameters heights characteristics discussed. Results indicate that increasing rate can reduce SMD due We number improve coefficient. Liquid-film thickness either low or rate, but minor influence performance. optimal diameter 0.6 mm rather than smaller higher because area similar area. Similar reason height 20 mm.