METHOD TO IMPROVE HYDRODYNAMICS AND HEAT TRANSFER OF HYDRAULIC JUMP REGION AND HEAT TRANSFER IN JET IMPINGEMENT COOLING BY WATER.

摘要

A method to improve hydrodynamics and heat transfer of hydraulic jump region in the process of jet impingement cooling, comprising the steps of: dissolving a surfactant additive, which is DuPont™ Zonyl® FSH in a cooling medium and forming an aqueous surfactant solution; providing an impinging jet nozzle module capable of generating an accurately equal flow rate for each nozzle; measuring temperature of the surface to be cooled by attaching thermocouple; creating a fully-developed flow via the nozzle module by using a pump such that the aqueous surfactant solution is impinged on the coolable surface at a flow- rate covering from laminar to turbulent.