The results show that an eddy surrounding the main stream of the multiple jets exists and forms several strong shear flows and enhances the effect of energy dissipation 研究結果表明:多股多層淹沒射流利用在射流軸線周圍所形成的強剪切、三維立體漩滾的劇烈混摻來實現(xiàn)消能,消能率較高,且在平面上沒有形成明顯的、貫穿的立軸漩渦。
Of the currently available coolers for electronic products with a high heat flux , micro - jets impingement cooling heat sinks are able to provide the best heat transfer performance : lowering the maxmal temperature and the temperature difference . the heat transfer for multiple jets impingement has been studied firstly for summarizing a few rules . and then a copper micro - jets impingement cooling heat sink consisting of five copper sheets is designed in this paper and the jet diameter is 0 . 15mm 本文首先對陣列射流沖擊進行了實驗研究,總結了陣列射流沖擊的一些規(guī)律和特性,在此基礎上,根據(jù)數(shù)值模擬優(yōu)化結果設計和制作了微射流陣列冷卻熱沉(射流孔直徑d = 0 . 15mm ) ,并采用去離子水和氮氣作為工質(zhì),對熱沉內(nèi)流體壓降和傳熱特性進行了研究。