closed duct 中文意思是什麼
closed duct
解釋
閉合管道-
The results indicate that the recirculations are caused at the closed end of the main duct and near the lower wall of the main duct in the lower side duct, and the secondary recirculation in the main duct ' s cross section, which appears only near the lower side duct, is caused due to section enlargement as gas enters the main duct from the side duct, when gas enters only at the entrance of the side duct
實驗結果表明,在只有支管進氣的情況下,在總管的封閉端和支管下游總管壁面處產生了迴流;以及氣流從支管進入總管後由于截面擴張在總管橫截面上所誘發的二次流,並且二次流現象只發生在支管下游附近的總管橫截面上。
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