Comparisons between various lengths of penstock and different types of waterhammer using circuit equivalent method and characteristic method are presented by digital simulation. 最后對不同類(lèi)型水擊和不同長(cháng)度的壓力鋼管進(jìn)行仿真，并將電路等值方法和特征線(xiàn)方法比較。
In this article the procedures are de-scribed for determining free-vortex segment properties.Characteristics method is used to design nozzle Milch produces free-vortex seg-ment. 本文提出了確定氣動(dòng)窗口所需自由旋渦氣動(dòng)特性的過(guò)程，討論了特征線(xiàn)方法在非對稱(chēng)超音速?lài)姽茉O計中的應用，該噴管被用來(lái)產(chǎn)生自由旋渦流動(dòng)。
