常見例句When is a Flow Compressible [For Both Steady and Unsteady Flow]? 什么時候流動是可壓縮的[對定常和非定常流來說]?It describes unsteady flow toward a discharging well in an extensive aquifer. 它描述位于廣闊含水層中的抽水井的非穩(wěn)定流。Additional visual observations are usually in order to establish the advent of unsteady flow, intermittent stall, and full stall. 通常采用另外一些目視法來確定非常定流斷續(xù)失速和全失速的出現(xiàn)。Thus, a new approach was available to utilize the potentiality of intrinsic unsteady flow. 為固有非定常潛能的利用提供了一類新途徑。Once producing by socker rod pump, the velocity and pressure of liquid are changing with the time in unsteady flow. 在有桿泵抽油生產(chǎn)條件下,流體的速度和壓力都隨時間變化,處于非穩(wěn)定流動狀態(tài)。The governing equations are the usual Navier-Stockes equations for the unsteady flow. 推導(dǎo)了控制方程在特定坐標系空間的表達,給出了適當?shù)倪吔鐥l件。 返回 unsteady-flow