關于通氣空泡及其路徑數值求解的挑戰性問題

作者：E.L.Amromin

摘要：Ventilated cavitation has been successfully employed as ship drag reduction technology and potentially can mitigate flowinduced vibration. The obtained successes were based on solutions of design problems considered in the framework of ideal fluid theory with their following validation by towing tank tests. However, various aspects of the interaction of ventilated cavities with the viscous flows around the ship hulls remain unclear, whereas there is usually no possibility to simultaneously keep the full-scale Froude number and cavitation number in the test facilities. So, the further progress of the application of ventilated cavitation substantially depends on the ability of computational tools to predict this interaction. This paper briefly describes the state-of-the-art computation of ventilated cavitation and points out the most challenging unsolved problems that appeared in the model tests (prediction of air demand by cavities, ventilation effect on ship drag, on hydrofoil lift, and on the propagation of shock waves in cavities).

發文機構：Mechmath LLC

關鍵詞：VentilatedCAVITATIONCOMPUTATIONALfluiddynamicsLiftdragandairDEMANDofcavitatingbodiesSHOCKWAVESinCAVITIESVentilated cavitationComputational fluid dynamicsLift, drag, and air demand of cavitating bodiesShock waves in cavities

分類號： T[一般工業技術]