On the mechanism of reverse flow in a channel with an obstruction at the entry

摘要: The occurrence of reverse flow in a channel when an obstruction is placed at the entry already known. In this article attempt made to bring out mechanism that governs phenomenon. Flow visualisation and pressure measurements are employed for purpose. front end essential triggering flow. For reverse, stagnant slow forward flow, sharp changes occur two ends channel. resulting field gives rise delicate balance along controls direction magnitude. It argued there limitation on maximum achievable.