Reduction of water entry impact force by a gas jet
Yunhua Jiang, Zhihui Zou, Lele Yang, Le Shen, Yun Liu, Mengqi Zhang
Abstract
In this work, we show experimentally a method for reducing impact force. We report experimental obvservations of different cavity regimes and impact modes formed by a gas jet under different conditions and examine their impact force. The jet cavity of interest can achieve 90% reduction of impact force. The mechanism of impact force reduction is considered to be the result of the reduction of the added mass and the coupling of the jet momentum.
Topics & Concepts
Reduction (mathematics)ImpactJet (fluid)MechanicsWork (physics)Momentum (technical analysis)Water jetCoupling (piping)Materials sciencePhysicsEnvironmental scienceClassical mechanicsThermodynamicsNozzleComposite materialMathematicsEconomicsFinanceGeometryFluid Dynamics Simulations and InteractionsFluid Dynamics and Heat TransferCombustion and Detonation Processes