Shock wave interaction with a near-critical fuel droplet скачать в хорошем качестве

Shock wave interaction with a near-critical fuel droplet

Shock wave interaction with a near-critical fuel droplet Bradley Boyd, J. Mike Walker '66 Mechanical Engineering Department, Texas A&M University, USA Dorrin Jarrahbashi, J. Mike Walker '66 Mechanical Engineering Department, Texas A&M University, USA DOI: https://doi.org/10.1103/APS.DFD.2020.... Shock-droplet interactions occur in a spectrum of high-speed propulsion systems e.g. scramjets and rotating detonation engines. When the combustion chamber pressure nears the critical pressure of the fuel/air mixture, transcritical behavior involving the transition from liquid-like to gas-like states is expected. We consider the interaction of a shockwave with a liquid droplet at near-critical conditions. A multiphase diffuse-interface solver coupled with the Peng-Robinson equation of state is developed to accurately determine the state of the fluid as the shock propagates through the droplet. The results show the influence of varying the initial temperature of the droplet and the shockwave strength on the droplet instabilities and breakup behavior. See other videos from the 2020 Gallery of Fluid Motion: https://gfm.aps.org/