The effect of gravity on self-similarity of Worthington jet after water entry of a two-dimensional wedge  

作　　者：Yan Du Jingzhu Wang Zhiying Wang Yiwei Wang 

机构地区：[1]Key Laboratory for Mechanics in Fluid Solid Coupling Systems,Institute of Mechanics,Chinese Academy of Sciences,Beijing 100190,China [2]School of Engineering Science,University of Chinese Academy of Sciences,Beijing 100049,China [3]Guangdong Aerospace Research Academy,Guangzhou 511458,China [4]School of Future Technology,University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Theoretical & Applied Mechanics Letters》2023年第5期382-386,共5页力学快报（英文版）

基　　金：supported by the National Natural Science Founda-tion of China(Grant Nos.12122214,12272382,12293000,12293003,and 12293004);the Youth Innovation Promotion Association CAS(Grant No.2022019);High-level Innovation Research Institute Program of Guangdong Province(Grant Nos.2020B0909010003 and GARA2022002000).

摘　　要：The effect of gravity on the self-similarity of jet shape at late stage of Worthington jet development is investigated by experiment in the study.In addition,the particle image velocimetry(PIV)method is introduced to analyze the development of flow field.There is a linear scaling regarding the axial velocity of the jet and the scaling coefficient increases with the Froude number.

关 键 词：Wortington jet SELF-SIMILARITY Jet shape PIV 

分 类 号：O358[理学—流体力学]