Shock wave propagation of circular dam break problems

Conference of Theoretical Physics and Nonlinear Phenomena 2014: "From Universe to String's Scale"

Mungkasi, Sudi^1

Department of Mathematics, Faculty of Science and Technology, Sanata Dharma University, Mrican, Tromol Pos 29, Yogyakarta

55002, Indonesia^1

关键词: At rests;    Computational mathematics;    Dam-break problems;    Dam-breaks;    Physics community;    Propagation speed;    Research results;    Water flows;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/539/1/012022/pdf
DOI  :  10.1088/1742-6596/539/1/012022

来源: IOP

【 摘 要 】

We examine the behavior of shock wave propagation of circular (radial) dam break problems. A dam break problem represents a reservoir having two sides of water at rest initially with different depth separated by a wall, then water flows after the wall is removed. The behavior of shock wave propagation is investigated with respect to water levels and with respect to the speeds of the shock waves. To the author's knowledge, such investigation for circular dam break problems had never been done before. Therefore, this new work shall be important for applied computational mathematics and physics communities as well as fluid dynamic researchers. Based on our research results, the propagation speed of shock wave in a circular dam break is lower than that of shock wave in a planar dam break having the same initial water levels as in the circular dam break.