教師資料查詢 | 類別: 會議論文 | 教師: 牛仰堯 NIU, YANG-YAO (瀏覽個人網頁)

標題:Simulation of the interaction of shock wave hitting bubbles and droplets
學年106
學期1
發表日期2017/10/19
作品名稱Simulation of the interaction of shock wave hitting bubbles and droplets
作品名稱(其他語言)
著者Yang-Yao Niu and Yu-Chieh Chen
作品所屬單位
出版者
會議名稱Third Computational Mechanics Conference in Taiwan
會議地點Tainan
摘要In this study, we have implemented the sharp interface algorithm with the existing schemes, i.e. A robust MUSCL type AUSMD and THINC schemes which employs a approximated Riemann solver along with the Tangent of Hyperbola for Interface Capturing (THINC) technique to reconstruct the solution function for both smooth profile and discontinuity. The basic idea is to reconstruct the solution functions so that the jumps at cell boundaries are minimized, which effectively reduces the numerical dissipation in the resulting schemes. The THINC reconstruction automatically realizes the highest possible polynomial interpolation for smooth profile, whilst prefers other forms of reconstructions in the presence of discontinuities. The concept is a general platform of more profound impact can be used with other candidate reconstructions to further explore high-fidelity schemes for capturing both smooth and discontinuous solutions. Here, to consider the multi-component flow equations, the mixture model is regarded as a model equation. The transport equation for each volume fraction is expressed in quasi-conservative form. Numerical model is not only demonstrated to maintain pressure equilibrium over contact discontinuities using conservative pressure update, but also AUSMD are shown to enhance pressure being continuous across the contact discontinuity by means of a blend function of the ratio of pressure to density As shown in Excellent preliminary numerical results have been obtained for the Euler conservation laws, which the 2-D shock-cylinder interaction problem involves shock waves, material interfaces and their interaction.
關鍵字Multi-component flow, AUSMD, shock, bubble, droplet, sharp intrerface.
語言英文
收錄於
會議性質國內
校內研討會地點
研討會時間20171019~20171020
通訊作者
國別中華民國
公開徵稿
出版型式
出處Third Computational Mechanics Conference in Taiwan
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