爆炸与冲击2017，Vol.37Issue(2)：347-352,6.DOI:10.11883/1001-1455(2017)02-0347-06
一种三阶有限体积法及其在欠膨胀射流激波结构数值模拟中的应用
A three-order finite volume method and its application to under-expanded jet shock wave structure simulation
摘要
Abstract
By considering the under-expanded jet flow from nozzle exit,the integral form Euler equations for unsteady compressible flow in the Lagrange coordinates of a moving control volume was developed.By using three-order essentially non-oscillatory (ENO) interpolations at cell interfaces,a three-order ENO finite volume method for the integral form Euler equations was presented.The Sod shock tube case and nozzle outlet under-expanded jet shock wave structures were used to test the proposed scheme.The numerical results demonstrate that the method is accurate and non-oscillatory,and it can capture the wave structures of jet flow fields including shock cell structure,slip lines,jet boundary and the triple point well.Meanwhile,the simulated Mach disk locations in wave structures coincide with the experimentally measured ones,especially the error of the first Mach disk locations in wave structures between the numerical results and the experimental results was less than 1.1％.关键词
激波结构/基本无振荡/有限体积法/欠膨胀射流Key words
shock wave structures/essentially non-oscillatory/finite volume method/under-expanded jet分类
数理科学引用本文复制引用
谢政,谢建,李良..一种三阶有限体积法及其在欠膨胀射流激波结构数值模拟中的应用[J].爆炸与冲击,2017,37(2):347-352,6.基金项目
国家自然科学基金项目(51475462) （51475462）
