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摘要: 采用间断有限元方法、LS方法和通量装配技术相结合,建立了一种计算可压缩多介质流动的有效 方法。计算中以光滑Heavside函数构造流体比热比和重新初始化方程中的符号距离函数,并采用通量装配 技术抑制界面附近的非物理振荡。为解决可压缩多介质流动提供一种新的手段。Abstract: Aneffectivenumericalsolverwasdevelopedforcompressiblemulti-componentfluidflows bycombiningalevelsetmethodfortheinterfacetracking,aRunge-kuttadiscontinuousfiniteelement methodforthediscretizationoftheEulerequationsandasimplefixmethodforpreventingspurious oscillationsneartheinterface.Incalculation,thespecific-heatratiooftheflowandanewsignfunctionweredefinedbyusingasmoothHeavisidefunction. Resultsshowthatthedevelopedmethodis feasibleforsolvingcompressiblemulti-componentfluidflows.
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Key words:
- fluidmechanics /
- movinginterface /
- discontinuousfiniteelementmethod /
- multi-component fluid /
- LSmethod
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