A fifth-order high-resolution shock-capturing scheme based on modified weighted essentially non-oscillatory method and boundary variation diminishing framework for compressible flows and compressible two-phase flows
نویسندگان
چکیده
First, a new reconstruction strategy is proposed to improve the accuracy of fifth-order weighted essentially non-oscillatory (WENO) scheme. It has been noted that conventional WENO schemes still suffer from excessive numerical dissipation near-critical regions. One reasons they tend under-use all adjacent smooth substencils thus fail realize optimal interpolation. Hence in this work, modified (MWENO) designed restore highest possible order interpolation when three target or two are smooth. Since detector formulated under original smoothness indicators, no obvious complexity and cost added simulation. This idea successfully implemented into classical schemes, which near critical region but without destroying properties. Second, tangent hyperbola for interface capturing (THINC) scheme introduced as another candidate better represent discontinuity. Finally, MWENO THINC with boundary variation diminishing algorithm further minimize across discontinuities. Numerical verifications show accurately captures both discontinuous flow structures simultaneously high-resolution quality. Meanwhile, presented effectively reduces error suppresses spurious oscillation presence strong shock discontinuity compressible flows two-phase flows.
منابع مشابه
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ژورنال
عنوان ژورنال: Physics of Fluids
سال: 2021
ISSN: ['1527-2435', '1089-7666', '1070-6631']
DOI: https://doi.org/10.1063/5.0045635