解纯对流方程几种向后 特征差分格式的比较
ComParisonofSeveralBaekwardCharacteristie DifferenceSchemesforPureConvectiveEquations
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摘要: 介绍了几种向后特征差分格式,用两个典型算例对这几种特征差分格式的计算精度进行了分析比较。 计算结果表明,随着插值结点的增多,差分格式的计算精度也越来越高但计算效率却越来越低;具有尖峰剖面与 具有缓平剖面的对流方程,其最适宜的特征差分格式各不相同。Abstract: Severalbaekwardeharaeteristiediffereneesehemesthathavebeenemployedtosolvepure eonveetiveequationsarereviewedinthispaPer.Theaeeuraeyofthesesehemes15eomParedwithtwo typiealtestexamples.Theresultsshowthat,withtheinereaseintheinte印olationpoints,the eomputingaeeuraeyinereases,buttheeomPutingeffieieneydeereases.It15alsoshownthatthe feasibilityOfasehemedependsoneonveetiveProfiles,eitherflatorsharp.
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Key words:
- convecion /
- differeneesehemes:aeeuraey /
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