| GROUP VELOCITY CONTROL SCHEME WITH LOW DISSIPATION |
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| 作者姓名： | CHENG Jun-bo FU De-xun MA Yan-wen |
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| 作者单位： | LNM, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, China,LHD, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, China |
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| 基金项目： | NKBRSF CG，中国科学院资助项目，199032805，59876002，， |
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| 摘 要： | The six- th order Symmetric Compact Dif-ference scheme ( SCD6) developed by Lele1] ,fifth and third order Upwind Compact Differenceschemes ( UCD5 and UCD3) by Dexun Fu etal2 ,3] are used in simulating mixing layer,chan-nel flow,turbulence and other complex fields.These schemes have great advantages,such ashigh order accuracy,low dissipation,low dis-persion,and well capturing small scales in thefield,but non- physical numerical oscillation re-sults calculated by the compact schemes will…
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| 关 键 词： | low dissipation error group velocity control |
GROUP VELOCITY CONTROL SCHEME WITH LOW DISSIPATION |
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| CHENG Jun-bo,FU De-xun,MA Yan-wen.GROUP VELOCITY CONTROL SCHEME WITH LOW DISSIPATION[J].Chinese Journal of Aeronautics,2000,13(3):138-145. |
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| Authors: | CHENG Jun-bo FU De-xun MA Yan-wen |
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| Abstract: | In order to prevent smearing the discontinuity, a modified term is added to the third order Upwind Compact Difference scheme to lower the dissipation error. Moreover, the dispersion error is controled to hold back the non-physical oscillation by means of the group velocity control. The scheme is used to simulate the interactions of shock-density stratified interface and the disturbed interface developing to vortex rollers. Numerical results are satisfactory. |
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| Keywords: | upwind compact difference scheme interactions of shock-density stratified interface |
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