shock discontinuity 中文意思是什麼
shock discontinuity
解釋
激波間斷- shock : n 1 沖突；沖撞；沖擊；突擊。2 震動；沖動；激動。3 感動；憤慨；驚愕；震驚。4 地震。5 【醫學】休克...
- discontinuity : n. 1. 斷絕，中斷；間斷。2. 【物理學】不連續性，突變性，突變點；【數學】不連續點；斷續函數。
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In the fields of fluid dynamics, entropy inequality reflects the second law of thermodynamics. i. e. entropy must increase across shock waves ( a kind of discontinuity ). all kind of approximate schemes should reflect the fact that it must satisfies some kind of discrete entropy inequality ). from the view of practical computation, stability and theo - retical error of any kind discrete schemes all dependend of the smoothness of the solution of ( 0. 2. 1 ). generally, the approximate solution have good stability and theoretial error in the area where the solutions have more regularity and poor stability and theoretial error in other area
從流體力學來看，它事實上是熱力學第二定理的反映，即熵越過激波（一種間斷）要增加。各種估計格式構造的估計解應反映這一事實，即滿足熵不等式。從實際計算來看，總是通過離散化求解，不考慮計算的積累誤差，它的穩定性與計算精度都依賴與真解的光滑性，一般說，在解較光滑的區域有較好的穩定性與計算精度，而在較粗糙的區域則相反。 -
Some comparisons between the improved scheme and original scheme were given through several numerical experiments. the results showed that the improved scheme had higher resolution for discontinuity, especially for the shock and shear flow, it also had the more accurate solution for the viscous flow
經一維和二維典型算例檢驗證實，改進后的格式對激波和剪切流的解析度得到了加強，求解的準確性和收斂性都有一定的提高。
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