“数值耗散和数值色散”的概念、定义、翻译、参考文献-科学参考

单词	数值耗散和数值色散
释义	数值耗散和数值色散 Encyclopedia 理学﹝实验力学﹞释 numerical dissipation and numerical dispersion数值耗散和数值色散数值耗散是使数值解的幅值（一般用数值解向量的某个范数表示）小于精确解的幅值，而数值色散是使数值解的波形发生畸变的特性。两者都是时间发展型偏微分方程，主要是对流方程及对流-扩散方程数值方法的重要性质。
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