WMEFENS方法的数值稳定性和精度续
首发时间:2006-07-25
摘要:对采用WMEFENS方法求解点源平面内波动问题时的数值稳定性和精度以及波动的透射特性进行了数值试验研究。计算结果表明:⒈ 对于合理的时空离散步距,该方法具有超常的阻尼稳定性、近场稳定性、边界计算精度和阻尼适用范围,具有重要的理论和应用价值。⒉ 平面内矢量波动的主要传播和透射方向以及相应的波速具有很强的时空可变性,WMEFENS方法考虑了这些特性,是取得本文计算结果的一个重要保证。
关键词: 平面内波动 WMEFENS方法 阻尼稳定性 近场稳定性
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The stability and precision of the WMEFENS method (Continue)
Abstract: numerical test study about the stability and precision of the method is made by discussing the solution of P-SV wave motion. As a results, the conclusion is made as follows: ⒈ the stability and precision of the method are extraordinarily good for the rational and , the value of the method for theory and application is significant; ⒉. The main transmitting direction and velocity for P-SV wave motion change obviously in both time and space domain,and it was taken into account in WMEFENS method, so that the results are extraordinarily good.
Keywords: P-SV wave motion WMEFENS method damping stability near source stability
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No.7686220251153800****
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