Numerical Simulation of Vortex Evolution Based on Adaptive Wavelet Method
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摘要: 该文考察了小波自适应方法用于涡旋运动的演化过程.首先,通过两个初边值问题,说明小波方法具有可精度可控和局部结构自动捕捉的能力.然后,计算了涡旋的合并过程,结果表明,小波方法可以准确高效的应用于流动涡旋的演化预测,进而,讨论了小波方法在湍流数值模拟中的应用.Abstract: The application of wavelet method to vortex motion's prediction was investigated.First,the wavelet method was used to solve two initial boundary problems so as to verify its abilities of controlling numerical errors and capturing local structures.Then,the adaptive wavelet method was used to simulate the vortex emerging process.The results show that the wavelet method can predict the vortex evolution precisely and effectively.The application of this method to turbulence is suggested at last.
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Key words:
- adaptive wavelet /
- vortex evolution /
- coherent structure /
- vorticity equation /
- turbulence
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