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what reason for AGARD445.6 flutter Calculation is divergence (MPCCI+FLUENT+ANSYS)

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Old   February 10, 2012, 11:07
Default what reason for AGARD445.6 flutter Calculation is divergence (MPCCI+FLUENT+ANSYS)
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Structural Mechanics Calculation vibration curve is smooth and convergence, but about 0.2s ,the vibration curve burr is appear, CFD aerodynamic burr is appear, AGARD445.6 wing's trailing edge is wave form. then this condition is gradually serious, last CFD Calculation is divergence for grid vomlue is negative.
who can give me any suggestion? It is very nice of you to help me!
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