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increasing initial residuals of U.x and h when shock wave reachs the wall

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Old   June 26, 2013, 12:55
Default increasing initial residuals of U.x and h when shock wave reachs the wall
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In my simulation there is a shock that goes near a wall and reflects.when it turns near it residuals of U.x and h increases and after hitting and reflecting reduce again(as in image can be seen).why it occurs? is it an indicator of existence of any issue or looks normal?
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