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U s cos
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With this transformation Ms3 and Mn5 are zero by def-
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where s/ x cos , s/ y sin , n/ x
sin , and
n/ y cos from Fig. A1. The final relationship need-
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1/Rs , where Rs(x, y, t) is the streamwise
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0.) Note that once values of
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useful because one retains the computational ease of
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working in a standard xy coordinate system and with
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