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Unformatted text preview: in the streamwise direction (in our case, the x-direction). The drag force can be determined by integrating the x-component of the pressure force around the cylinder: F D = 2DL/360Pcosd from 0 degrees to 180 degrees, where D and L are the diameter and length of the cylinder, respectively, and Pcos is the x-component of the pressure around the cylinder. The integration is from 0 to 180 degrees because the flow about the whole cylinder is assumed symmetric. The integral cannot just be solved as it is because every angle would have to be measured. Instead a trapezoidal approximation will have to be used to approximate the integral in increments of 10 degrees. Also the boundary layer will have to be extrapolated so that the calculations represent a uniform profile....
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- Spring '08