[Rabsyboi]

Hi Guys,

I currently preparing a paper on secondary currents and am having some difficulty with some data calculations. The data I have has been measured using LDA equipment in a rectangular flume. I have accurate data for u and v components but need to calculate the w component mathematically.
I have been told that this is possible using the equation shown in the attachment.
Apparently the differential is calculated using a standard five-point center-difference operator, and the integral was computed from the trapezium rule assuming that the cross-stream velocity at the wall was zero.
I hope that someone on here can make sense of this as it is really doing my head in.
Thanks for your help!