The velocity referred here is the effective fluid velocity (at normal incidence to the wire).
Further,  is the normalized voltage defined as
Where  is the output of wire measured at zero velocity of fluid and  measured
at maximum velocity of fluid  The function given above can closely match the
calibration data, but its nonlinearity is a source of computational complexity.
The parameters A,B,C,D and E are obtained by means of an iterative least square
error approach as follows. For any calibration point Equation 10 will produce
an error  given by
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