Finding Re given the taylor-Re
 

Hi, Im trying to simulate isotropic homogenous turbulence problem using a psuedospectral scheme. I am given the initial velocity field(calculated from the specified energy spectrum) and the taylor reynolds number.
Im having problems in computing the Re number to be specified in my equation.
Used Re = (2*pi/lambda)*TaylorRe, found did not match very well. can any one help. Thanks in advance.