Effect of initial conditions on the mean energy dissipation rate and the scaling exponent

Implications of the expectation that the mean energy dissipation rate [epsi lon] should become independent of viscosity at sufficiently large values of R-lambda, the Taylor microscale Reynolds number, are examined within the f ramework of small-scale intermittency and an adequate description of the se cond-order velocity structure function over the dissipative and inertial ra nges. For nominally the same flow, a two-dimensional wake, but with differe nt initial conditions, values of C(epsilon)drop[epsilon ]L/u'(3), the scali ng exponent and the Kolmogorov constant differ at the same R-lambda.