Higher order derivative correlations of velocity and temperature in isotropic and sheared numerical turbulence
Abstract
Through a combination of small scale statistics and flow visualization it is shown that the small scales of a numerically generated turbulent flow are strongly aligned around vortex tubes. Movies of the time developing flow will be used to illustrate the nature of these structures. An inertial subrange is found with a Kolmogorov constant, alpha, equal to 2.45. This is consistent with simulated and measured values for the skewness, but disagrees with experimental values for the Kolmogorov constant, which usually range between 1.4 to 1.7.
 Publication:

4th Symposium on Turbulent Shear Flows
 Pub Date:
 1984
 Bibcode:
 1984stsf.procQ..14K
 Keywords:

 Isotropic Turbulence;
 Numerical Flow Visualization;
 Turbulent Flow;
 Flatness;
 Flow Velocity;
 Kolmogoroff Theory;
 NavierStokes Equation;
 Skewness;
 Strain Rate;
 Temperature Dependence;
 Fluid Mechanics and Heat Transfer