Simulation of Homogeneous Turbulence Subjected to Plane Strain

Direct numerical simulation is used at a resolution of 512$^{3}$ to investigate the behavior of turbulence subjected to rotation, as well as plane and axi-symmetric strain. The initial isotropic turbulence is generated by the stirring action of many small randomly placed cubes, rather than imposed as an initial condition. Anisotropic turbulent structure is then generated by rotation, dimensionless plane strain or axi-symmetric strain. Multiple simulations are used to investigate the influence of initial conditions, rotation rate, strain rate and Reynolds number on the strained turbulence structure and its subsequent anisotropic decay.