Numerical study on the optical inhomogeneity of free heated jet flowfield

Two dimensional laminar flow N-S equations are solved to simulate the large scale vortical structures in heated jet flow field, and the optics path lengths at different streamwise positions were computed. The results indicated that the features of the vortical structure induced different optical aberration. Because of the existence of the large scale vortical structures the optical inhomogeneity of turbulent flowfield was educed.