Turbulence microscale variation due to interaction with shock wave

Limited projections laser speckle tomography of complex flows

“…A phantom 3D distribution of the refractive index was obtained using the results of direct numerical simulation of turbulence obtained by Gerz and Schumann, [19]. Top-2D correlation functions of the deflection angles field, middle-section of 3D correlation functions of density, reconstructed using Erbeck-Merzkirch integral transform, and bottom-section of original 3D density correlation functions in the phantom density field [25].…”

“…The experiments were performed with the unsteady airflow in a shock tube of Essen University, having a quadratic cross-section of 100 Â 100 mm 2 , see [25]. The shock propagates into the low-pressure section where it reflects at the closed end.…”