Experimental and numerical investigation of the flow over v-shaped flame holder

The paper deals with experimental investigation accompanied by numerical simulations of the flow over conventional V-shaped flame holder. The numerical simulations aimed on optimization and design of classical flame holder for the parameters which realized in T-325 ITAM SB RAS wind tunnel (stagnation pressure and temperature 0.7bar and 295K, respectively, and Mach number of 0.55) have been performed in unsteady statement (URANS) using two-dimensional approach. The computations have been conducted by means of commercial software ANSYS FLUENT using the different embedded models of turbulence with varying of approximation scheme order for time/flow/turbulence terms. The computational domain was built basing on structured mesh. Basing on the numerically data obtained the experimental model of flame holder was designed and manufactured. The experimental investigations were carried out in supersonic wind tunnel T-325. The main experimental techniques were: mean and unsteady surface pressure measurements in forward stagnation point in middle spanwise section using high frequency pressure probe PCB; base pressure measurements in the wake of the model; measurements of velocity fields in midspan section by PIV. The comparison of the experimental results with the computationally data obtained is done.