Numerical investigations of a hydrogen impinging flame with different finite-rate chemical kinetic mechanisms

► The flame dynamics is different in the deflection zone near the stagnation region. ► Reduced models develop less vortical and wrinkled flames. ► The excess of combustion heat-release has a dissipative effect on the flow field. ► Simplified mechanisms show a poor prediction of the flame/turbulence interactions. ► Chemical kinetics has an important effect on species formation and destruction.