The paper presents the thermographic studies of unsteady heat fluxes behind a plane shock wave in rectangular 24x48 mm tube test section. Consecutive panoramic visualization plots on streamlined walls after interaction with obstacle fixed channel wall are obtained. duration recorded thermal processes is up to 40 milliseconds passage. heating and cooling chamber by supersonic flow visualized usi...

A mathematical approach to investigate particle acceleration at shock waves moving at arbitrary speed in a medium with arbitrary scattering properties was first discussed in (Vietri 2003; Blasi & Vietri 2005). We use this method and somewhat extend it in order to include the effect of a large scale magnetic field in the upstream plasma, with arbitrary orientation with respect to the direction o...

Based on the new theory of MVG to reduce separation caused by shock boundary layer interaction (SBLI), a new optimization method is presented in this paper. The key issue is to generate a proper momentum deficit zone, which can generate a strong shear layer and further strong vortex rings frequently, in front of shock. Several artificial momentum deficit zones (low speed streaks) are tested by ...

Given a family of discrete shocks φ of a monotone scheme, we prove that the discrete shock profile with rational shock speed η is asymptotically stable with respect to the l1 topology ‖ · ‖1: if u0 − φ ∈ l1, then ‖un − φ·−nη‖1 → 0 as n → ∞ under no restriction conditions of the initial data to the interval [inf φ, supφ]. The asymptotic wave profile is uniquely identified from the above family b...

An explanation is offered of the morphology of the entry wound caused by a firearm projectile, of the projectile path through the body, and of the exit wound. Special consideration is given to pressure and shock waves caused and their relation to the speed of the projectile (below, equal to or superior to Mach1). The action of both pressure and shock waves is very significant, more so than ts a...

A high-speed projectile in combustible gas can initiate and stabilize a detonation wave under suitable conditions [1]. In this paper, numerical simulations of projectile induced detonation waves are presented. Using a one-step irreversible reaction model, the transition from shock-induced combustion to stabilized oblique detonation is observed via numerical simulations. An analysis of this tran...

The viscous effects on unsteady shock wave propagation are investigated by numerical solution of the Boltzmann model kinetic equations. The kinetic equations are solved for two unsteady non-equilibrium flow problems, namely, the one-dimensional Riemann problem and a two-dimensional viscous shock-tube. The numerical method comprises the discrete velocity method in the velocity space and the fini...