Occurrence of Regions with Temperature and Concentration Gradients TCG

6 Occurrence of Regions with Temperature and Concentration Gradients (TCG) 

Another example of gas temperature growth behind the shock wave relates to pressure wave penetration into an obstructed space. The obstruction may result from particles spattered into the space (Fig. 8.1 lb) or obstacles located on the duct walls (Fig. 8.1 Ic). Following the temperature jump from Tq to T, behind the wave front, the temperature grows like T x) due to friction and heat exchange with other objects in the continuum. 

One more example of TCG formation is the case of jet flow of heated blast products (or initial mixture) out off a duct to an open space (Fig. 8.1 Id). In the boundary mixing layer 3 the non-uniformity of the temperature and injection substance concentration are formed at the cross-sections between the flow core 1 and the environment 2 around radius r at distances Xi and X2. 

8 Shock-Free and Spontaneous Initiation of Explosive Regimes 

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