Simulation of conjugate heat transfer under conditions of aero-gas-dynamic heating of anisotropic blunt forebodies of hypersonic aircraft

An integrated physical and mathematical model of conjugate heat and mass transfer in super- and hypersonic flows around the blunt anisotropic bodies with determination of their thermal state is proposed. Also proposed is a technique for the numerical solution of the problems for conjugate heat exchange between gas-dynamic near-wall flows and bodies, the thermal conductivity of which is described by the second rank tensor. It is shown that variation of the tensor components of the material external layer thermal conductivity influences significantly the conjugation boundary temperature, which, in its turn, changes the heat flows to the body at the expense of temperature gradient at the conjugation boundary, density and dynamic viscosity.     

Comparison of the empirical thermospheric models and the self-consistent model of the ionospheric plasma

The comparison of the self-consistent theoretical model with empirical models and experimental data is presented. The cause of the discrepancies of these models is discussed.     

Simulation of heat and mass transfer in composite heat protective materials under high temperature conditions

We present a mathematical model, worked out on the basis of the law of binder composite material (CM) decomposition suggested by authors for numerical solution of the heat and mass transfer problems in the heat protective CM under conditions of aero-gas-dynamic heating. The model makes it possible not to consider hard-realizable chemical kinetics of the binder decomposition and can practically be applied to any CM under high temperature conditions. Numerical examples are given.     

首创新型Tiger·tec (R) Silver带来巨大飞跃

继推出世界首创的"PVD Tiger"之后,瓦尔特又向市场推出了全新的产品,即新一代的CVD涂层切削材料Tiger·tec(R)Silver.现场测试和试验结果表明,该切削材料在性能上获得惊人的提高.