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研究了高、中等Reynolds数条件下,稀相含灰气体绕球体的定常超声速流动问题,对于物体迎风面前表面上发生颗粒沉积的情况,研究了由于颗粒引起的驻点热流增加,给出了传热增强的最大值,指明了驻点热流的增加取决于流动Re数、颗粒惯性参数、气固比热之比以及物面温度等控制参数。
The problem of constant supersonic flow around a sphere with dilute phase ash-containing gas under high and medium Reynolds conditions is studied. For particles deposited on the front windward surface of an object, the increase of stagnation point heat flow caused by the particles is studied. The maximum value of heat enhancement indicates that the increase of stagnation point heat flow depends on the control parameters such as flow Re number, particle inertia parameter, gas-solid specific heat ratio and object surface temperature.