摘要:不同偏转角条件下偏流板的流场特性存在较大的差异，为了确定适当的偏转角θ，文中采用流固耦合传热算法分别对θ为30°、45°、60°、75°时的流场特性进行数值模拟。结果表明:θ=45°时，偏流板周围的设备得到有效的保护。θ=30°时，尾喷管喷出的部分高温燃气经偏流板导流向偏流板后方流动对板后的设备产生影响。θ=60°、75°时，高温燃气回流对偏流板前的设备产生影响。因此45°为相对理想的偏转角度。

In order to determine the appropriate deflection angle θ which can substantially influence the flow field around the jet blast deflector ( JBD) ，the flow field was numerically simulated at different deflection angle by the fluid-solid conjugate heat transfer method． The results show that the effect of the JBD separation is marked and the devices around the JBD are protected effectively at the 45°deflection angle． At the 30°deflection angle，some hot exhaust that is separated by the JBD flow behind and has a bad effect on the devices behind the JBD． At the 60°and 75°deflection angles，the forward flow of the hot exhaust will affect the devices in front of the JBD． So the appropriate deflection angle θ is 45°．