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应用计算流体力学(CFD)方法,对脉冲爆震波与涡轮叶片相互作用进行了初步数值模拟.以化学恰当比氢气空气混合物为反应物,仅考虑爆震波对涡轮静止叶片的作用.模拟结果表明:爆震波在通过涡轮叶片后,峰值压力发生衰减,并产生一向上游传播的激波,这有利于缓解爆震波对叶片的脉动冲击作用,但同时在涡轮叶片前缘会产生高压区,使叶片承受的应力很大.在爆震管出口压力变化图中可以看到由于激波经过叶片前缘和爆震室前端壁不断反射形成的多对不断衰减的双波峰.
The CFD method was used to simulate the interaction between pulse detonation wave and turbine blade. The effect of detonation wave on stationary blade of turbine was taken into account only when the chemistry is more appropriate than that of hydrogen-air mixture. The simulation results show that: When the detonation wave passes through the turbine blade, the peak pressure decays and a shock wave propagating upstream is generated, which is beneficial to mitigate the pulsating impact of the detonation wave on the blade. At the same time, a high pressure zone is generated at the leading edge of the turbine blade to bear the blade Of the stress is large.Determination of the pressure at the exit of the detonation tube can be seen as a result of the shock wave through the leading edge of the blade and the front end of the detonation chamber continuous reflection of the formation of pairs of decaying dual-peak.