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气动特性是燃气轮机惯性级分离装置工作性能的宏观指标,进气通道的气动性能越差,压气机效率、压比及燃气轮机的功率越低。对燃气轮机一种惯性级导叶进行气动损失特性研究,分别对进口流速工况为2.0、2.5、3.0、3.5、4.0m/s的流道进行研究。首先从数值模拟的角度对二维流道流场模拟,得出数值模拟气动损失数据。然后从试验研究的角度对该惯性级导叶气动损失特性测试。分析数值模拟与试验研究的结果,得出:不同进口流速下,两者总压损失都近似成线性关系;气动阻力损失系数都基本保持不变,但两者存在一定的偏差;数值建模参数假设的误差是导致偏差的主要原因。
The aerodynamic characteristic is a macroscopic index of the working performance of the gas turbine inertial-stage separation device. The poorer the aerodynamic performance of the intake passage, the lower the compressor efficiency, the pressure ratio and the power of the gas turbine. The aerodynamic loss characteristics of a gas turbine inertial guide vane were studied. The flow channels with inlet velocities of 2.0, 2.5, 3.0, 3.5 and 4.0 m / s were studied respectively. First of all, numerical simulation of two-dimensional flow field flow simulation, numerical simulation of aerodynamic losses data. Then the aerodynamic loss characteristics of the guide vanes of this inertial stage were tested from the perspective of experimental study. The results of numerical simulation and experimental study are analyzed. It is concluded that the total pressure loss of the two is approximately linear under different inlet velocities, and the aerodynamic drag loss coefficients remain basically unchanged, but the two have some deviation. The numerical modeling parameters The assumed error is the main cause of the deviation.