In order to study tip clearance of variable inlet guide vane for distributed energy gas turbine,a numerical simulation of different variable inlet guide vane tip clearance was carried out based on the transonic stage of an axial compressor by using NUMECA software,the simulation method and the influence of variable inlet guide vane tip clearance on compressor performance were analyzed.The results show that the neglect of the variable inlet guide vane partial tip clearance decreases the blocking mass flow and increases the high load efficiency.The total pressure loss in the partial tip clearance area of the variable inlet guide vane is increased,the inlet attack angle of the downstream rotor is increased,and the shock wave structure in the rotor channel is changed near the blocking condition.It is suggested that the partial clearance structure of the variable inlet guide vane should not be ignored in three-dimensional simulation.
维普
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