When the aircraft takes off and lands,the tires would rub against the road surface to generate instanta-neous high temperature.Under the action of heating and high-speed shearing,the rubber would form a build-up of rubber attached to the runway surface,which would affect the aircraft operation.Domestic airports generally removed the rubber regularly by high-pressure water.In order to improve the rubber removal efficiency and airport security,based on the cavitation theory,the design of the rubber removal nozzle was improved.A center body shearing com-pound cavitation nozzle was designed,and the CFD software was used to analyze and optimized it in a non-submerged flow field,and compared it with a conical nozzle,a center body nozzle and an angled nozzle.The research results show that the cavitation effect and the erosion performance of the impact surface of the center body shear composite cavitati-on nozzle are greatly improved compared with the original nozzle.The segment length is 8mm,the diameter of the cen-ter body is 3mm,and the optimal target distance is 15-25mm.
维普
万方数据