Numerical investigations on the cavitation of centrifugal pump under rolling conditions
Aiming to give an accurate description of the rolling conditions influence on centrifugal pump cavitation and thermal-hydraulics characteristics,taking rotation and revolution into consideration,centrifugal pump cavitation simulation model under rolling conditions is established with dynamic mesh method,with which simulations for correlating characterist-ics under rolling conditions of different frequency and amplitudes are performed.Results suggest cavitation emerges nearby the inducer blades with a non-uniform spatial influence under rolling conditions,as the temporal evolution during a single period,the cavitation range shrinks after extends with maxima at about three quarters of a rolling period.Subsequently,a rolling conditions influence limit factor for centrifugal pump performance is proposed,which could provide necessary sup-port for centrifugal pump anti-cavitation design under rolling conditions and safety and stability analysis of marine nuclear power platform power system.
rolling conditioncentrifugal pumpcavitationdynamic mesh
万方数据
维普
