Finite element analysis of impact behaviors for biogradable plant fibre bowl with foam cushioning packaging
In order to study the influence of different inlet gas volume fraction to various points pressure within the main pump, and the gas distribution in pump. on the basis of hydraulic design and three-dimensional to nuclear main pump, CFD technology was used to simulate nuclear pump transient working under loss of coolant accident(LOCA) and liquid –gas condition. By simulation various points pressure changes under different times and different gas rate, analysis the influence of inlet gas rate to monitoring points pressure, obtained monitoring points pressure versus time the variation. The results showed that the pressure within the pump is decrease with the pump inlet gas rate increases; Gas rate has little effect to amplitude of the main frequency and gas accumulation is not obvious when the inlet gas volume fraction is less than 0.1; Gas rate has much effect to amplitude of the main frequency and gas accumulation is obvious when the inlet gas volume fraction is more than 0.1.
Technical and Research Center of Fluid Machinery Engineering, Jiangsu University, Zhenjiang 212013,China
Abstract：In order to study the influence of different inlet gas volume fraction to various points pressure within the main pump, and the gas distribution in pump. on the basis of hydraulic design and three-dimensional to nuclear main pump, CFD technology was used to simulate nuclear pump transient working under loss of coolant accident(LOCA) and liquid –gas condition. By simulation various points pressure changes under different times and different gas rate, analysis the influence of inlet gas rate to monitoring points pressure, obtained monitoring points pressure versus time the variation. The results showed that the pressure within the pump is decrease with the pump inlet gas rate increases; Gas rate has little effect to amplitude of the main frequency and gas accumulation is not obvious when the inlet gas volume fraction is less than 0.1; Gas rate has much effect to amplitude of the main frequency and gas accumulation is obvious when the inlet gas volume fraction is more than 0.1.
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