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Thesis Advisor王中礼
Degree Grantor中国科学院研究生院
Other AbstractGas-solids two-phase flow in standpipe was systematically studied based on the theories of multiphase flow and mechanics of loose particles bulk. The formation of free arch was analyzed and an equation for predicting minimum pipe diameter for smooth flow was proposed. It has been found that the "flood" in fluidized flow is the limit of flow regime. A modified terminal velocity equation was derived. The derivation considered both the frictional losses and the void fraction. With a micro-computer DPS-85 the pressure profiles for a gas-solid mixtures downflow in a vertical standpipe (I.D. 36mm, effective height 2.37m) were investigated. It has been identified that the pressure drop of moving bed can be calculated with Ergun equation. The experimental results show that the frictional pressure losses for dense phase flow can be neglected and the frictional pressure losses for dilute phase flow can be described using the correlational equation of the solid-wall friction factor presented in this paper. The influence of aeration on flow regime was also analyzed. A method was proposed for calculating solid and gas flow rate through orifice in dense phase flow.
Document Type学位论文
Recommended Citation
GB/T 7714
傅晓安. 垂直立管中气固两相流动的动力学及稳定性研究[D]. 中国科学院研究生院,1989.
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垂直立管中气固两相流动的动力学及稳定性研(2595KB) 限制开放CC BY-NC-SAApplication Full Text
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