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1. Design Optimization of Axisymmetric Endwall in Axial Compressor S-Shaped Duct | |||
Jin Donghai,Zhao Weiguang,Gui Xingmin | |||
Dynamic and Electronic Engineering 06 January 2013 | |||
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Abstract:This paper presents a numerical investigation on the potential aerodynamic benefits of using endwall contouring in a fairly aggressive duct with six struts based on the platform of the endwall design optimization. The platform was built with Adaptive Genetic Algorithm (AGA), Design of Experiments (DOE), Response Surface Methodology (RSM) based on the Artificial Neural Network (ANN) and a 3D Navier-Stokes solver. Visual analysis method based on DOE was used to define the design space and analyse the impact of the design parameters on the target function (response). Optimization of axisymmetric endwall contouring in the duct has been performed and evaluated. The objective was to minimize the total pressure loss. The optimal duct was found to reduce the hub corner separation and suppress the migration of the low momentum fluid. The axisymmetric endwall contouring was shown to suppress the separation and reduce the net duct loss by 22%. | |||
TO cite this article:Jin Donghai,Zhao Weiguang,Gui Xingmin. Design Optimization of Axisymmetric Endwall in Axial Compressor S-Shaped Duct[OL].[ 6 January 2013] http://en.paper.edu.cn/en_releasepaper/content/4510584 |
2. Multiphase Pump Module for Subsea Deployment | |||
Hong-wu Zhu,Shou-sen Zhang,Kong Xiangling | |||
Dynamic and Electronic Engineering 21 May 2009 | |||
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Abstract:Offshore reserves——especially those discovered in deep water ——will be important in meeting future global oil demand .As oil companies step out into deeper waters, operators may discover that finding oil and gas is the easy part ——the real challenge lies in moving produced fluids from the reservoir to the processing facility .Multiphase subsea pumping represents a key development need .While multiphase pumping has been proven onshore ,operators have been hesitant to deploy this technology subsea due to its cost saving. This paper present the state of art in subsea multiphase boosting. This includes the subsea pump, subsea integration, power and control system, and intervention, installation. There are also several examples of subsea multiphase modules as production enabling equipment. Some experience and lessons will be addressed. Although multiphase pumps in most cases are used individually, they may be used in combination with other artificial lift technology like down hole pumps to offer integrated systems with premium reliability and economics. The last part of presentation will be related specifically to the prototype subsea multiphase pump designed by China University of Petroleum (beijing) , the motor-driven pump module is presented for vertical subsea installation on the sea bottom. Details of design like pump parameters, hydraulic parts(impellers, diffusers),cooling system ,bearings ,mixer will be presented. | |||
TO cite this article:Hong-wu Zhu,Shou-sen Zhang,Kong Xiangling. Multiphase Pump Module for Subsea Deployment[OL].[21 May 2009] http://en.paper.edu.cn/en_releasepaper/content/32389 |
3. Influence Of Splitter Blades On The Total Flow Field Of A Low-Specific Centrifugal Pump | |||
Zhang Jin-feng,Yuan Shou-qi,Fu Yuedeng,Yuan Jianping | |||
Dynamic and Electronic Engineering 29 January 2008 | |||
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Abstract:Based on the low-specific speed centrifugal pump model of IS 50-32-160, two impellers are designed with and without splitter blades. The influence of adding splitter blades on the performance of the pump is studied by using numerical method. At first, the measurements of controlling simulation errors are presented, including the building of numerical and physical model, the determination of grid number, difference style and the Iterative residuals. The flow morphology shows that, when adding splitter blades to the impeller, the impeller periphery velocities and pressures become more homogeneous, which can reduce the pressure fluctuation at the area between impeller outlet and volute inlet; the lift head are evaluated at various flow rates, and the flow capacity in the volute is increased, which result in larger operating range; the flow in the part of volute diffuser become more uniform, and the use of it increase. By the performance forecasting, their performance curves are get, and the influence of splitters is presented: the curve of H-Q become more flat, the operating range is extended; the curve of η-Q become widen, and the maximum efficiency move to the larger flow rate, but not at the BEP; And the slope of the P-Q curve increase rapidly, which may result in electrical overload. | |||
TO cite this article:Zhang Jin-feng,Yuan Shou-qi,Fu Yuedeng, et al. Influence Of Splitter Blades On The Total Flow Field Of A Low-Specific Centrifugal Pump [OL].[29 January 2008] http://en.paper.edu.cn/en_releasepaper/content/18456 |
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