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Journal Article 5

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2022 1

2008 3

2007 1

Keywords

Computational 2

B-spline 1

Betz limit 1

Comparison 1

aerodynamics 1

centrifugal compressor 1

computational fluid dynamics (CFD) 1

corresponding Interactive 1

different mechanism 1

different stagger 1

diffuser stagger 1

diffuser-augmented wind turbine (DAWT) 1

diffuser/nozzle Si/Glass 1

diffuser/nozzle micropump 1

flow 1

frequency 1

incidence 1

influence 1

phenomenon 1

pressure recovery 1

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Investigation into the influence of diffuser stagger angles on the flow field and performance of a centrifugal

XI Guang, DING Haiping, YUAN Minjian, ZHANG Chunmei, ZHOU Li

Frontiers in Energy 2007, Volume 1, Issue 3, Pages 290-294 doi: 10.1007/s11708-007-0041-7

Abstract: The performance graphs of a centrifugal compressor under different diffuser stagger angles were measured, and the influence of different stagger angles of vanes on the stage performance as well as flow fieldThe results show that the performance graph shifts when the diffuser stagger angle is altered; the influenceLarge scale vortices appear on the diffuser vane under larger incidence.An optimal diffuser stagger angle should exist at a specified flow rate to make the characteristic of

Keywords： diffuser stagger incidence different stagger flow centrifugal compressor

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Piezoelectric diffuser/nozzle micropump with double pump chambers

WANG Wei, ZHANG Ying, TIAN Li, CHEN Xiaojie, LIU Xiaowei

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 4, Pages 449-453 doi: 10.1007/s11465-008-0076-4

Abstract: To eliminate check valve fatigue and valve clogging, diffuser/nozzle elements are used for flow rectificationin a valveless diffuser/nozzle micropump instead of valves.In this paper, a diffuser/nozzle Si/Glass micropump with two pump chambers by IC and MEMS technologyPump-chambers and diffuser elements are fabricated by the anisotropic KOH-etch technique on the silicone

Keywords： diffuser/nozzle Si/Glass phenomenon rectification diffuser/nozzle micropump frequency

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Numerical analysis of rotating stall characteristics in vaneless diffuser with large width-radius ratio

GAO Chuang, GU Chuangang, WANG Tong, DAI Zhengyuan

Frontiers in Energy 2008, Volume 2, Issue 4, Pages 457-460 doi: 10.1007/s11708-008-0071-9

Abstract: neglected and inlet jet-wake velocity patterns are prescribed, was applied to simulate one vaneless diffuserThe impact of diffuser length, impeller blade number, etc. on the rotating stall was analyzed.

Keywords： Comparison Computational two-dimensional influence different mechanism

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Multi-objective optimization of a 3D vaneless diffuser based on fuzzy theory

GAO Chuang, GU Chuangang, WANG Tong, SHU Xinwei

Frontiers in Energy 2008, Volume 2, Issue 1, Pages 66-70 doi: 10.1007/s11708-008-0006-5

Abstract: An optimization model based on fuzzy theory was set up and the corresponding Interactive modified simplex (IMS) method was developed to solve it. Both static pressure recovery and total pressure loss were considered in the model. Computational fluid dynamics (CFD) method was applied to solve the Reynolds-Averaged Navier-Stokes equation (RANS) and to find flow field distribution to get the value of the object function. After receiving the new shroud curve, grid movement and redrawing technology were adopted to avoid grid-line crossing and negative cells. The shroud curve was fitted with B-spline. The optimized results concur with the results reported in references.

Keywords： Computational pressure recovery B-spline technology corresponding Interactive

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Characterization of aerodynamic performance of wind-lens turbine using high-fidelity CFD simulations

Islam HASHEM, Aida A. HAFIZ, Mohamed H. MOHAMED

Frontiers in Energy 2022, Volume 16, Issue 4, Pages 661-682 doi: 10.1007/s11708-020-0713-0

Abstract: The wind-lens typically comprises a diffuser shroud coupled with a flange appended to the exit peripherywind through the turbine rotor owing to the creation of a low-pressure zone downstream the flanged diffuserthe effect of change of some design parameters such as length, area ratio and flange height of the diffuser

Keywords： shroud diffuser-augmented wind turbine (DAWT) Betz limit aerodynamics computational fluid dynamics (CFD