1633 Designing A Small Axial Flow Fan by Computational Fluid Dynamics And Numerical Optimization

Abstract. This paper presents the results of experimental studies of the noise of marine application pump axial flow fan. Axial flow fan is verified by both geometrical and experimental approaches. This section includes grid system used in geometric simulation, and boundary conditions. In order to know the complicate and complex physical features of an axial flow fan, a commercial computational fluid dynamics code, FLUENT, is utilized to perform the flow field analysis, which solves the Navier–Stokes equation using an amorphous finite volume-method. As a commercial computational fluid dynamics code, FLUENT has been extensively used in many turbo machinery applications. In this paper the noise predicted according to geometrical results will be compare with investigational results.

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Numerical optimization of membrane module design and operation for a full-scale submerged MBR by computational fluid dynamics

Bioresource Technology ◽

10.1016/j.biortech.2018.08.089 ◽

2018 ◽

Vol 269 ◽

pp. 300-308 ◽

Cited By ~ 7

Author(s):

Mengmeng Liu ◽

Min Yang ◽

Meixue Chen ◽

Dawei Yu ◽

Jiaxi Zheng ◽

...

Keyword(s):

Fluid Dynamics ◽

Computational Fluid Dynamics ◽

Numerical Optimization ◽

Full Scale ◽

Membrane Module ◽

Module Design

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Fish-friendly design of an axial flow pump impeller based on a blade strike model

Proceedings of the Institution of Mechanical Engineers Part A Journal of Power and Energy ◽

10.1177/0957650919849768 ◽

2019 ◽

Vol 234 (2) ◽

pp. 173-186 ◽

Cited By ~ 1

Author(s):

Qiang Pan ◽

Weidong Shi ◽

Desheng Zhang ◽

BPM van Esch ◽

Ruijie Zhao

Keyword(s):

Fluid Dynamics ◽

Computational Fluid Dynamics ◽

Flow Behavior ◽

Integrated Design ◽

Axial Flow ◽

Hydraulic Performance ◽

Fish Mortality ◽

Computational Fluid Dynamics Analysis ◽

Axial Flow Pump ◽

Flow Pump

With environmental awareness growing in many countries, governments are taking measures to reduce mortality of migrating fish in pumping stations. Manufacturers seek to develop pumps that are less damaging to fish and still provide good hydraulic performance, but little is known about the implications design modifications may have on internal flow characteristics and overall hydraulic performance. In this paper, an integrated design method is proposed that combines a validated blade strike model for fish damage and a computational fluid dynamics method to assess the pump performance. A redesign of an existing, conventional, axial flow pump is presented as an example in this paper. It shows how the design of the impeller blades was modified stepwise in order to reduce fish mortality while its hydraulic performance was monitored. Computational fluid dynamics analysis of the flow near the hub of the highly skewed blades indicated that unconventional design modifications were required to ensure optimum flow behavior. In the final fish-friendly design, the risk of fish mortality has reduced considerably while the hydraulic performance of the pump is still acceptable for practical application.

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Effect of the uneven circumferential blade space on the performance of small axial flow fan

Journal of Thermal Science ◽

10.1007/s11630-016-0890-7 ◽

2016 ◽

Vol 25 (6) ◽

pp. 492-500

Author(s):

Yang Liu ◽

Zhe Lin ◽

Peifeng Lin ◽

Yingzi Jin ◽

Toshiaki Setoguchi ◽

...

Keyword(s):

Axial Flow ◽

Axial Flow Fan ◽

Small Axial Flow Fan

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On the Use of Atmospheric Boundary Conditions for Axial-Flow Compressor Stall Simulations

Journal of Turbomachinery ◽

10.1115/1.1861912 ◽

2004 ◽

Vol 127 (2) ◽

pp. 349-351 ◽

Cited By ~ 36

Author(s):

M. Vahdati ◽

A. I. Sayma ◽

C. Freeman ◽

M. Imregun

Keyword(s):

Fluid Dynamics ◽

Computational Fluid Dynamics ◽

Boundary Conditions ◽

Hysteresis Loop ◽

Axial Flow ◽

Computational Domain ◽

Computational Fluid Dynamics Cfd ◽

Fan Blade ◽

Flow Compressor ◽

Speed Characteristic

This paper describes a novel way of prescribing computational fluid dynamics (CFD) boundary conditions for axial-flow compressors. The approach is based on extending the standard single passage computational domain by adding an intake upstream and a variable nozzle downstream. Such a route allows us to consider any point on a given speed characteristic by simply modifying the nozzle area, the actual boundary conditions being set to atmospheric ones in all cases. Using a fan blade, it is shown that the method not only allows going past the stall point but also captures the typical hysteresis loop behavior of compressors.

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