Shaft Power Matching and Performance Prediction for Contra-Rotating Axial Flow Fans

Wang, Weixiong; Li, Song; Zhu, Zhenli; Huang, Dongtao; Zhu, Konglin

doi:10.1080/10789669.2007.10390948

Cited by 2 publications

(2 citation statements)

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“…The results showed larger pressure rise and efficiency with lower rotation rate at a given power consumption. Cho et al 4 showed how to design rotor blades and Wang et al 5 investigated different blade pitch angles to validate and improve recommendations for shaft power matching of CRFs. Another focus has been on the reduction of sound emission, see Shin et al 6 and Li et al 7 Grasso et al 8,9 focused on the reduction of the mechanical stresses and broadband noise scattered from the trailing-edge of the blades.…”

Section: Introductionmentioning

confidence: 99%

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Experimental and numerical investigation of a gearless one-motor contra-rotating fan

Heinrich

Friebe

Schwarze

2016

Proceedings of the Institution of Mechanical Engineers, Part A:

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A gearless one-motor concept for contra-rotating fans is presented in this article. The rotors are mounted to an electric motor using only one shaft. The coupling between both rotors is realised by utilising the conservation of angular momentum. The contra-rotating fans has a diameter of 200 mm at a design speed of 2100 min À1 for the first stage and 1200 min À1 for the second stage. It has been designed and investigated through a series of experiments by the Institute of Air Handling and Refrigeration in Dresden. The performance map and 2D particle image velocimetry measurements have been conducted. Numerical models for 3D quasi-steady state and transient simulations have been implemented and carried out by the Institute of Mechanics and Fluid Dynamics. The results show a good agreement between the quasi-steady, the transient simulations and the experiment. However, when close to stall, the time-resolved simulations show a superior performance compared with steady-state computations.

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Section: Introductionmentioning

confidence: 99%

“…4 showed how to design rotor blades and Wang et al. 5 investigated different blade pitch angles to validate and improve recommendations for shaft power matching of CRFs. Another focus has been on the reduction of sound emission, see Shin et al.…”

Section: Introductionmentioning

confidence: 99%