Simulation of Flow Field and Performance Analysis of Cross-Flow Fan

Hu, Junwei

doi:10.3901/jme.2004.04.062

Cited by 4 publications

(2 citation statements)

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“…However, there was an obvious velocity variation at bottom of the outlet plane under the same flail tip clearance. This was similar to the results of decreased tip clearance would increase the velocity at outlet, found by Hu et al[28] in a study of cross-flow fan.…”

supporting

confidence: 91%

Numerical Simulation of the Effects of Design Parameters on the Performance of Tractor Powered Flail Choppers

Zhang

McHugh

et al. 2019

Computer and Computing Technologies in Agriculture XI

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Several design parameters of flail chopper were studied under a wide range of field and crop conditions to improve chopper performance. However, the effects of parameters on the internal straw flow characteristics that influence straw chopping and spreading performance are still unknown. In this paper, Computational Fluid Dynamics (CFD) were used to analyze the influence of three operating parameters (rotor speed, forward speed and hood clearance) and two structural parameters (fan blade number and flail tip clearance) on the flow characteristic in the tractor powered flail chopper. The pressure contours, maximum negative pressure and flow rate at the machine inlet were considered in the analysis of feeding performance. Velocity at 21 sampling points, area weighted and maximum velocities at the outlet were also considered for straw spreading performance. Streamlines from three sampling sections were analyzed for straw flow-ability.

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supporting

confidence: 91%

Numerical Simulation of the Effects of Design Parameters on the Performance of Tractor Powered Flail Choppers

Zhang

McHugh

et al. 2019

Computer and Computing Technologies in Agriculture XI

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“…Because the heat-transfer zone is in the front of airflow, the import airflow of the cross-flow fan should not be uniform [3]. But in many literatures [4][5][6][7][8][9][10][11][12] it is neglected, especially in the isothermal operating condition. The most impossible causation is the indistinct conception to the essence of the flow; the other partial cause is the computational capacity of the computer practically.…”

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confidence: 99%

Internal flow numerical simulation of a cross‐flow fan in refrigerant operating condition using user‐defined functions

Yu¹,

Gan²,

Wang³

et al. 2011

Numerical Methods in Fluids

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SUMMARYIn the paper, a cross-flow fan in refrigerant operating condition is systematically simulated using userdefined functions. Three-dimensional simulations are acquired with Navier-Stokes equations coupled with k-ε turbulence model, and internal flow characteristics of an indoor split-type air conditioner are obtained, which is mainly composed of cross-flow fan and heat exchanger. It has systematically been simulated in the isothermal flow condition that the performance of cross-flow fan may be reduced easily with dry or humid air, and in the refrigerant operating condition in which user-defined functions are applied to the humid air, considered as a mixture of dry air and vapor. A density-modulated function is adopted to deal with the condensation of the vapor at the heat-transfer region approximately. The results show flow mechanism of the two gas-phase flow, including phase-vary process. The distribution of the parameters is not uniform at the inlet of the machine, the intensity and position of pressure and velocity vary along the axial direction of the fan, the distribution of vapor volume fraction and turbulent intensity in heat-transfer region is obtained, and the external characteristic data of the indoor machine are obtained and analyzed. Compared with the experimental data, the calculated characteristic curves and designed parameters are on target. c British Crown

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A study of the aerodynamic and acoustic performance of an indoor unit of a DC-inverter split air-conditioner

Wu¹,

Liu²,

Pan³

2012

Applied Acoustics

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Simulation of Flow Field and Performance Analysis of Cross-Flow Fan

Cited by 4 publications

References 0 publications

Numerical Simulation of the Effects of Design Parameters on the Performance of Tractor Powered Flail Choppers

Numerical Simulation of the Effects of Design Parameters on the Performance of Tractor Powered Flail Choppers

Internal flow numerical simulation of a cross‐flow fan in refrigerant operating condition using user‐defined functions

A study of the aerodynamic and acoustic performance of an indoor unit of a DC-inverter split air-conditioner

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