Performance Analysis of Elliptic-Profile Airfoil Cascade for Designing Reversible Axial Flow Fans

Abdolmaleki, Mohamad; Afshin, Hossein; Farhanieh, Bijan

doi:10.2514/1.j057843

Cited by 7 publications

(3 citation statements)

References 26 publications

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“…At present, there are direct design method and reverse design method for airfoil modification [6][7][8][9].…”

Section: Optimization Design Methods For Retrofittingmentioning

confidence: 99%

Modified optimal design of airfoil for heat dissipation axial flow fan

zhang¹,

sun²,

he³

et al. 2023

Third International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2023)

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Airfoil is the key factor affecting the pneumatic performance of axial flow fan. the higher pneumatic performance of the designed axial flow fan, the more efficiency of axial flow fan, and less power consumption. Fisrt, the Profili software is used to optimize the design of NACA4412 airfoil to improve the lift-drag ratio, and obtains a new high-performance airfoil NACA4412-MOD suitable for heat dissipation axial flow fan. Then the pneumatic performance of the new and old airfoils is calculated by numerical simulation software. The results show that under the given Reynolds number, the lift coefficient of the new airfoil is larger than that of the original airfoil, the resistance is maintained at a considerable level or slightly, the lift-drag ratio increases greatly, and the range of the attack angle for high lift-drag ratio is wider.

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“…At present, there are direct design method and reverse design method for airfoil modification [6][7][8][9].…”

Section: Optimization Design Methods For Retrofittingmentioning

confidence: 99%

Modified optimal design of airfoil for heat dissipation axial flow fan

zhang¹,

sun²,

he³

et al. 2023

Third International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2023)

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“…24 Since the SSTk À v turbulence model does not require a wall function, 24 the factor of y + is adjusted to be around 1 near the wall boundaries of the disk wall. 26,27 The details of the settings for the solution method are summarized in Table 1. It is noted that the iterative implicit procedure continues until the convergence is achieved.…”

Section: Requirements For the Numerical Modelmentioning

confidence: 99%

“…24 Since the SST k − ω turbulence model does not require a wall function, 24 the factor of y + is adjusted to be around 1 near the wall boundaries of the disk wall. 26,27…”

Section: Numerical Proceduresmentioning

confidence: 99%

Vortex shedding modes around oscillating non-uniform double heave plates

Abazari

Alvandi

Behzad

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part M:

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Multiple co-axial heave plates of uniform geometry are attached to offshore platforms for inducing damping and added mass. These effects generally decrease the magnitude of the dynamic response of the platform under applied environmental excitation forces. When spacing between heave plates is decreased the damping and added mass performance are altered due to their strong vortex interaction. A new non-uniform plate configuration is proposed that may create different hydrodynamic characteristics. The modes of vortex shedding around plate edges in a non-uniform arrangement under forced harmonic oscillation are investigated via the CFD method. Furthermore, a new simplified formula for the total theoretical added mass of a general non-uniform double disk is proposed when it is in the zone which vortex interaction take places. The results show that a non-uniform double disk has better hydrodynamic performance as compared to the uniform double configuration for a given spacing. It is also observed that the mode and direction of the vortex shedding are different for uniform and non-uniform arrangements in a given spacing and KC value.

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