Toward Improved Rotor-Only Axial Fans-Part I : A Numerically Efficient Aerodynamic Model for Arbitrary Vortex Flow  

Oleh:

Sorensen, D. N. ; Sorensen, J. N.

Jenis: Article from Bulletin/Magazine
Dalam koleksi: Journal of Fluids Engineering vol. 122 no. 2 (2000), page 318-323.
Topik: aerodynamics; rotor; axial fans; aerodynamic model; arbitrary vortex; flow

Ketersediaan

Perpustakaan Pusat (Semanggi) Nomor Panggil: JJ89.1 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

A numerically efficient mathematical model for the aerodynamics of rotor - only axial fans has been developed. The model is based on a blade - element principle whereby the rotor is divided into a number of annular streamtubes. For each of these streamtubes relations for velocity, pressure, and radial position are derived from the incompressible conservation laws for mass, tangential momentum, and energy. The resulting system of equations is non linear and, due to mass conservation and pressure equilibrium far downstream of the rotor, strongly coupled. The equations are solved using the Newton - Raphson method, and solutions converged to machine accuracy are found at small computing costs. Calculations are found to agree well with published measurements.

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