We designed an axial fan for servers using computational fluid dynamics (CFD) and numerical optimization. The performance of the fan, namely static pressure rise and efficiency, was calculated using commercial CFD software based on an incompressible Reynolds-averaged Navier-Stokes (RANS) solver. An automatic program developed in-house was used to generate the grids for CFD calculation. Numerical optimization—using a simulated annealing algorithm (SA)—was used for determining the optimized shape of the fan. After optimizing the fan, initial and optimized fan designs were made for experiments using rapid prototyping, and their performances, based on such things as efficiency and noise level, were measured. Results demonstrated that the optimized fan design achieved higher efficiency than the initial design. Multi optimization was also developed for maximizing the fan efficiency and minimizing the casing height. An additional finding was that there was a trade-off between the fan efficiency and casing height.
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ASME 2005 Fluids Engineering Division Summer Meeting
June 19–23, 2005
Houston, Texas, USA
Conference Sponsors:
- Fluids Engineering Division
ISBN:
0-7918-4199-5
PROCEEDINGS PAPER
Development of Autonomous Design Technique for Axial Fans Using Numerical Optimization
Taku Iwase,
Taku Iwase
Hitachi, Ltd., Hitachinaka, Ibaraki, Japan
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Kazuyuki Sugimura,
Kazuyuki Sugimura
Hitachi, Ltd., Hitachinaka, Ibaraki, Japan
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Taro Tanno
Taro Tanno
Japan Servo Company, Ltd., Kiryu, Gunma, Japan
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Taku Iwase
Hitachi, Ltd., Hitachinaka, Ibaraki, Japan
Kazuyuki Sugimura
Hitachi, Ltd., Hitachinaka, Ibaraki, Japan
Taro Tanno
Japan Servo Company, Ltd., Kiryu, Gunma, Japan
Paper No:
FEDSM2005-77389, pp. 65-69; 5 pages
Published Online:
October 13, 2008
Citation
Iwase, T, Sugimura, K, & Tanno, T. "Development of Autonomous Design Technique for Axial Fans Using Numerical Optimization." Proceedings of the ASME 2005 Fluids Engineering Division Summer Meeting. Volume 2: Fora. Houston, Texas, USA. June 19–23, 2005. pp. 65-69. ASME. https://doi.org/10.1115/FEDSM2005-77389
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