|
|
|
Development of an axial-type fan with an optimization
method |
| Chong-hyun CHO1,Soo-yong CHO1,Chaesil KIM2, |
| 1.900 Gajwa-dong, Department
of Mechanical and Aerospace Engineering, Gyeongsang National University,
Jinju 660-701, the Republic of Korea; 2.9 Sarim-dong, Department
of Mechanical Engineering, Changwon National University, Changwon
641-773, the Republic of Korea; |
|
|
|
|
Abstract An axial-type fan that operates at a relative total pressure of 671Pa and a static pressure of 560Pa with a flowrate of 416.6m3/min is developed using an optimization technique based on the gradient method. Prior to the optimization of the fan blade, a three-dimensional axial-type fan blade is designed based on the free-vortex method along the radial direction. Twelve design variables are applied to the optimization of the rotor blade, and one design variable is selected for optimizing a stator which is located behind the rotor to support a fan-driving motor. The total and static pressure are applied to the restriction condition with the operating flowrate on the design point, and the efficiency is chosen as the response variable to be maximized. Through these procedures, an initial axial-fan blade designed by the free vortex method is modified to increase the efficiency with a satisfactory operating condition. The optimized fan is tested and compared with the performance obtained with the same class fan to figure out the optimization effect. The test results show that the optimized fan not only satisfies the restriction conditions but also operates at the same efficiency even though the tip clearance of the optimized fan is greater than 30%. The experimental and numerical tests show that this optimization method can improve the efficiency and operating pressures on axial-type fans.
|
| Keywords
axial-type fan
gradient method
free-vortex method
design variable
total pressure
static pressure
operating flowrate
|
|
Issue Date: 05 December 2009
|
|
|
Eck B. Fans:Design and Operation of Centrifugal, Axial-Flow and Cross-Flow Fans. Oxford: TranslationPergamon Press, 1973
|
|
Wright T. Lowpressure axial fans. In: Schetz J A, Fuhs A E, eds. Handbook of Fluid Dynamics andFluid Machinery. 3: Application of Fluid Dynamics. Chichester: Wiley, 1996, 2340―2356
|
|
Wallis R A. Axial Flow Fans: Design and Practice, New York: Academic Press, 1961
|
|
Wallis R A. Axial Flow Fans and Ducts. New York: John Wiley & Sons Inc, 1983
|
|
Sorensen D N, Thompson M C, Sorensen J N. Toward improved rotor-only axial fans―Part II:Design optimization for maximum efficiency. Journal of Fluids Engineering, 2000, 122(2): 324―329
doi: 10.1115/1.483260
|
|
Egorov I N, Shmotin Y N, Fedechkin K S. Increasing of axial fan efficiency basing on optimizationtechnology. 6th World Congresses of Structuraland Multidisciplinary Optimization, Rio de Janeiro, Brazil, 2005
|
|
Lee S Y, Kim K Y. Design optimization of axialflow compressor blades with three-dimensional Navier-Stokes solver. ASME Paper GT-2000-0488, 2000
|
|
Seo S J, Choi S M, Kim K Y. Design of an axial flow fan with shape optimization. The KFMA Annual Meeting, 2004, 578―582
|
|
Cho S Y, Choi B S, Oh J H. An experimental study on the effect of vortex-type appliedto design an axial flow fan. Journal ofFluid Machinery, 1999, 2(3): 7―16
|
|
Visual DOC 6.0. VanderplaatsR&CD Inc, 2006
|
|
KS B6311. TestingMethods for Turbo-Fans and Blowers, 2001
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
