Shape Optimization of Forward-Curved-Blade Centrifugal Fan with Navier-Stokes Analysis

[+] Author and Article Information
Kwang-Yong Kim, Seoung-Jin Seo

Department of Mechanical Engineering, Inha University, Incheon 402-751, Republic of Korea

J. Fluids Eng 126(5), 735-742 (Dec 07, 2004) (8 pages) doi:10.1115/1.1792256 History: Received October 27, 2003; Revised April 04, 2004; Online December 07, 2004
Copyright © 2004 by ASME
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Geometry of a forward-curved-blade centrifugal fan
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Grid system of the impeller block, diagram of forces acting on the cell, and velocity triangles
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Surface grids of computational domain
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Comparisons of computational results with measurements at the impeller exit (Seo, Kim, and Kang 5)
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Sensitivity analyses for reference and first optimum shapes
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Velocity vectors in reference and first optimum shapes (S-S cross section in Fig. 1)
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Inactive zones at the exit of impeller for reference and first optimum shapes
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Efficiency versus relative size of inactive zone
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Circumferential variations of momentum fluxes in scroll: (a) CMt, (b) CMs
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Correlations between efficiency and averaged momentum fluxes in the scroll: (a) CMt, (b) CMs
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Correlations between static efficiency and averaged momentum fluxes in the scroll: (a) CMt, (b) CMs



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