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TECHNICAL PAPERS

Effects of Guide-Vane Number in a Three-Dimensional 60-Deg Curved Side-Dump Combustor Inlet

[+] Author and Article Information
Tong-Miin Liou, Hsin-Li Lee

Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu, Taiwan 30043, Republic of China

Chin-Chun Liao

Design Department, First International Computer, Inc., Portable Computing Group, Taiwan

J. Fluids Eng 123(2), 211-218 (Dec 20, 2000) (8 pages) doi:10.1115/1.1358843 History: Received May 05, 2000; Revised December 20, 2000
Copyright © 2001 by ASME
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References

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Eustice,  J., 1911, “Experiments on Stream-Line Motion in Curved Pipes,” Proc. R. Soc. London, 85, pp. 119–131.
Agrawal,  Y., Talbot,  L., and Gong,  K., 1978, “Laser Anemometer Study of Flow Development in Curved Circular Pipes,” J. Fluid Mech., 85, pp. 497–518.
Humphrey,  J. A. C., Taylor,  A. M. K. P., and Whitelaw,  J. H., 1977, “Laminar Flow in a Square Duct of Strong Curvature,” J. Fluid Mech., 83, pp. 509–527.
Humphrey,  J. A. C., Whitelaw,  J. H., and Yee,  G., 1981, “Turbulent Flow in a Square Duct with Strong Curvature,” J. Fluid Mech., 103, pp. 443–463.
Taylor,  A. M. K. P., Whitelaw,  J. H., and Yianneskis,  M., 1982, “Curved Ducts with Strong Secondary Motion: Velocity Measurements of Developing Laminar and Turbulent Flow,” ASME J. Fluids Eng., 104, pp. 350–359.
Chang,  S. M., Humphrey,  J. A. C., and Modavi,  A., 1983, “Turbulent Flow in a Strongly Curved U-Bend and Downstream Tangent of Square Cross-Sections,” Physico-Chemical Hydrodynamics, 4, pp. 243–269.
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Liou,  T. M., and Liu,  C. H., 1986, “An Investigation of Pressure Loss and Mean Velocity Field in a Curved Square Duct with Different Reynolds Numbers,” Journal of the Chinese Society of Mechanical Engineers, 7, No. 4, pp. 243–251.
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Kotb,  N. A. E., Mokhtarzadeh-Dehghan,  M. R., and Ward-Smith,  A. J., 1988, “A Numerical Study of Laminar and Turbulent Flows in a Two-Dimensional Bend with or without a Guide Vane,” Int. J. Numer. Methods Eng., 26, pp. 245–262.
Liou,  T. M., and Liao,  C. C., 1995, “Flows in a Curved Combustor Inlet with and Without a Guide Vane,” J. Propul. Power, 11, No. 3, pp. 464–472.
Liou,  T. M., and Wu,  S. M., 1988, “Flowfield in a Dual-Inlet Side-Dump Combustor,” J. Propul. Power, 4, No. 1, pp. 53–60.
Tsai,  M. K., and Liou,  T. M., 1991, “Study of Flow Induced by Nonuniform Lateral Injection,” J. Propul. Power, 7, No. 5, pp. 668–677.
Liao, C. C., 1997, “A Study of Curved Duct Flows Associated with Side-Dump Combustor and Artery Disease,” Ph.D. thesis, Department of Power Mechanical Engineering, National Tsing Hua University, Hsin-Chu, Taiwain.
Liou,  T. M., and Kao,  C. F., 1988, “Symmetric and Asymmetric Turbulent Flows in a Rectangular Duct with a Pair of Ribs,” ASME J. Fluids Eng., 110, pp. 373–379.
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Figures

Grahic Jump Location
Secondary mean flow pattern in terms of resultant velocity vectors and U, Ω, and k contours at three selected cross-sectional planes for two-vane case (Uncertainty in (V2+W2)1/2/Uref: less than ±2.8 percent, in ΩDh/Uref: less than ±8.6 percent, in k/Uref2: less than ±7.4 percent)
Grahic Jump Location
Streamwise variation of longitudinal mean velocity along Rh*≈−0.96 in A-1 passage at various Reynolds numbers (Uncertainty: see Fig. 2 caption)
Grahic Jump Location
Variations of separation length with Reh and Res, and variation of Resc with product of radius ratio and aspect ratio (Uncertainty in Xh,sep*: less than ±5.2 percent)
Grahic Jump Location
Absolute longitudinal mean velocity differences between inner and outer walls for the four cases examined (Uncertainty in |ΔUi-0|/Uref: less than ±3.2 percent, in normalized longitudinal position ±0.6 percent)
Grahic Jump Location
Profiles of central-plane (Zh*=0) longitudinal mean velocity and turbulence intensity at Xh**=1.11 for the four cases examined (Uncertainty in u2/Uref: less than ±3.8 percent, in U/Uref: see Fig. 2 caption)
Grahic Jump Location
Variations of Ωmax,Vmax,(v2w2)max, and kmax with streamwise distance for the four cases examined (symbols: see Fig. 7; Uncertainty in Ωmax: see Fig. 4 caption, in Vmax: less than ±2.8 percent, in (v2w2)max/U ref2: less than 9.6 percent, in kmax: see Figs. 4 caption)
Grahic Jump Location
Sketch of experimental and coordinate system, and measurement planes of curved inlet duct models
Grahic Jump Location
Distributions of longitudinal mean velocity along Rh*≈0.96 and −0.96 (Uncertainty in U/Uref: less than ±2.8 percent)
Grahic Jump Location
Streamwise mean flow pattern in terms of resultant velocity vectors at Zh*=0.23 for four cases (Uncertainty in (U2+V2)1/2/Uref: less than ±2.8 percent)
Grahic Jump Location
Variations of various boundary layer thickness at θh=0 deg and Zh*=0 with guide-vane number and radial distance (Uncertainty in δ/Dh: less than 3.6 percent)

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