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TECHNICAL PAPERS

Energy Losses at Tees With Large Area Ratios

[+] Author and Article Information
Kenji Oka

Department of Mechanical Engineering, College of Engineering, Nihon University, Kōriyama, 963-8642, Japane-mail: okak@mech.ce.nihon-u.ac.jp

Hidesato Itō

3-5-13, Kuromatsu, Izumi-ku, Sendai, 981-8006, Japan

J. Fluids Eng 127(1), 110-116 (Mar 22, 2005) (7 pages) doi:10.1115/1.1852475 History: Received October 03, 2002; Revised August 17, 2004; Online March 22, 2005
Copyright © 2005 by ASME
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References

Figures

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Loss coefficients for flow from the branch pipe into the main pipe of tees. m=11.44: 1 Eq. (10), 2 Eq. (13).
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Loss coefficients for flow from the main pipe into the branch pipe of tees. m=11.44: 1 Eq. (12), 2 Eq. (11).
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Power-loss coefficients for tees. m=11.44: Full lines are given by Eqs. (6) and (7) together with Eqs. (8) to (13).
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Values of correction factors. (a) kc for Eq. (8). 1 Eq. (16); (b) kc(≈kd) for Eqs. (10) and (13); (c) kd(≈kc) for Eqs. (11) and (12). The values of the uncertainties for kc and kd are given in Table 1.
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Loss coefficients for straight-through flow in tees. Comparison with other investigators: 1 Eq. (8), 2 Eq. (15), 3 θ=90 deg, m=111.
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Loss coefficients for branch flow in tees. Comparison with other investigators: 1 Eq. (10), 2 Eq. (11).
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Control volume for counter-combining flow in a tee.
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Control volume for counter-dividing flow in a tee.
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Control volume for straight-through flow in a dividing tee.
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Comparison of experimental data with Eq. (14). 1 Eq. (14).
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Loss coefficients for straight-through flow in tees. m=11.44: 1 Eq. (8), 2 Eq. (15), 3 θ=90 deg, m=111.
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Arrangement of experimental apparatus in the case of counter-combining flow, where θ=45 deg–135 deg and d1=d2.
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Configurations of flow. Arrows indicate the direction of flow.

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