[논문]Performance evaluation of vaned pipe bends in turbulent flow of liquid propellants

Haskew, J.T.; Sharif, M.A.R.

doi:10.1016/S0307-904X(96)00121-7

[해외논문] Performance evaluation of vaned pipe bends in turbulent flow of liquid propellants

Applied mathematical modelling, v.21 no.1, 1997년, pp.48 - 62

Haskew, J.T. (Department of Engineering Science and Mechanics, The University of Alabama, Tuscaloosa, ALUSA) , Sharif, M.A.R. (Address reprint requests to Dr. Sharif at the Department of Aerospace Engineering and Mechanics, The University of Alabama, P. O. Box 870280, Tuscaloosa, Alabama 35487-0280.)

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AbstractComputational fluid dynamics techniques were used to analyze turbulent, incompressible flow in a vaned pipe bend that is being considered for use in the liquid propellant feed lines of the space shuttle main engine. The design is an 80° bend that incorporates two turning vanes. Computations were performed using a finite difference code for solving the Navier-Stokes equations in three dimensions using the method of pseudocompressibility, a flux-splitting upwind differencing scheme, and a Baldwin-Barth one-equation turbulence model. To compare and evaluate the performance of the bend under consideration, two other bend designs—an unvaned 80° bend and a simplified 80° vaned bend—were also analyzed. Evaluation of the bend designs was accomplished by comparing the predicted streamwise and cross-stream velocity distributions at the symmetry plane at several streamwise stations and the predicted mean pressure drops. It was observed that the vaned bend under consideration effectively provides uniform streamwise velocity distributions downstream of the bend, reduces cross-stream velocities, and significantly reduces pressure losses.

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참고문헌 (14)

AIAA Paper 91-1656 Williams 1991 Computational study of duct and pipe flows using the method of pseudo-compressibility
Ito 684 1966 Transactions of the ASME Pressure losses in vaned elbows of a circular cross-section
Br. Chem. Eng. Dimmock 2 6 302 1957 Cascade corners for ducts of circular cross-section
Cheng 1 1991 Forum on Turbulent Flows, ASME-FED On turbulent flows dominated by curvature effects
AIAA Paper 89-0276 McConnaughey 1989 The prediction of secondary flow in curved ducts of square cross-section
AIAA Paper 86-0044 Gelder 1986 Wind tunnel turning vanes of modern design
NASA CR-170992 Brophy 1984 A study of pump cavitation damage
ASME Design, Repair, and Refurbishment of Steam Turbines Tindell 13 43 1991 Computational fluid dynamics analysis of a steam power plant low pressure turbine downward exhaust hood
AIAA Paper 93-0678 Kiris 1993 Incompressible Navier-Stokes computations of rotating flows
AIAA Journal Rogers 29 4 603 1991 10.2514/3.10627 Steady and unsteady solutions of the incompressible Navier-Stokes equations

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NASA TM 101051 Rogers 1988 An upwind differencing scheme for the incompressible Navier-Stokes equations
AIAA Paper 91-0610 Baldwin 1991 A one-equation turbulence transport model for high Reynolds number wall-bounded flows
NASA CR-3551 Enayet 1982 Laser Doppler measurements of laminar and turbulent flow in a pipe bend
Benedict 186 1980 Fundamentals of Pipe Flow

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[해외논문] Performance evaluation of vaned pipe bends in turbulent flow of liquid propellants

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