Analytical and Experimental Methods of Design for Supersonic Two-Stage Ejectors
In this paper the supersonic ejectors are
experimentally and analytically studied. Ejector is a device that
uses the energy of a fluid to move another fluid. This device works
like a vacuum pump without usage of piston, rotor or any other
moving component. An ejector contains an active nozzle, a passive
nozzle, a mixing chamber and a diffuser. Since the fluid viscosity
is large, and the flow is turbulent and three dimensional in the
mixing chamber, the numerical methods consume long time and
high cost to analyze the flow in ejectors. Therefore this paper
presents a simple analytical method that is based on the precise
governing equations in fluid mechanics. According to achieved
analytical relations, a computer code has been prepared to analyze
the flow in different components of the ejector. An experiment has
been performed in supersonic regime 1.5
[1] ESDU, ''Ejector and jet pumps Design and performance for
compressible air flow'', Date item No.84029, London, September,
1986.
[2] Cherkassky, V.M. ''Pumps fans compressors'', Moscow, Mir pub, pp
64-373, 1997.
[3] Anderson, J.D. ''Fundamentals of aerodynamics '', Mc Grow-hill book
company, 2005.
[4] Abramovich, G.N. ''Fundamentals of gas dynamics'', musco, 1969.
[5] ESDU, 74015, ''Performamance in incompressible flow of plancewalled
diffusers with single-plane expansion.
[6] Ascher, H.Sh. ''The dynamics and thermodynamics of compressible
fluid flow''.Vol.1, Publisher Wiley, 1953.
[7] Leybold-heraeus gmbh,'' Vacuum technology its foundations formulae
and Tables'', Publisher Leybold-Heraeus, 1981.
[8] Beam .R.M.and Warming, R.F,'' An Implicit factored Scheme for the
Compressible Flow''AIAA journal, 1978.
[9] William.H.P.and Saul .A.T.''Numerical Recipes in C'', 1992.
[10] Mac Cormack, R.W.''A Numerical method for solving the equations
of compressible viscous Flow '', AIAA journal, Vol.1, pp.234-
236.1982.
[11] Keenan, J.H.''A Simple Air Ejector '', Vol.2, pp. A75-A81.1942.
[12] ''Fluent user's manual'', Fluent Inc.1999.
[13] Neve, R.S.''Computational Fluid Dynamics Analysis of Diffuser
performance in Gas -powered Jet Pump'', Int.J.Heat and Fluid Flow
Vol. 14, No.4, pp. 401-407, Dec. 1993.
[14] ''Ejector performance test codes '', ASME 1976.
[1] ESDU, ''Ejector and jet pumps Design and performance for
compressible air flow'', Date item No.84029, London, September,
1986.
[2] Cherkassky, V.M. ''Pumps fans compressors'', Moscow, Mir pub, pp
64-373, 1997.
[3] Anderson, J.D. ''Fundamentals of aerodynamics '', Mc Grow-hill book
company, 2005.
[4] Abramovich, G.N. ''Fundamentals of gas dynamics'', musco, 1969.
[5] ESDU, 74015, ''Performamance in incompressible flow of plancewalled
diffusers with single-plane expansion.
[6] Ascher, H.Sh. ''The dynamics and thermodynamics of compressible
fluid flow''.Vol.1, Publisher Wiley, 1953.
[7] Leybold-heraeus gmbh,'' Vacuum technology its foundations formulae
and Tables'', Publisher Leybold-Heraeus, 1981.
[8] Beam .R.M.and Warming, R.F,'' An Implicit factored Scheme for the
Compressible Flow''AIAA journal, 1978.
[9] William.H.P.and Saul .A.T.''Numerical Recipes in C'', 1992.
[10] Mac Cormack, R.W.''A Numerical method for solving the equations
of compressible viscous Flow '', AIAA journal, Vol.1, pp.234-
236.1982.
[11] Keenan, J.H.''A Simple Air Ejector '', Vol.2, pp. A75-A81.1942.
[12] ''Fluent user's manual'', Fluent Inc.1999.
[13] Neve, R.S.''Computational Fluid Dynamics Analysis of Diffuser
performance in Gas -powered Jet Pump'', Int.J.Heat and Fluid Flow
Vol. 14, No.4, pp. 401-407, Dec. 1993.
[14] ''Ejector performance test codes '', ASME 1976.
@article{"International Journal of Mechanical, Industrial and Aerospace Sciences:64035", author = "S. Daneshmand and C. Aghanajafi and A. Bahrami", title = "Analytical and Experimental Methods of Design for Supersonic Two-Stage Ejectors", abstract = "In this paper the supersonic ejectors are
experimentally and analytically studied. Ejector is a device that
uses the energy of a fluid to move another fluid. This device works
like a vacuum pump without usage of piston, rotor or any other
moving component. An ejector contains an active nozzle, a passive
nozzle, a mixing chamber and a diffuser. Since the fluid viscosity
is large, and the flow is turbulent and three dimensional in the
mixing chamber, the numerical methods consume long time and
high cost to analyze the flow in ejectors. Therefore this paper
presents a simple analytical method that is based on the precise
governing equations in fluid mechanics. According to achieved
analytical relations, a computer code has been prepared to analyze
the flow in different components of the ejector. An experiment has
been performed in supersonic regime 1.5", keywords = "Ejector, Wind Tunnel, Supersonic, Diffuser, Machnumber, Mixing Chamber", volume = "3", number = "2", pages = "226-4", }