Liquid column separation due to fluid hammer occurrence in propellant lines
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Liquid column separation due to fluid hammer occurrence in propellant linesData
2022-10-07Cita bibliográfica
Lema, M., Gosset, A., López Peña, F., and Steelant, J., “Liquid Column Separation Due to Fluid Hammer Occurrence in Propellant Lines,” Journal of Propulsion and Power, Vol. 39, No. 1, 2023, pp. 121–129. https://doi.org/10.2514/1.B38451
Resumo
[Abstract]: When a pressurized liquid enters a pipeline with a closed-end and under vacuum conditions, the resulting liquid front suddenly is brought to rest at the end of the pipe. This type of flow configuration is found in propulsion systems of satellites during priming operation and induces a fluid hammer followed by a column separation, generating a multiphase gas/vapor bubble. This paper aims at explaining the column separation mechanism by solving the momentum equation for the liquid column moving in the pipeline when column separation occurs, and by applying the integral form of the conservation principles to expansion and compression waves within the flow. The resulting model provides the velocity and position of the liquid front during column separation. Thus, the size and duration of the multiphase bubble can be determined, and the variables involved in the process are identified, which helps on the analysis of applications where this complex phenomenon is involved. It is shown that the initial velocity of the liquid front during column separation is the main parameter, which itself is a function of the fuel tank pressure and the fluid hammer pressure rise. The comparison of the predictions with experimental data shows an excellent agreement.
Palabras chave
Propellant
Satellites
Propulsion system
Vapour pressure
Tait equation
Moody diagram
Fluid structure interaction
Surface tension
Unsteady flows
Shear stress
Satellites
Propulsion system
Vapour pressure
Tait equation
Moody diagram
Fluid structure interaction
Surface tension
Unsteady flows
Shear stress
Descrición
This version of the article has been accepted for publication, after peer review, but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available online at: https://doi.org/10.2514/1.B38451
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© 2022 by the authors. Published by the American Institute of Aeronautics and Astronautics, Inc., with permission. All requests for copying and permission to reprint should be submitted to CCC at www.copyright.com; employ the eISSN 1533-3876 to initiate your request. See also AIAA Rights and Permissions www.aiaa.org/randp
ISSN
1533-3876