A Modified Fractional Step Method of Keeping a Constant Mass Flow Rate in Fully Developed Channel and Pipe Flows

The objective of this paper is to present a modified fractional step method of keeping a constant mass flow rate in spatially periodic flows, because original fractional step methods do not precisely keep the mass flow rate constant in time. In the modified method, the mean and fluctuating pseudo-pr...

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Bibliographic Details
Published in:Journal of mechanical science and technology 2000-05, Vol.14 (5), p.547-552
Main Authors: You, Jongwoo, Choi, Haecheon, Yoo, Jung Yul
Format: Article
Language:English
Subjects:
Channels
Exact sciences and technology
Flows in ducts, channels, nozzles, and conduits
Fluctuation
Fluid dynamics
Fundamental areas of phenomenology (including applications)
Mass flow rate
Physics
Pipe flow
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Summary:The objective of this paper is to present a modified fractional step method of keeping a constant mass flow rate in spatially periodic flows, because original fractional step methods do not precisely keep the mass flow rate constant in time. In the modified method, the mean and fluctuating pseudo-pressure gradients are separately obtained at each time step. This method is successfully applied to channel and pipe flows and shown to be suitable for maintaining a constant mass flow rate in time.[PUBLICATION ABSTRACT]
ISSN:1226-4865
1738-494X
1976-3824
DOI:10.1007/bf03185657