文档介绍：Computers & Fluids 48 (2011) 163–182
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Computers & Fluids
journal homepage: pfluid
A direct numerical simulation of axisymmetric cryogenic two-phase flows
in a pipe with phase change
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Cheng-Feng Tai, . Chung
Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, FL 32611, USA
article info abstract
Article history: An accurate finite-volume based numerical method for the simulation of a cryogenic two-phase flow with
Received 17 June 2010 phase change heat transfer, consisting of a saturated liquid slug translating in its own superheated vapor
Received in revised form 5 January 2011 in a circular pipe is presented. This method is built on a sharp interface concept and developed on an
Accepted 14 April 2011
Eulerian Cartesian fixed-grid with a cut-cell scheme and marker points to track the moving interface.
Available online 28 April 2011
The unsteady, axisymmetric Navier–Stokes equations in both liquid and vapor phases are solved sepa-
rately. The mass continuity, momentum flux conditions and conservation of energy are explicitly
Keywords:
matched at the true boundary between the two phases to determine the interface shape and movement.
Gas–liquid pipe flow
A quadratic curve fitting algorithm with marker points is used to yield smooth and accurate information
Phase-change heat transfer
Cartesian grid of the interface curvatures.
Sharp-interface method It is uniquely demonstrated for the first time with the current method that conservation of mass is
Cut-cell approach strictly enforced for continuous infusion of flow into the domain putation. The method has been
Moving interface used pute the velocity, pressure and temperature fields and the deformation of the liquid core.
Reynolds number It is also shown that the current method is capable of producing accurate results for a wide range of Rey-
Weber number nolds number, Re, Weber number, We, Jakob number, Ja and large