A computer code for multiphase all-speed transient flows in complex geometries. MAST version 1.0

Chen, C. P.; Jiang, Y.; Kim, Y. M.; Shang, H. M.

The operation of the MAST code, which computes transient solutions to the multiphase flow equations applicable to all-speed flows, is described. Two-phase flows are formulated based on the Eulerian-Lagrange scheme in which the continuous phase is described by the Navier-Stokes equation (or Reynolds equations for turbulent flows). Dispersed phase is formulated by a Lagrangian tracking scheme. The numerical solution algorithms utilized for fluid flows is a newly developed pressure-implicit algorithm based on the operator-splitting technique in generalized nonorthogonal coordinates. This operator split allows separate operation on each of the variable fields to handle pressure-velocity coupling. The obtained pressure correction equation has the hyperbolic nature and is effective for Mach numbers ranging from the incompressible limit to supersonic flow regimes. The present code adopts a nonstaggered grid arrangement; thus, the velocity components and other dependent variables are collocated at the same grid. A sequence of benchmark-quality problems, including incompressible, subsonic, transonic, supersonic, gas-droplet two-phase flows, as well as spray-combustion problems, were performed to demonstrate the robustness and accuracy of the present code.

Document ID

19920010138

Acquisition Source

Legacy CDMS

Document Type

Contractor Report (CR)

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Date Acquired

September 6, 2013

Publication Date

October 1, 1991

Subject Category

Report/Patent Number

Accession Number

92N19380

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Public

Work of the US Gov. Public Use Permitted.

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