Direct Numerical Simulation of Boiling Multiphase Flows: State-of-the-Art, Modeling, Algorithmic and Computer Needs

Conference · Sun Apr 01 00:00:00 EDT 2007

OSTI ID:911955

Nourgaliev, R; Knoll, D; Mousseau, V; Berry, R

The state-of-the-art for Direct Numerical Simulation (DNS) of boiling multiphase flows is reviewed, focussing on potential of available computational techniques, the level of current success for their applications to model several basic flow regimes (film, pool-nucleate and wall-nucleate boiling -- FB, PNB and WNB, respectively). Then, we discuss multiphysics and multiscale nature of practical boiling flows in LWR reactors, requiring high-fidelity treatment of interfacial dynamics, phase-change, hydrodynamics, compressibility, heat transfer, and non-equilibrium thermodynamics and chemistry of liquid/vapor and fluid/solid-wall interfaces. Finally, we outline the framework for the {\sf Fervent} code, being developed at INL for DNS of reactor-relevant boiling multiphase flows, with the purpose of gaining insight into the physics of multiphase flow regimes, and generating a basis for effective-field modeling in terms of its formulation and closure laws.

• Research Organization: Idaho National Lab. (INL), Idaho Falls, ID (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: DE-AC07-99ID-13727
• OSTI ID: 911955
• Report Number(s): INL/CON-07-12389; TRN: US200801%%401
• Resource Relation: Conference: Joint International topical meeting on Mathematics & Computation and Supercomputing in Nuclear Appli,Monterey California,04/15/2007,04/19/2007
• Country of Publication: United States
• Language: English

Related Subjects

99 - GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
BOILING
CHEMISTRY
CLOSURES
COMPRESSIBILITY
COMPUTERS
FOCUSING
HEAT TRANSFER
HYDRODYNAMICS
MULTIPHASE FLOW
PHYSICS
SIMULATION
THERMODYNAMICS
Boiling multiphase flows
Direct Numerical Simulation
Interface Tracking
Two-fluid model