EFFECTS OF DIFFERENT NUMERICAL INTERFACE METHODS ON HYDRODYNAMICS INSTABILITY

Conference · Thu Jan 11 00:00:00 EST 2007

OSTI ID:1000750

FRANCOIS, MARIANNE M ^[1]; DENDY, EDWARD D ^[1]; LOWRIE, ROBERT B ^[1]; LIVESCU, DANIEL ^[1]; STEINKAMP, MICHAEL J ^[1]

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1. Los Alamos National Laboratory

The authors compare the effects of different numerical schemes for the advection and material interface treatments on the single-mode Rayleigh-Taylor instability, using the RAGE hydro-code. The interface growth and its surface density (interfacial area) versus time are investigated. The surface density metric shows to be better suited to characterize the difference in the flow, than the conventional interface growth metric. They have found that Van Leer's limiter combined to no interface treatment leads to the largest surface area. Finally, to quantify the difference between the numerical methods they have estimated the numerical viscosity in the linear-regime at different scales.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• DOE Contract Number: AC52-06NA25396
• OSTI ID: 1000750
• Report Number(s): LA-UR-07-0205; TRN: US201101%%534
• Resource Relation: Conference: IWPCTM 10 ; 200607 ; PARIS
• Country of Publication: United States
• Language: English

Related Subjects

99 GENERAL AND MISCELLANEOUS
ADVECTION
HYDRODYNAMICS
INSTABILITY
METRICS
RAYLEIGH-TAYLOR INSTABILITY
SURFACE AREA
VISCOSITY