ORBEOS: a spherical, fully multidimensional flux-corrected transport-hydrodynamics code
ORBEOS is a two-dimensional (r-theta), Eulerian hydrodynamics code with tabular equation of state (EOS), that uses a fully multidimensional flux-corrected transport algorithm to solve the fluid equations. This flux-corrected transport (FCT) algorithm, developed by S.T. Zalesak, is Cartesian and accurate to any desired order in space and to second order in time. The algorithm used in ORBEOS was modified for spherical geometry and is accurate in space to fourth order. Although this algorithm has been used before to solve the continuity equation, it is used in ORBEOS for the first time as the basic algorithm in a full hydrocode. The physical equations solved in the code and their finite-difference representations are described, and it is shown why the fully multidimensional algorithm better represents incompressible flows and does not lead to virtual sources as does the older one-dimensional FCT algorithm using Strang-type time-step differencing to handle multidimensional problems. Several test problems are presented and discussed.
- Research Organization:
- Los Alamos Scientific Lab., NM (USA)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 6449330
- Report Number(s):
- LA-8908-MS; ON: DE81026427
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COMPUTER CODES
O CODES
HYDRODYNAMICS
ALGORITHMS
COMPRESSIBLE FLOW
EQUATIONS OF STATE
INCOMPRESSIBLE FLOW
TWO-DIMENSIONAL CALCULATIONS
EQUATIONS
FLUID FLOW
FLUID MECHANICS
MATHEMATICAL LOGIC
MECHANICS
640410* - Fluid Physics- General Fluid Dynamics