Numerical simulation of two-dimensional single- and multiple-material flow fields
- Sandia National Labs., Albuquerque, NM (United States)
- Los Alamos National Lab., NM (United States)
Over the last several years, Sandia National Laboratories has had an interest in developing capabilities to predict the flow fields around vehicles entering or exiting the water at a wide range of speeds. Such prediction schemes have numerous engineering applications in the design of weapon systems. For example, such a scheme could be used to predict the forces and moments experienced by an air-launched anti-submarine weapon on water-entry. Furthermore, a water-exit prediction capability could be used to model the complicated surface closure jet resulting from a missile being shot out of the water. The CCICE (Cell-Centered Implicit Continuous-fluid Eulerian) code developed at Los Alamos National Laboratory (LANL) was chosen to provide the fluid dynamics solver for high speed water-entry and water-exit problems. This implicit time-marching, two-dimensional, conservative, finite-volume code solves the multi-material, compressible, inviscid fluid dynamics equations. The incompressible version of the CCICE code, CCMAC (cell-Centered Marker and Cell), was chosen for low speed water- entry and water-exit problems in order to reduce the computational expense. These codes were chosen to take advantage of certain advances in numerical methods for computational fluid dynamics (CFD) that have taken place at LANL. Notable among these advances is the ability to perform implicit, multi-material, compressible flow simulations, with a fully cell-centered data structure. This means that a single set of control volumes are used, on which a discrete form of the conservation laws is satisfied. This is in control to the more classical staggered mesh methods, in which separate control volumes are defined for mass and momentum. 12 refs.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-36; AC04-76DP00789
- OSTI ID:
- 10123941
- Report Number(s):
- LA-UR-92-3; CONF-920685-2; SAND-91-2788C; ON: DE92007428
- Resource Relation:
- Conference: 27. cavitation and multiphase flow forum,Los Angeles, CA (United States),21-25 Jun 1992; Other Information: PBD: [1992]
- Country of Publication:
- United States
- Language:
- English
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75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
HYDRODYNAMICS
C CODES
PENETRATORS
LIQUID FLOW
NUMERICAL SOLUTION
COMPUTERIZED SIMULATION
TWO-DIMENSIONAL CALCULATIONS
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SURFACE WATERS
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MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
PHYSICS OF CONDENSED MATTER