Computer Programs
NESC9644 NASA-VOF2D.
NASA-VOF2D, 2-D Transient Free Surface Incompressible Fluid Dynamic
NAME OR DESIGNATION OF PROGRAM, COMPUTER, DESCRIPTION OF PROGRAM OR FUNCTION, METHOD OF SOLUTION, RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM, TYPICAL RUNNING TIME, UNUSUAL FEATURES OF THE PROGRAM, RELATED AND AUXILIARY PROGRAMS, STATUS, REFERENCES, MACHINE REQUIREMENTS, LANGUAGE, OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED, OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS, NAME AND ESTABLISHMENT OF AUTHORS, MATERIAL, CATEGORIES
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| Program name | Package id | Status | Status date |
|---|---|---|---|
| NASA-VOF2D | NESC9644/01 | Tested | 04-FEB-1988 |
Machines used:
| Package ID | Orig. computer | Test computer |
|---|---|---|
| NESC9644/01 | CRAY 1 | CRAY X-MP |
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3. DESCRIPTION OF PROGRAM OR FUNCTION
NASA-VOF2D is a two- dimensional, transient, free surface incompressible fluid dynamics program. It allows multiple free surfaces with surface tension and wall adhesion forces and has a partial cell treatment which allows curved boundaries and interior obstacles.
NASA-VOF2D is a two- dimensional, transient, free surface incompressible fluid dynamics program. It allows multiple free surfaces with surface tension and wall adhesion forces and has a partial cell treatment which allows curved boundaries and interior obstacles.
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4. METHOD OF SOLUTION
NASA-VOF2D simulates incompressible flows with free surfaces using the volume-of-fluid (VOF) algorithm. This technique is based on the use of donor-acceptor differencing to track the free surface across an Eulerian grid. The complete Navier-Stokes equations in primitive variables for an incompressible fluid are solved by finite differences with surface tension and wall adhesion included. Optionally the pressure equation can be solved by a conjugate residual method rather than the successive overrelaxation (SOR) method.
NASA-VOF2D simulates incompressible flows with free surfaces using the volume-of-fluid (VOF) algorithm. This technique is based on the use of donor-acceptor differencing to track the free surface across an Eulerian grid. The complete Navier-Stokes equations in primitive variables for an incompressible fluid are solved by finite differences with surface tension and wall adhesion included. Optionally the pressure equation can be solved by a conjugate residual method rather than the successive overrelaxation (SOR) method.
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NESC9644/01
The test case included in this package has been executed by the NEA Data Bank on a CRAY-XMP/2000 SERIAL-113 computer in 2 seconds of CPU time.[ top ]
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10. REFERENCES
- NASA-VOF2D, NESC No. 9644, NASA-VOF2D Tape Description and
Implementation Information,
National Energy Software Center Note 86-71, July 6, 1986.
- B. Nichols, C.W. Hirt, and R.S. Hotchkiss
SOLA-VOF: A Solution Algorithm for Transient Fluid Flow with
Multiple Free Boundaries,
LA-8355, August 1980.
- R.S. Hotchkiss
Simulation of Tank Draining Phenomena with the NASA SOLA-VOF Code, LA-8163-MS, December 1979.
- NASA-VOF2D, NESC No. 9644, NASA-VOF2D Tape Description and
Implementation Information,
National Energy Software Center Note 86-71, July 6, 1986.
- B. Nichols, C.W. Hirt, and R.S. Hotchkiss
SOLA-VOF: A Solution Algorithm for Transient Fluid Flow with
Multiple Free Boundaries,
LA-8355, August 1980.
- R.S. Hotchkiss
Simulation of Tank Draining Phenomena with the NASA SOLA-VOF Code, LA-8163-MS, December 1979.
NESC9644/01, included references:
- M.D. Torrey, L.D. Cloutman, R.C. Mjolsness and C.W. Hirt:NASA-VOF2D: A Computer Program for Incompressible Flows
with Free Surfaces.
LA-10612-MS (December 1985)
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NESC9644/01
Execution of the test case on a CRAY-XMP/2000 computer required 143,872 words of main storage.[ top ]
NESC9644/01
COS 1.15 with compiler CFT 1.14 (CRAY-XMP/2000).[ top ]
14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS
NASA-VOF2D contains calls to several system-dependent plotting routines and a time limit routine. These are not included, and users must supply their own equivalent routines. NASA-VOF2D can run many problems without modification, but a specific application may require changes to the logic for special inflow or outflow ports, complicated geometries, or unusual conditions. These are accomplished by using the UPDATE utility.
NASA-VOF2D contains calls to several system-dependent plotting routines and a time limit routine. These are not included, and users must supply their own equivalent routines. NASA-VOF2D can run many problems without modification, but a specific application may require changes to the logic for special inflow or outflow ports, complicated geometries, or unusual conditions. These are accomplished by using the UPDATE utility.
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NESC9644/01
| File name | File description | Records |
|---|---|---|
| NESC9644_01.001 | Information file | 56 |
| NESC9644_01.002 | JCL and control information | 23 |
| NESC9644_01.003 | NASA-VOF2D UPDATE source | 3743 |
| NESC9644_01.004 | NASA-VOF2D source updates | 41 |
| NESC9644_01.005 | NASA-VOF2D dummy routines | 43 |
| NESC9644_01.006 | NASA-VOF2D Sample problem input | 18 |
| NESC9644_01.007 | NASA-VOF2D Sample problem output | 1550 |
Keywords: Navier-Stokes equation, finite difference method, fluid flow, incompressible flow, two-dimensional.