last modified: 04-FEB-1988 | catalog | categories | new | search |

NESC9644 NASA-VOF2D.

NASA-VOF2D, 2-D Transient Free Surface Incompressible Fluid Dynamic

top ]
1. NAME OR DESIGNATION OF PROGRAM:  NASA-VOF2D.
top ]
2. COMPUTERS
To submit a request, click below on the link of the version you wish to order. Only liaison officers are authorised to submit online requests. Rules for requesters are available here.
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
top ]
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.
top ]
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.
top ]
5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM:
top ]
6. TYPICAL RUNNING TIME:
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 ]
7. UNUSUAL FEATURES OF THE PROGRAM

NASA-VOF2D is highly structured so that individual components may be easily modified to fit specific problem requirements or to accept subsequent code upgrades.
top ]
8. RELATED AND AUXILIARY PROGRAMS

The numerical method used in NASA-VOF2D is an extension of the method used in SOLA-VOF (NESC 948) and NASA SOLA-VOF.
top ]
9. STATUS
Package ID Status date Status
NESC9644/01 04-FEB-1988 Tested at NEADB
top ]
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.
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)
top ]
11. MACHINE REQUIREMENTS:  3 units in addition to the standard input/output units.
NESC9644/01
Execution of the test case on a CRAY-XMP/2000 computer  required 143,872 words of main storage.
top ]
12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
NESC9644/01 FORTRAN
top ]
13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED:
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.
top ]
15. NAME AND ESTABLISHMENT OF AUTHORS

           M.D. Torrey
           Los Alamos National Laboratory
top ]
16. MATERIAL AVAILABLE
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
top ]
17. CATEGORIES
  • H. Heat Transfer and Fluid Flow

Keywords: Navier-Stokes equation, finite difference method, fluid flow, incompressible flow, two-dimensional.