ESTS0185 RIPPLE.

RIPPLE, Incompressible Fluid Dynamics with Free Surfaces

NAME OR DESIGNATION OF PROGRAM, COMPUTER, DESCRIPTION OF PROGRAM OR FUNCTION, METHOD OF SOLUTION, RESTRICTIONS, CPU, UNUSUAL FEATURES OF THE PROGRAM, AUXILIARIES, 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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1. NAME OR DESIGNATION OF PROGRAM: RIPPLE.

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2. COMPUTERS

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Program name	Package id	Status	Status date
RIPPLE	ESTS0185/01	Arrived	23-JUN-1999

Machines used:

Package ID	Orig. computer	Test computer
ESTS0185/01	CRAY family

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3. DESCRIPTION OF PROGRAM OR FUNCTION

RIPPLE 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

RIPPLE 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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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

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6. TYPICAL RUNNING TIME

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7. UNUSUAL FEATURES OF THE PROGRAM

RIPPLE is highly structured so that individual components may be easily modified to fit specific problem requirements or to accept subsequent code upgrades.

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8. RELATED OR AUXILIARY PROGRAMS

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9. STATUS

Package ID	Status date	Status
ESTS0185/01	23-JUN-1999	Masterfiled Arrived

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10. REFERENCES

- M.D. Torrey et al.:
  NASA-VOF2D: A Computer Program for Incompressible Flows with Free  Surfaces,
  LA-10612-MS (December 1985)
- NASA-VOF2D, NESC No. 9644, NASA-VOF2D Tape description and
  Implementation Information, National Energy Software Center Note
  86071 (July 6, 1986)
- B. Nichols et al.:
  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)

ESTS0185/01, included references:

- D.B. Kothe et al.:
  RIPPLE: A Computer Program for Incompressible Flows with Free
  Surfaces
  LA-12007-MS ; UC-000 (April 1991)

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11. MACHINE REQUIREMENTS

3 units in addition to the standard input/output units. 144,000 words of memory are required for execution on a Cray X-MP.

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12. PROGRAMMING LANGUAGE(S) USED

Package ID	Computer language
ESTS0185/01	FORTRAN

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13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED: COS 1.15 (CRAY X-MP).

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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

RIPPLE 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. RIPPLE 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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15. NAME AND ESTABLISHMENT OF AUTHORS

   D.B. Kothe
   Los Alamos National Laboratory
   Los Alamos, New Mexico, U. S. A.

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16. MATERIAL AVAILABLE

ESTS0185/01

report                   LA-12007-MS (April 1991)                   REPPT
report                   LA-12007-MS (April 1991)                   REPPT
miscellaneous    mag tapeREADME Information file                    MISTP
source program   mag tape/CRAY/.f Routines for CRAY version         SRCTP
source program   mag tape/LIB/GRAPHICS/.f Routines for UNIX version SRCTP
source program   mag tapeRoutines (files *.f)                       SRCTP
test-case data   mag tapeInput files (files *.inp)                  DATTP
test-case data   mag tapeCoding modifications to run the problem    DATTP
test-case output mag tapeOutput files (files *.log)                 OUTTP
source program   mag tapeInlcude files                              SRCTP

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17. CATEGORIES

H. Heat Transfer and Fluid Flow

Keywords: fluid flow, incompressible flow.