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ESTS0185 RIPPLE.

RIPPLE, Incompressible Fluid Dynamics with Free Surfaces

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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.