Computer Programs
NESC0720 RICE-LASL
last modified: 30-SEP-1986 | catalog | categories | new | search |

NESC0720 RICE-LASL

RICE-LASL, Hydrodynamic of Chemically Reactive Mixture by 2-D Navier Stokes Equation

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1. NAME OR DESIGNATION OF PROGRAM:  RICE-LASL
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2. COMPUTERS
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Program name Package id Status Status date
RICE-LASL NESC0720/01 Tested 30-SEP-1986

Machines used:

Package ID Orig. computer Test computer
NESC0720/01 CDC 6600 CDC CYBER 740
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3. DESCRIPTION OF PROBLEM OR FUNCTION

The    fluid   dynamics    of
chemically  reactive mixtures  are  calculated  at arbitrary  flow
speeds  with  the  RICE-LASL  program.   Application  is  made  to
continuous  wave HF  chemical  lasers  to compute  the  supersonic
mixing  and  chemical reactions  that  take  place in  the  lasing
cavity.
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4. METHOD OF SOLUTION

The dynamics   are  governed   by  the   two-
dimensional, time-dependent Navier-Stokes  equations together with
the species transport equations and the mass-action rate equations
for the chemical  reactions.  The mass and  momentum equations for
the mixture are solved implicitly by the Implicit Continuous-fluid
Eulerian  (ICE) technique.   The equations  for  total energy  and
species transport  are solved explicitly  while the  chemical rate
equations are  solved implicitly  with a time-step  that may  be a
submultiple of the hydrodynamic time-step.
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM:
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6. TYPICAL RUNNING TIME

0.0006 seconds of CDC7600 time/cell/cycle for single component fluids is required. This varies with increased species and chemical reaction.
NESC0720/01
NEA-DB executed the test case included in this package  on a CDC CYBER 740 computer in 64 seconds of CPU time.
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7. UNUSUAL FEATURES OF THE PROGRAM

RICE-LASL allows  triangular and
rectangular obstacles, with  or without inflow boundaries,  in the
computing mesh.
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8. RELATED AND AUXILIARY PROGRAMS:
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9. STATUS
Package ID Status date Status
NESC0720/01 30-SEP-1986 Tested at NEADB
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10. REFERENCES

W. C.  Rivard, O. A. Farmer,  T. D. Butler,  RICE:  A
Computer Program  for Multicomponent Chemically Reactive  Flows at
All Speeds, LA-5812, March 1975.
             Note to LA-5812, User Information, July 23, 1975.
NESC0720/01, included references:
- W.C. Rivard, O.A. Farmer, T.D. Butler:
  RICE: A Computer Program for Multicomponent Chemically Reactive
  Flows at All Speeds
  LA-5812  (March 1975)
- User Information
  Note to LA-5812  (July 23, 1975)
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11. MACHINE REQUIREMENTS:
NESC0720/01
To run the test case on a CDC CYBER 740 computer, 203,300 (octal) words of main storage are required.
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
NESC0720/01 FORTRAN-IV
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13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED:  LASL CROS system.
NESC0720/01
NOS 1.4-531 (CDC CYBER 740).
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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

Calls to DATAREL  and to most plotting routines  have been changed
to comments.
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15. NAME AND ESTABLISHMENT OF AUTHORS

                 W. C. Rivard, O. A. Farmer, and T. D. Butler
                 Los Alamos Scientific Laboratory
                 P. O. Box 1663
                 Los Alamos, New Mexico  87544
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16. MATERIAL AVAILABLE
NESC0720/01
File name File description Records
NESC0720_01.001 Information file 56
NESC0720_01.002 RICE LASL Source program 2836
NESC0720_01.003 RICE LASL JCL 13
NESC0720_01.004 RICE-LASL dummy routine 31
NESC0720_01.005 RICE-LASL auxiliary program 24
NESC0720_01.006 RICE-LASL sample problem input 30
NESC0720_01.007 RICE-LASL sample problem output 8398
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17. CATEGORIES
  • U. Chemistry

Keywords: Navier-Stokes equation, chemical lasers, chemical reactions, fluid mechanics, ice method, time dependence, two-dimensional.