NESC9808 TEMPEST-BNW.

1. NAME OR DESIGNATION OF PROGRAM:  TEMPEST-BNW.

3. DESCRIPTION OF PROGRAM OR FUNCTION

TEMPEST-BNW is a transient, three-dimensional, hydrothermal program that is designed to analyze  a range of coupled fluid dynamic and heat transfer systems of particular interest to the Fast Breeder Reactor (FBR) thermal- hydraulic design community. The full three-dimensional, time- dependent equations of motion, continuity, and heat transport are solved for either laminar or turbulent fluid flow, including heat diffusion and generation in both solid and liquid materials. The equations governing mass, momentum, and energy conservation for incompressible flows and small density variations (Boussinesq approximation) are solved using finite-difference techniques. Analyses may be conducted in either cylindrical or Cartesian coordinate systems. Turbulence is treated using a two-equation model.
Two auxiliary plotting programs, SEQUEL and MANPLOT, for use with TEMPEST-BNW output are included. SEQUEL may be operated in batch or  interactive mode; it generates data required for vector plots, contour plots of scalar quantities, line plots, grid and boundary plots, and time-history plots. MANPLOT reads the SEQUEL-generated data and creates the hard copy plots.
TEMPEST-BNW can be a valuable hydrothermal design analysis tool in areas outside the intended FBR thermal-hydraulic design community.

4. METHOD OF SOLUTION

The finite-difference approach for the fluid- flow solution is based on a semi-implicit procedure whereby the momentum equations are solved explicitly, and the continuity/ pressure solution is obtained implicitly. The energy equation is solved with a fully implicit method, and a direct steady-state option is available for heat transfer only problems.

5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

Limitations of the current release, identified as TEMPEST Version L, Mod 3, are as follows: incompressible flow only; computational cell structure must be in rows/columns/tiers; Cartesian or cylindrical coordinates only; hydrodynamic solution is explicit in time - no direct solution for steady-state, pressure boundary conditions are not available; and curved boundaries (except circular) must be stair-stepped.

6. TYPICAL RUNNING TIME:

7. UNUSUAL FEATURES OF THE PROGRAM

TEMPEST-BNW contains the unique feature of fully-coupled hydrodynamic and solid material heat diffusion solutions.

8. RELATED AND AUXILIARY PROGRAMS

TEMPEST/N31 (NESC G9439) extends the capabilities of TEMPEST-BNW to include mass transfer in flow regions.

10. REFERENCES

- L.L. Eyler and D.S. Trent,
  Pressurized Thermal Shock: TEMPEST Computer Code Simulation of
  Thermal Mixing in the Cold Leg and Downcomer of a Pressurized
  Water Reactor,
  NUREG/CR-3564 (PNL-4969), April 1984.

- D.S. Trent, L.L. Eyler, and M.J. Budden,
  TEMPEST A Three-Dimensional Time-Dependent Computer Program for
  Hydrothermal Analysis
  Volume I: Numerical Methods and Input Instructions
  PNL-4348 Vol. I (September 1983).
- D.S. Trent, L.L. Eyler, and M.J. Budden,
  TEMPEST A Three Dimensional Time-Dependent Computer Program for
  Hydrothermal Analysis
  Volume II: Assessment and Verification Results
  PNL-4348 Vol. II (September 1983).
- L.L. Eyler
  SEQUEL and MANPLOT Auxiliary Plotting Programs for the TEMPEST
  Computer Code
  Pacific Northwest Laboratory Memorandum, received (December 13,
  1983).

11. MACHINE REQUIREMENTS:

13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED:

14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

MANPLOT uses the proprietary CalComp graphics software; this software is not included. The MANPLOT source, as supplied, is designed for a DEC VAX11/780.

15. NAME AND ESTABLISHMENT OF AUTHORS

         L.L. Eyler
         Pacific Northwest Laboratory
         P.O. Box 999
         Richland, Washington 99352

source program   mag tapeTEMPEST-BNW CDC UPDATE Source File         SRCTP
source program   mag tapeSEQUEL Source File (FORTRAN)               SRCTP
test-case data   mag tapeSEQUEL Sample Problem Input                DATTP
test-case data   mag tapeSEQUEL Sample Data File Plot Information   DATTP
test-case output mag tapeSEQUEL Sample Problem Output               OUTTP
source program   mag tapeMANPLOT Source File (FORTRAN)              SRCTP
test-case data   mag tapeSample Problem 1A Input                    DATTP
test-case data   mag tapeSample Problem 1C Input                    DATTP
test-case data   mag tapeSample Problem 2B Input                    DATTP
test-case data   mag tapeSample Problem 5 Input                     DATTP
test-case data   mag tapeSample Problem 6 Input                     DATTP
test-case data   mag tapeSample Problem 7 Input                     DATTP
test-case data   mag tapeSample Problem 8 Input                     DATTP
test-case data   mag tapeSample Problem 10 Input                    DATTP
test-case data   mag tapeSample Problem from Reference Report       DATTP
test-case output mag tapeSample Problem 1A Output                   OUTTP
test-case output mag tapeSample Problem 1C Output                   OUTTP
test-case output mag tapeSample Problem 2B Output                   OUTTP
test-case output mag tapeSample Problem 5 Output                    OUTTP
test-case output mag tapeSample Problem 6 Output                    OUTTP
test-case output mag tapeSample Problem 7 Output                    OUTTP
test-case output mag tapeSample Problem 8 Output                    OUTTP
test-case output mag tapeSample Problem 10 Output                   OUTTP
test-case output mag tapeOutput for S.P. from the Reference Report  OUTTP
report                   PNL-4348 Vol. I (September 1983)           REPPT
report                   PNL-4348 Vol. II (September 1983)          REPPT
user's guide             SEQUEL and MANPLOT Auxiliary Plotting...   WRKPT