NEA-0816 MUENSTER.
MUENSTER, 2-D R-Z Geometry Thermohydraulics Calculation for Pebble-Bed Reactor
NAME OR DESIGNATION OF PROGRAM, COMPUTER, DESCRIPTION OF PROBLEM OR FUNCTION, METHOD OF SOLUTION, RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM, TYPICAL RUNNING TIME, UNUSUAL FEATURES OF THE PROGRAM, RELATED AND AUXILIARY PROGRAMS, STATUS, REFERENCES, MACHINE REQUIREMENTS, LANGUAGE, OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED, OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS, NAME AND ESTABLISHMENT OF AUTHOR, MATERIAL, CATEGORIES
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| Program name | Package id | Status | Status date |
|---|---|---|---|
| MUENSTER | NEA-0816/01 | Tested | 18-MAY-1984 |
Machines used:
| Package ID | Orig. computer | Test computer |
|---|---|---|
| NEA-0816/01 | IBM 3081 | IBM 3081 |
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3. DESCRIPTION OF PROBLEM OR FUNCTION
MUENSTER is a two dimensional r-z thermohydraulic code. It analyses the thermal performance of pebble bed reactors under normal operating conditions. It calculates the distribution of gas temperature and mass flow. The code determines the surface and maximum temperatures of the pebbles including thermal radiation. Further it evaluates the pressure drop and the fuel and moderator temperatures to be used in neutron spectrum calculations.
MUENSTER is a two dimensional r-z thermohydraulic code. It analyses the thermal performance of pebble bed reactors under normal operating conditions. It calculates the distribution of gas temperature and mass flow. The code determines the surface and maximum temperatures of the pebbles including thermal radiation. Further it evaluates the pressure drop and the fuel and moderator temperatures to be used in neutron spectrum calculations.
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4. METHOD OF SOLUTION
The total coolant flow is distributed along arbitrary mesh lines in the core and bottom reflector. To satisfy the pressure equation a set of fictive circulation flows, super- imposed to the total flow, is calculated by an iterative method. The gas temperature calculation according to the given power density distribution is taken into account. With the known data for power density, gas temperature and gas flow distribution, the temperature distribution in the fuel elements may be calculated. The effect of thermal radiation is included.
The total coolant flow is distributed along arbitrary mesh lines in the core and bottom reflector. To satisfy the pressure equation a set of fictive circulation flows, super- imposed to the total flow, is calculated by an iterative method. The gas temperature calculation according to the given power density distribution is taken into account. With the known data for power density, gas temperature and gas flow distribution, the temperature distribution in the fuel elements may be calculated. The effect of thermal radiation is included.
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6. TYPICAL RUNNING TIME
Less than one minute on IBM 3033 CPU time is required for a typical HTR calculation.
Less than one minute on IBM 3033 CPU time is required for a typical HTR calculation.
NEA-0816/01
NEA-DB executed the test case on IBM 3081K in 7.8 sec of CPU time.[ top ]
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NEA-0816/01, included references:
- THTR 300 Program Description "MUENSTER" (in German).EA-0176 (September 17, 1981).
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NEA-0816/01
| File name | File description | Records |
|---|---|---|
| NEA0816_01.002 | MUENSTER INFORMATION | 56 |
| NEA0816_01.004 | MUENSTER SOURCE PROGRAM (FORTRAN-4) | 3245 |
| NEA0816_01.005 | MUENSTER JCL & OVERLAY INSTRUCTIONS | 81 |
| NEA0816_01.006 | MUENSTER TEST CASE INPUT DATA | 1044 |
| NEA0816_01.007 | MUENSTER TEST CASE PRINTED OUTPUT | 3506 |
Keywords: HTR reactors, fluid flow, fuel elements, gases, pebble bed reactors, pressure gradients, r-z, temperature distribution, thermal radiation, two-dimensional.