Computer Programs

NEA-1292 HEATHYD.

NEA-1292 HEATHYD.

HEATHYD, Steady-State Thermal Hydraulic Analysis of Low-Enriched U Fuel Reactor

NAME OR DESIGNATION OF PROGRAM, COMPUTER, DESCRIPTION OF PROGRAM 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 AUTHORS, MATERIAL, CATEGORIES

[ top ]

1. NAME OR DESIGNATION OF PROGRAM: HEATHYD.

[ top ]

2. COMPUTERS

To submit a request, click below on the link of the version you wish to order. Rules for end-users are available here.

Program name	Package id	Status	Status date
HEATHYD	NEA-1292/01	Tested	07-DEC-1989

Machines used:

Package ID	Orig. computer	Test computer
NEA-1292/01	Many Computers	Many Computers

[ top ]

3. DESCRIPTION OF PROGRAM OR FUNCTION

HEATHYD is a code for the steady-state heat transfer calculation of research nuclear reactors with forced convection. It models heat transfer and coolant flow for assemblies of parallel fuel plates of MTR type with any axial power distribution.
The thermodynamic model accounts for single phase cooling and sub- cooled boiling condition using the transition criterion of Bergeles- Rosenow. In addition to the calculation of the channel flow velocities and coolant pressure drops, HEATHYD calculates axial distribution of the coolant and clad-surface temperatures. Safety margins to the critical heat flux as a result of burnout condition or flow instability are determined.

[ top ]

4. METHOD OF SOLUTION

Applying the finite difference method, HEATHYD solves the equations of heat conduction and heat transfer to the coolant. For the physical properties of the coolant as a function of the coolant temperature polynomials of degree 6 are used. Depending on the coolant condition, different correlations for the heat transfer coefficient can be applied. The analysis of the critical cooling conditions resulting in burnout or flow instability, is performed according to the correlations developed by Mirshak/ Labuntsov and Forgan/Whittle.

[ top ]

5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM:

[ top ]

6. TYPICAL RUNNING TIME: Five seconds.

NEA-1292/01

NEA-DB ran the test case included in this package on IBM 3090/600 and DEC VAX 8810 computers. CPU times required were less than .5 seconds on IBM and less than 5 seconds on VAX.

[ top ]

7. UNUSUAL FEATURES OF THE PROGRAM

Consideration of axial/ transversal-radial power distribution.

[ top ]

8. RELATED AND AUXILIARY PROGRAMS:

[ top ]

9. STATUS

Package ID	Status date	Status
NEA-1292/01	07-DEC-1989	Tested at NEADB

[ top ]

10. REFERENCES:

NEA-1292/01, included references:

- Liaquat Ali Khan and Rahim Nabbi:
  HEAT-TRANSFER Analysis of the Existing Heu and Proposed Leu Cores
  of Pakistan Research Reactor
  JUEL-2118 (February 1987)
- HEATHYD Manual
  Input Description
  (8 November 1989)

[ top ]

11. MACHINE REQUIREMENTS: IBM-370 series, VAX computers.

NEA-1292/01

348K bytes on IBM 3090.

[ top ]

12. PROGRAMMING LANGUAGE(S) USED

Package ID	Computer language
NEA-1292/01	FORTRAN-IV

[ top ]

13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED: VM/CMS(IBM);
VMS(VAX).

NEA-1292/01

MVS (IBM 3090); VMS (VAX 8810).

[ top ]

14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS:

[ top ]

15. NAME AND ESTABLISHMENT OF AUTHORS

     R. NABBI
     Zentralabteilung Forschungsreaktoren und
     Kerntechnische Betriebe
     Kernforschungsanlage Juelich
     D-5170 JUELICH
     Postfach 1913
     Federal Republic of Germany

[ top ]

16. MATERIAL AVAILABLE

NEA-1292/01

File name	File description	Records
NEA1292_01.001	This information file	73
NEA1292_01.002	HEATHYD Source Program (FORTRAN-77)	929
NEA1292_01.003	IBM-PC Compile-link-run commands	6
NEA1292_01.004	DEC-VAX Compile-link-run commands	9
NEA1292_01.005	IBM-MVS Compile-link-run job contol	101
NEA1292_01.006	Sample Problem Input Data	31
NEA1292_01.007	Sample Problem Printed Output	614
NEA1292_01.008	Description on How to Prepare the Input	89

[ top ]

17. CATEGORIES

H. Heat Transfer and Fluid Flow

Keywords: cladding, convection, coolant loops, fuel elements, heat conduction, heat transfer, hydraulics, steady flow, steady-state conditions, thermodynamics.