IAEA0836 TEMPELS.

1. NAME OR DESIGNATION OF PROGRAM:  TEMPELS (TEMPEST).

3. DESCRIPTION OF PROBLEM OR FUNCTION

Simultaneous temperature and stress analysis in solids of a axisymmetric shape, subject to thermal and mechanical loading, used for fuel elements with fuel -
cladding interaction.

4. METHOD OF SOLUTION

The finite-element body of revolution method in two dimensions is applied, using linear triangular finite elements with nodes at the vertices. The same procedure is used both for temperature and structural computation, and sets of linear equations are obtained to be solved by an iterative method.

5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM:

6. TYPICAL RUNNING TIME

130 seconds on the CDC 6400 for a problem with 840 elements and 490 nodal points.

NEA-DB executed the test case included in this package  on a CDC CYBER 740 computer in 17 seconds of CPU time.

7. UNUSUAL FEATURES OF THE PROGRAM

The use of triangular finite elements permits close approximation to curved boundary shapes, and  simultaneously allows refinements in regions of steepest gradients and inhomogeneities.
The code provides a set of traps to detect errors in mesh input data, both internally and with optional external visual checks of plots generated by graphic facilities.

8. RELATED AND AUXILIARY PROGRAMS

TEMPELS (TEMPEST) code has been composed of a heat conduction code TEMPEL (based on the theory of heat conduction with convective heat tranfer boundary conditions) and a thermal stress analysis code BREL (body of revolution stress code), which can be used also separatly. Some basic ideas are common with the HASSAN code (see Abstract NEA 0547) which is radially dependent for various axial positions and several time steps.

10. REFERENCES

- A. Alujevic et al.,
  "Finite Element Heat Conduction in Reactor Solids"
  Atomkernergie (ATKE) Bd. 31 (1978), Lfg 3, page 151.
- A. Alujevic and P. Skerget,
  "Boundary Conditions of Second and Third Kind in the Computer
  Program TEMPEL"
  Strojniski Vestnik Mechanical Journal, Vol. 24, No. 11-12 (1978)
  (English translation of the leading article).
- A. Alujevic et al.,
  "TEMPEL - A Finite Element Code for Computation of Temperature
  Distributions"
  Strojniski Vestnik Mechanical Journal, Vol. 20, No. 5 (1974)
  (English translation of the leading article).

- A.Alujevic et al.:
  TEMPEST - A Code for Simultaneous Structural and Thermal Analysis.
  Reprint from "Res Mechanica" 1 (1980) 171-177
- A.Alujevic et al.:
  Stresses due to Fuel-Cladding Interaction.
  Reprint from "A.Kuhelj Memorial Volume" 139-151
- A.Alujevic and P. Skerget:
  An Investigation of Fuel Element Pellet-Cladding Interaction by
  Finite Element Methods.
  Reprint from "Nucl.Energy" V.19,2,(1980)117-120
- A.Alujevic and P. Skerget:
  TEMPELS Code Used for Pellet-Cladding Interaction Analysis.
  Reprint from "J.Inst.Nucl.Eng." Vol.22,3,73-75

11. MACHINE REQUIREMENTS:  Core storage 30 K decimal words.

To run the test case on a CDC CYBER 740 computer, 55,500 (octal) words of main storage are required.

13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED:

NOS 1.4-531 (CDC CYBER 740).

14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS:

15. NAME AND ESTABLISHMENT OF AUTHOR

          Dr. A. Alujevic and Dr. P. Skerget
          College of Engineering and Technology
          Faculty of Mech. Eng.
          University of Maribor (YU)

          Mr. B. Eysink
          Submarine Service
          Royal Netherlands Navy
          Den Helder

          Dr. J. Haad
          Imperial College of Science and Technology
          Mech. Eng. Dept.
          University of London (UK)

File name	File description	Records
IAEA0836_02.001	Information file	46
IAEA0836_02.002	JCL	7
IAEA0836_02.003	TEMPELS FORTRAN source program	651
IAEA0836_02.004	TEMPELS sample problem input	4
IAEA0836_02.005	TEMPELS sample problem output	534