# Calculation of the 5kW full scale heater test at Stripa with temperature dependent thermal conductivity and expansion coefficient. [Thermal loading effects from waste repository]

## Abstract

The ADINA finite element code was used to make thermo-elastic calculations of the 5kW full scale heater test at Stripa, Sweden. The purpose for doing these calculations was two-fold. First, to see if we could reproduce the results reported by LBL, using the same input parameters, and second, to determine how temperature dependent thermal conductivity and/or expansion coefficients affect the results. LBL used the SAP IV finite element code, and their report shows comparison of various data taken at Stripa with their calculational results. The temperature measurements at different distances at 65 days after start-up, and the stress measurements at a point (1.6 m) from the heater agree quite well with their calculational results. However, relative displacements in the heater midplane shows differences of about a factor of 3-4 between measurement and calculation, with the calculation predicting larger relative displacements. The ADINA calculations were run with axially symmetric geometry. The LBL results were also produced with an axially symmetric thermal-elastic calculation. The ADINA calculation essentially reproduced the LBL calculation results with both results showing much greater displacements than were measured.

- Authors:

- Publication Date:

- Research Org.:
- California Univ., Livermore (USA). Lawrence Livermore Lab.

- OSTI Identifier:
- 6023717

- Report Number(s):
- UCID-18207

- DOE Contract Number:
- W-7405-ENG-48

- Resource Type:
- Technical Report

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; GRANITES; HEATING; RADIOACTIVE WASTE DISPOSAL; UNDERGROUND DISPOSAL; DEFORMATION; FINITE ELEMENT METHOD; GEOLOGY; SIMULATION; THERMAL CONDUCTIVITY; THERMAL EXPANSION; EXPANSION; IGNEOUS ROCKS; MANAGEMENT; NUMERICAL SOLUTION; PHYSICAL PROPERTIES; ROCKS; THERMODYNAMIC PROPERTIES; WASTE DISPOSAL; WASTE MANAGEMENT; 052002* - Nuclear Fuels- Waste Disposal & Storage

### Citation Formats

```
Butkovich, T R.
```*Calculation of the 5kW full scale heater test at Stripa with temperature dependent thermal conductivity and expansion coefficient. [Thermal loading effects from waste repository]*. United States: N. p., 1979.
Web.

```
Butkovich, T R.
```*Calculation of the 5kW full scale heater test at Stripa with temperature dependent thermal conductivity and expansion coefficient. [Thermal loading effects from waste repository]*. United States.

```
Butkovich, T R. Fri .
"Calculation of the 5kW full scale heater test at Stripa with temperature dependent thermal conductivity and expansion coefficient. [Thermal loading effects from waste repository]". United States.
```

```
@article{osti_6023717,
```

title = {Calculation of the 5kW full scale heater test at Stripa with temperature dependent thermal conductivity and expansion coefficient. [Thermal loading effects from waste repository]},

author = {Butkovich, T R},

abstractNote = {The ADINA finite element code was used to make thermo-elastic calculations of the 5kW full scale heater test at Stripa, Sweden. The purpose for doing these calculations was two-fold. First, to see if we could reproduce the results reported by LBL, using the same input parameters, and second, to determine how temperature dependent thermal conductivity and/or expansion coefficients affect the results. LBL used the SAP IV finite element code, and their report shows comparison of various data taken at Stripa with their calculational results. The temperature measurements at different distances at 65 days after start-up, and the stress measurements at a point (1.6 m) from the heater agree quite well with their calculational results. However, relative displacements in the heater midplane shows differences of about a factor of 3-4 between measurement and calculation, with the calculation predicting larger relative displacements. The ADINA calculations were run with axially symmetric geometry. The LBL results were also produced with an axially symmetric thermal-elastic calculation. The ADINA calculation essentially reproduced the LBL calculation results with both results showing much greater displacements than were measured.},

doi = {},

journal = {},

number = ,

volume = ,

place = {United States},

year = {1979},

month = {6}

}