# FLX: a shell code for coupled fluid-structure analysis of core barrel dynamics. [PWR; BWR]

## Abstract

The coupled fluid-structure dynamics of a light water reactor core support barrel can be calculated by the K-FIX(3D,FLX) and SOLA-FLX codes. The fluid dynamics is described by the three-dimensional, two-fluid code K-FIX(3D) or the two-dimensional, drift-flux code SOLA-DF. The structural dynamics is described by the three-dimensional, elastic shell code FLX. FLX, which uses an explicit finite-difference solution algorithm to solve the shell equations, is explicitly coupled to the fluid-dynamics codes. Motion may be induced by blowdown, prescribed displacement, or seismic action. A sample calculation is provided for verification.

- Authors:

- Publication Date:

- Research Org.:
- Los Alamos Scientific Lab., NM (USA)

- OSTI Identifier:
- 5671632

- Report Number(s):
- NUREG/CR-0957; LA-7927

TRN: 80-006460

- DOE Contract Number:
- W-7405-ENG-36

- Resource Type:
- Technical Report

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; BWR TYPE REACTORS; REACTOR CORES; COMPUTER CODES; F CODES; PWR TYPE REACTORS; HYDRAULICS; FINITE DIFFERENCE METHOD; HEAT TRANSFER; THERMODYNAMICS; ENERGY TRANSFER; FLUID MECHANICS; ITERATIVE METHODS; MECHANICS; NUMERICAL SOLUTION; REACTOR COMPONENTS; REACTORS; WATER COOLED REACTORS; WATER MODERATED REACTORS; 210200* - Power Reactors, Nonbreeding, Light-Water Moderated, Nonboiling Water Cooled; 210100 - Power Reactors, Nonbreeding, Light-Water Moderated, Boiling Water Cooled

### Citation Formats

```
Dienes, J K, Hirt, C W, Rivard, W C, Stein, L R, and Torrey, M D.
```*FLX: a shell code for coupled fluid-structure analysis of core barrel dynamics. [PWR; BWR]*. United States: N. p., 1979.
Web.

```
Dienes, J K, Hirt, C W, Rivard, W C, Stein, L R, & Torrey, M D.
```*FLX: a shell code for coupled fluid-structure analysis of core barrel dynamics. [PWR; BWR]*. United States.

```
Dienes, J K, Hirt, C W, Rivard, W C, Stein, L R, and Torrey, M D. Thu .
"FLX: a shell code for coupled fluid-structure analysis of core barrel dynamics. [PWR; BWR]". United States.
```

```
@article{osti_5671632,
```

title = {FLX: a shell code for coupled fluid-structure analysis of core barrel dynamics. [PWR; BWR]},

author = {Dienes, J K and Hirt, C W and Rivard, W C and Stein, L R and Torrey, M D},

abstractNote = {The coupled fluid-structure dynamics of a light water reactor core support barrel can be calculated by the K-FIX(3D,FLX) and SOLA-FLX codes. The fluid dynamics is described by the three-dimensional, two-fluid code K-FIX(3D) or the two-dimensional, drift-flux code SOLA-DF. The structural dynamics is described by the three-dimensional, elastic shell code FLX. FLX, which uses an explicit finite-difference solution algorithm to solve the shell equations, is explicitly coupled to the fluid-dynamics codes. Motion may be induced by blowdown, prescribed displacement, or seismic action. A sample calculation is provided for verification.},

doi = {},

journal = {},

number = ,

volume = ,

place = {United States},

year = {1979},

month = {11}

}

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