FLX: A Shell Code for Coupled Fluid-Structure Analysis of Core Barrel Dynamics

Technical Report · Thu Nov 01 00:00:00 EST 1979

DOI:https://doi.org/10.2172/5671632· OSTI ID:5671632

Dienes, J. K. ^[1]; Hirt, C. W. ^[1]; Rivard, W. C. ^[1]; Stein, L. R. ^[1]; Torrey, M. D. ^[1]

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1. Los Alamos Scientific Laboratory (LASL), Los Alamos, NM (United States)

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.

• Research Organization: Los Alamos Scientific Laboratory (LASL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE; USNRC
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 5671632
• Report Number(s): LA--7927; NUREG/CR-0957
• Country of Publication: United States
• Language: English

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