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U.S. Department of Energy
Office of Scientific and Technical Information

CYGRO-4 fuel rod analysis computer program (LWBR/AWBA development program)

Technical Report ·
DOI:https://doi.org/10.2172/7255653· OSTI ID:7255653

The CYGRO-4 computer program is an advanced version of the CYGRO program for the analysis of axisymmetric deformations of the cross-section of an oxide fueled rod-type fuel element. CYGRO-4, which replaces the CYGRO-3 program, incorporates improved numerical methods, improved time step control, a new fuel-clad and rod-support interaction model, a new thermal conductivity model for the fuel-clad gap, and a new fuel cracking, crack deformation and crack healing model.

Research Organization:
Bettis Atomic Power Lab., West Mifflin, PA (USA)
DOE Contract Number:
EY-76-C-11-0014
OSTI ID:
7255653
Report Number(s):
WAPD-TM-1300
Country of Publication:
United States
Language:
English