Some theoretical and computational aspects of a simplified subchannel model
Some recently obtained results are presented concerning the qualitative behavior of solutions to equations governing a simplified subchannel model for reactor hydrodynamics. The model describes time-independent flow of an incompressible fluid in two parallel, interconnected channels, subject to axial and lateral pressure drops defined by a Darcy friction factor. The phase portrait for the system of ordinary differential equations is presented, a solution to a boundary-value problem describing flow blockage is discussed, and the effect of the qualitative behavior of solutions on their numerical approximation is examined. The study was undertaken to determine the cause of numerical difficulty in approximating solutions to problems.
- Research Organization:
- EG and G Idaho, Inc., Idaho Falls (USA)
- DOE Contract Number:
- AC07-76ID01570
- OSTI ID:
- 6313676
- Report Number(s):
- EGG-M-29482; CONF-830304-20; ON: DE83010402
- Resource Relation:
- Conference: American Nuclear Society topical conference on computational methods, Salt Lake City, UT, USA, 28 Mar 1983
- Country of Publication:
- United States
- Language:
- English
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