HTGR Knowledge Base

Conference Article: Modelling of the HTTR in Flownet

P. Rousseau and G. P. Greyvenstein, School of Mechanical & Materials Engineering, Faculty of Engineering, Potchefstroom University, South Africa

Abstract

Flownet is a user-friendly software package allowing the dynamic simulation of mass, momentum and energy transfer in thermal-fluid networks integrated with controllers. It is currently used extensively in the modelling and design of the South African Pebble Bed Modular Reactor (PBMR) power plant. The code was recently extended to include a model for the High Temperature engineering Test Reactor (HTTR) that is currently being demonstrated by Japan Atomic Energy Research Institute (JAERI). This paper describes the thermal network and flow path discretization that is used to simulate the physical geometry of the reactor core for the simultaneous solution of the governing equations in the fluid passages and solid structures. The numerical integration and solution scheme for the equations are discussed in an accompanying paper. The current paper also shows results of a preliminary steady-state sample calculation.

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key words: Gas Cooled Reactor, Nuclear Technology
Reference:
Proceedings of the Conference on High Temperature Reactors, Petten, NL, April 22-24, 2002
Organized by HTR-TN in cooperation with the European Nucler Society (ENS) and the IAEA
International Atomic Energy Agency, Vienna (Austria)
HTR-2002, pp:1-5