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Proceedings of the 24th National and 2nd International ISHMT-ASTFE Heat and Mass Transfer Conference (IHMTC-2017)

ISSN: 2688-7231 (Online)

CFD Analysis of Post-Blowdown Thermal Behavior of a 19-Pin Fuel Bundle

Rohit Kumar
Indian Institute of Technology Roorkee, India

Manish Mishra
Aerodynamics Visualization and Thermal Analysis Research (AVTAR) Laboratory, Department of Mechanical and Industrial Engineering, Indian Institute of Technology Roorkee, Uttarakhand-247667, India

Pradeep Kumar Sahoo
Dept. of Mechanical and Industrial Engg., IIT Roorkee, Roorkee, Uttarakhand, India

Onkar S. Gokhale
Reactor Safety Division, Bhabha Atomic Research Centre, Mumbai, India

Deb Mukhopadhyay
Reactor Safety Division, Bhabha Atomic Research Centre, Mumbai, Maharashtra, India

DOI: 10.1615/IHMTC-2017.690
pages 507-511

Abstract

A Computational Fluid Dynamics (CFD) simulation of 19-pin fuel bundle has been performed in Ansys Fluent 17.0 to develop a post-blowdown modeling of Indian Pressurized Heavy Water Reactor (IPHWR) fuel bundle for the case of a large break loss of coolant accident (LBLOCA). Simulation has been performed at high temperature and at low steam flow rate with different decay power of fuel rod. This resembled the case of a severe accident such as loss of coolant accident (LOCA) with the failure of emergency core cooling system (ECCS). The results are presented for the temperature of pressure tube (PT), steam and fuel elements of different ring along the test section at different decay power (0.5%, 1%, 2% and 5%).

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