Presentation Type

Contributed

Start Date

19-12-2018 9:00 AM

Keywords

Fast Reactor, Fast Breeder Reactor, Titanium Nanoparticles, Liquid Sodium, Nanofluid, heat transfer coefficient, clad temperature, Flow Blockage, CFD

Abstract

Nanofluids have a great impact on heat transfer characteristics due to increased thermal conductivity and heat transfer coefficient. In this study, Titanium nanoparticles mixed in liquid sodium has been chosen for analyzing the effect of Nanofluid coolant for a Nuclear Sub- assembly. This study is conducted to observe the effect of nanoparticles on the flow properties and heat transfer characteristics such as velocity, heat transfer coefficient, clad temperature, coolant temperature etc. These effects have been observed for varying nanoparticle concentration and different flow blockage sizes. For this study, 7-pin fuel bundle with and without blockage has been modeled and analyzed using computational fluid dynamics (CFD) simulation codes. The basis of this study is an experimental study which showed a reduction in the reactivity of sodium in presence of air when titanium nanoparticles were included. In this study we successfully observe enhancement in the heat transfer characteristics during blockage conditions for different nanoparticle concentration

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Dec 19th, 9:00 AM

Flow and Thermal Effects of Blockages in a Nano-fluid Cooled Nuclear Fuel Subassembly

Nanofluids have a great impact on heat transfer characteristics due to increased thermal conductivity and heat transfer coefficient. In this study, Titanium nanoparticles mixed in liquid sodium has been chosen for analyzing the effect of Nanofluid coolant for a Nuclear Sub- assembly. This study is conducted to observe the effect of nanoparticles on the flow properties and heat transfer characteristics such as velocity, heat transfer coefficient, clad temperature, coolant temperature etc. These effects have been observed for varying nanoparticle concentration and different flow blockage sizes. For this study, 7-pin fuel bundle with and without blockage has been modeled and analyzed using computational fluid dynamics (CFD) simulation codes. The basis of this study is an experimental study which showed a reduction in the reactivity of sodium in presence of air when titanium nanoparticles were included. In this study we successfully observe enhancement in the heat transfer characteristics during blockage conditions for different nanoparticle concentration