Simulations of mixing in the pebble flow of a pebble bed HTR

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Abstract

The pebbles flowing in a pebble bed high temperature gas cooled reactor (HTR) mix between channels as they flow through the reactor, which may affect the reactor parameters such as the power peak factor. This paper describes a method to model the pebble mixing. This mixing model is added to the VSOP code to model the pebble mixing in the pebble bed. This new code package can simulate the pebble mixing between flow channels with a specified mixing coefficient in a coupled model of the pebble flow, physics, thermal hydraulics and burnup. Therefore, the model can be used to investigate the effect of pebble mixing on the core burnup distribution, power distribution and other characteristics. This code is a powerful tool for analyzing HTR operating characteristics and uncertainty.

Keywords pebble bed high temperature gas cooled reactor (HTR) pebble flowing mix flow uncertainty

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Issue Date: 15 May 2014

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	Chen HAO
	Fu LI
	Jiong GUO

Cite this article:

Chen HAO,Fu LI,Jiong GUO. Simulations of mixing in the pebble flow of a pebble bed HTR[J]. Journal of Tsinghua University(Science and Technology), 2014, 54(5): 624-628.

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http://jst.tsinghuajournals.com/EN/ OR http://jst.tsinghuajournals.com/EN/Y2014/V54/I5/624

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