Holistic Hydraulic Simulation for Pebble Bed Using Porous Media Approach

Bo Hu, Bing Zhou (), Shanshan Bu, Xinghua Wu and Baoping Gong
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Bo Hu: South-Western Institute of Physics, Chengdu 610041, China
Bing Zhou: South-Western Institute of Physics, Chengdu 610041, China
Shanshan Bu: Key Laboratory of Low-Grade Energy Utilization Technologies & System, Chongqing University, Chongqing 400044, China
Xinghua Wu: South-Western Institute of Physics, Chengdu 610041, China
Baoping Gong: South-Western Institute of Physics, Chengdu 610041, China

Energies, 2024, vol. 17, issue 14, 1-15

Abstract: The porous media approach is regarded as an appropriate methodology for hydraulic simulations of complex pebble beds in fusion reactors. In order to determine the parameters (permeability α and inertial loss coefficient C) of the porous media accurately, two methods are proposed: the correction method and the fitting method. In this paper, a single-channel model with sequentially packed pebbles is constructed in order to obtain the pressure drop gradient against superficial velocities. Two methods, the correction method and fitting method, are employed to determine the permeability and inertial loss coefficient, and the results are evaluated with comparisons. Based on the results, both the correction method and fitting method are deemed feasible for the parameter determinations. In consideration of the consumption of resources and time for simulation, the fitting method is recommended during the preliminary design phase to shorten the duration of design, while the correction method is suggested to obtain precise results when the design is accomplished. Both of the methods would be evaluated with the data obtained from experiments in the future.

Keywords: porous media approach; correction method; fitting method; sequentially packed pebble bed; CFD; helium cooled blanket (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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