Numerical Analysis of Liquid Potassium Flow and Heat Transfer in a Core for Space Nuclear Reactor Based on Entransy Dissipation TheorySource: Journal of Thermal Science and Engineering Applications:;2023:;volume( 015 ):;issue: 006::page 61010-1DOI: 10.1115/1.4062156Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The research on the flow and heat transfer of alkali metals is an important technical means to strengthen the heat transfer of the core. In this paper, the 15 cooling channels with different structures are established. Under Re = 2.85 × 104–2.17 × 105, several operating parameters, such as core inlet temperature (T = 350 K, 390 K, 450 K, 550 K, 850 K), fuel rod pitch ratio (P = 1.2, 1.4, 1.6, 1.8, 2.0), and channel shape (triangle and square) on the heat transfer performance are numerically simulated. At the same time, this work introduces an evaluation criterion, entransy dissipation, to measure the irreversibility of the heat transfer process. The results show that the triangular channel has a stronger heat transfer capacity than the square. And the increase of the rod diameter ratio is a positive means to enhance the heat transfer. Among the studied channels, Model “I” (triangle channel, P = 2.0) has the best heat transfer performance. The above results have some guiding value to realize core heat transfer enhancement by adjusting fuel rod arrangement.
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contributor author | Sun, Qi-Qi | |
contributor author | Zhang, Hao-Chun | |
contributor author | Sun, Zi-Jian | |
date accessioned | 2023-08-16T18:07:46Z | |
date available | 2023-08-16T18:07:46Z | |
date copyright | 4/3/2023 12:00:00 AM | |
date issued | 2023 | |
identifier issn | 1948-5085 | |
identifier other | tsea_15_6_061010.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl1/handle/yetl/4291468 | |
description abstract | The research on the flow and heat transfer of alkali metals is an important technical means to strengthen the heat transfer of the core. In this paper, the 15 cooling channels with different structures are established. Under Re = 2.85 × 104–2.17 × 105, several operating parameters, such as core inlet temperature (T = 350 K, 390 K, 450 K, 550 K, 850 K), fuel rod pitch ratio (P = 1.2, 1.4, 1.6, 1.8, 2.0), and channel shape (triangle and square) on the heat transfer performance are numerically simulated. At the same time, this work introduces an evaluation criterion, entransy dissipation, to measure the irreversibility of the heat transfer process. The results show that the triangular channel has a stronger heat transfer capacity than the square. And the increase of the rod diameter ratio is a positive means to enhance the heat transfer. Among the studied channels, Model “I” (triangle channel, P = 2.0) has the best heat transfer performance. The above results have some guiding value to realize core heat transfer enhancement by adjusting fuel rod arrangement. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Numerical Analysis of Liquid Potassium Flow and Heat Transfer in a Core for Space Nuclear Reactor Based on Entransy Dissipation Theory | |
type | Journal Paper | |
journal volume | 15 | |
journal issue | 6 | |
journal title | Journal of Thermal Science and Engineering Applications | |
identifier doi | 10.1115/1.4062156 | |
journal fristpage | 61010-1 | |
journal lastpage | 61010-14 | |
page | 14 | |
tree | Journal of Thermal Science and Engineering Applications:;2023:;volume( 015 ):;issue: 006 | |
contenttype | Fulltext |