Two-dimensional numerical simulation of single bubble rising behavior in liquid metal using moving particle semi-implicit method

Juanli Zuo, Wenxi Tian*, Ronghua Chen, Suizheng Qiu, Guanghui Su

*この研究の対応する著者

研究成果: Article査読

31 被引用数 (Scopus)

抄録

Gas-lift pump in liquid metal cooling fast reactor (LMFR) is an innovative conceptual design to enhance the natural circulation ability of reactor core. The two phase flow characteristics of gas-liquid metal make significant improvement of the natural circulation capacity and reactor safety. It is important to study bubble flow in liquid metal. In present study, the rising behaviors of a single nitrogen bubble in 5 kinds of common stagnant liquid metals (lead bismuth alloy (LBE), liquid kalium (K), sodium (Na), potassium sodium alloy (Na-K) and lithium lead alloy (Li-Pb)) and in flowing lead bismuth alloy have been numerically simulated using two-dimensional moving particle semi-implicit (MPS) method. The whole bubble rising process in liquid was captured. The bubble shape, rising velocity and aspect ratio during rising process of single nitrogen bubble were studied. The computational results show that, in the stagnant liquid metals, the bubble rising shape can be described by the Grace's diagram, the terminal velocity is not beyond 0.3 m/s, the terminal aspect ratio is between 0.5 and 0.6. In the flowing lead bismuth alloy, as the liquid velocity increases, both the bubble aspect ratio and terminal velocity increase as well. This work is the fundamental research of two phase flow and will be important to the study of the natural circulation capability of Accelerator Driven System (ADS) by using gas-lift pump.

本文言語English
ページ(範囲)31-40
ページ数10
ジャーナルProgress in Nuclear Energy
64
DOI
出版ステータスPublished - 2013

ASJC Scopus subject areas

  • エネルギー工学および電力技術
  • 原子力エネルギーおよび原子力工学
  • 廃棄物管理と処理
  • 安全性、リスク、信頼性、品質管理

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