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

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)31-40
Number of pages10
JournalProgress in Nuclear Energy
Volume64
DOIs
Publication statusPublished - 2013

Keywords

  • Aspect ratio
  • Bubble shape
  • Fundamental research
  • MPS method
  • Terminal velocity
  • Two phase flow

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Nuclear Energy and Engineering
  • Waste Management and Disposal
  • Safety, Risk, Reliability and Quality

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