Investigation of impeller design and flow structures in mechanical stirring of molten aluminum

Takuya Yamamoto, Aire Suzuki, Sergey V. Komarov, Yasuo Ishiwata

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

This study investigated the flow characteristics of aluminum melt agitated by differently shaped impellers. A typical impeller used in the aluminum industry has twisted blades. The present study examined the effect of twisting angle on the flow pattern through PIV experiments and numerical simulation using water model. The results revealed that the twisting angle affects the strength and direction of discharge flow. The strength of discharge flow became weaker with increasing the twisting angle while the flow direction was influenced by both the front blade surface of impeller and space interval between the adjacent blades. The structure of trailing vortices was found to be also varied depending on the impeller twisting angle.

Original languageEnglish
Pages (from-to)164-172
Number of pages9
JournalJournal of Materials Processing Technology
Volume261
DOIs
Publication statusPublished - 2018 Nov

Keywords

  • Aluminum melting furnace
  • CFD
  • Casting
  • LES
  • Mechanical stirring
  • OpenFOAM
  • PIV experiment

ASJC Scopus subject areas

  • Ceramics and Composites
  • Computer Science Applications
  • Metals and Alloys
  • Industrial and Manufacturing Engineering

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