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

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

doi:10.1016/j.jmatprotec.2018.06.012

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

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

ENV - Frontier Science for Advanced Environment

Research output: Contribution to journal › Article

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 language	English
Pages (from-to)	164-172
Number of pages	9
Journal	Journal of Materials Processing Technology
Volume	261
DOIs	https://doi.org/10.1016/j.jmatprotec.2018.06.012
Publication status	Published - 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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10.1016/j.jmatprotec.2018.06.012

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Yamamoto, T., Suzuki, A., Komarov, S. V., & Ishiwata, Y. (2018). Investigation of impeller design and flow structures in mechanical stirring of molten aluminum. Journal of Materials Processing Technology, 261, 164-172. https://doi.org/10.1016/j.jmatprotec.2018.06.012

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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.",

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author = "Takuya Yamamoto and Aire Suzuki and Komarov, {Sergey V.} and Yasuo Ishiwata",

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AU - Suzuki, Aire

AU - Komarov, Sergey V.

AU - Ishiwata, Yasuo

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KW - Mechanical stirring

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