Effects of Design Parameters of Mixer Blades on Particle Mixing Performance

Seon-Pil Hwang; Sanghyun Park; Dongwoo Sohn

doi:10.7734/COSEIK.2017.30.4.363

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2017 Vol.30, Issue 4 Preview Page

Effects of Design Parameters of Mixer Blades on Particle Mixing Performance 혼합기 블레이드 설계변수에 따른 입자의 혼합성능 연구

2017. pp. 363-370

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Abstract

This paper is concerned with the evaluation of mixing performance of a particle mixer, which consists of a vertical cylindrical vessel and a rotating impeller with several blades. We consider four design variables for the mixer blades, such as the angle, length, and number of blades, and the gap between the blades and the vessel bottom. The particle mixing process due to the impeller rotation is simulated using the discrete element method, and the mixing performance is quantitatively evaluated by introducing a mixing index. Analyzing the main effects and interactions of the four design variables through the design-of-experiments approach, it is concluded that the blade angle has the most dominant influence on the mixing performance whereas the gap has no significant influence. In addition, we determine the best combination of design parameters to maximize the mixing performance.

Keywords

blade design

particle mixing

mixing index

discrete element method

design of experiments

본 논문에서는 원통형 혼합기를 대상으로 블레이드의 각도, 길이, 개수 및 블레이드와 탱크 바닥과의 간극을 설계변수로 선정하고, 각각의 설계변수가 혼합성능에 미치는 영향을 분석하였다. 이산요소법을 이용하여 임펠러 회전에 의한 고체 입자 의 혼합공정을 해석하였으며, 혼합지수를 도입하여 혼합성능을 정량적으로 평가하였다. 다양한 설계변수의 조합을 고려한 실험계획법으로 설계변수의 주효과와 교호작용을 분석함으로써, 블레이드 각도가 입자의 혼합성능에 가장 지배적인 영향을 미치며 간극의 영향은 상대적으로 작다는 결론을 도출할 수 있었다. 또한 가장 우수한 혼합성능을 보이는 설계변수의 조합 을 제시하였다.

키워드

블레이드 설계

입자혼합

혼합지수

이산요소법

실험계획법

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Information

Publisher :Computational Structural Engineering Institute of Korea
Publisher(Ko) :한국전산구조공학회
Journal Title :Journal of the Computational Structural Engineering Institute of Korea
Journal Title(Ko) :한국전산구조공학회 논문집
Volume : 30
No :4
Pages :363-370
Received Date : 2017-07-12
Revised Date : 2017-07-19
Accepted Date : 2017-07-20
DOI :https://doi.org/10.7734/COSEIK.2017.30.4.363

Journal of the Computational Structural Engineering Institute of Korea ISSN:1229-3059(Print) 2287-2302(Online) 한국전산구조공학회 논문집

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