• Journal of the Korea Convergence Society
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• v.11 no.10
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• pp.219-224
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• 2020

Industrial mixers to homogeneously blend particulate materials have been developed and widely used in various industries. However, most industrial mixers have at most two-degree-of-freedom for the operation, which limits the range of operation parameter selection for optimal blending. This paper proposes a multi-degree-of-freedom robotic mixer designed by converging a conventional drum blender and a robotic manipulator and evaluated its performance in a virtual operating environment. Discrete element simulations were conducted for mixing performance evaluation. The numerical results showed that the proposed mixer design exhibits a better mixing performance than conventional ones.

• 유체기계공업학회:학술대회논문집
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• 2001.11a
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• pp.460-465
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• 2001

In the present study, steady and unsteady flow characteristics inside an industrial mixer with flat turbine type impeller are studied. For the flow analysis, STAR-CD is used with an automatic mesh generator developed in the present study. flow results are compared to the an available experimental data to show validity or the present simulation.

• Proceedings of the KSME Conference
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• 2005.11a
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• pp.73.2-73.2
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• 2005

• Proceedings of the Korean Society of Marine Engineers Conference
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• 2006.06a
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• pp.325-326
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• 2006

현 화학플랜트에서 사용되고 있는 ABS 수지 응집 공정의 경우 교반기 내부의 불균일한 유동분포와 유동메커니즘의 문제점은 공정 제품의 생산성을 저하 시키는 원인으로 작용하고 있다. 그러나 우수한 성능의 산업용 교반기를 설계하기 위해선 반드시 교반성능에 영향을 미치는 다양한 내부의 유동특성의 정량적인 실험 데이터 확보가 필요하나, 3차원적 비정상 특성을 나타내는 복잡한 구조의 내부 유동특성에 관한 정량적 해석은 현재까지도 상당한 어려운 문제로 남아있다. 이에 이런 문제점을 개선하여 생산성을 향상시키기 위해서는 PIV 기법을 이용한 교반기 내부의 유동분포와 유동메커니즘을 규명하여 교반기 내부의 최적화된 유동을 형성시키는 임펠러의 형상을 개발하고자 한다.

• Proceedings of the KSME Conference
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• 2002.08a
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• pp.627-630
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• 2002

In the present study a mesh generation program is developed for the flow analysis of industrial mixers. With this program one can select various design parameters such as impeller types, vessel type, number of baffles, number of blades, blade pitched angle, stages of impeller, rotational speed etc. Post processing capabilities are also imbedded in the program. Along with brief explanation of the program, examples of flow simulation for various type of mixers by using the program are also presented to show effectiveness of the program. It is expected that this program can be used to understand the effect of design parameters on the performance of particular type of the mixer, and hence to achieve the optimal design.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.2
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• pp.611-616
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• 2011

Two kinds of structural analysis on the shape of the impeller models, and the natural frequency, harmonic vibration analysis is performed on the shape of the impeller and the resonant frequency of the local analysis of vulnerable areas by ensuring the structural stability of the shape of the impeller evaluation.

• 유체기계공업학회:학술대회논문집
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• 2006.08a
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• pp.471-474
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• 2006

The Mixer is apparatus that help precipitation or an inhomogeneous distribution of various phases to be mixed and that user makes necessary material mixing one or the other. Mainly the mixer which is used from chemical and food industry is very important system in engineering that mixes the material. The inside flow of the mixer under the actual states which put a basis in flow of the fluid is formed rotation of the impeller. The inside flow of impeller will be caused by various reasons change with shape of impeller, number of rotation, mixing material and flow pattern of free surface etc. Also mixer study depended in single-phase flow and experimental research. So the numerical analysis of flow mixing solid-fluid particle is simulated. It is become known, that the case where agitator inside working fluid includes the solid particle the sinkage reverse which the solid particle has decreases an agitation efficiency. From the research which it sees the hazard solid which examines the effect where the change of the sinkage territory which it follows agitation number of revolution and diameter of the particle goes mad to an agitator inside flow distribution - numerical analysis the inside flow distribution of liquid state with Eulerian Two-Phase Method.

• Journal of Advanced Marine Engineering and Technology
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• v.31 no.6
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• pp.797-803
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• 2007

The Industrial Mixers are used in various industrial fields where they are necessary to intimately mix two reactants in a short Period of time. However. despite their widespread use, complex unsteady flow characteristics of industrial mixers are not systematically investigated. The present study aims for clarify unsteady flow characteristics Induced by various impellers in a tank. Impellers are pitched blade turbine(PBT) types, Screw type and Rushton turbine type. In this study choice of the industrial mixer's impeller type using PIV and CFD method. The rotating speed of impellers are fixed by 100RPM.

• Journal of Advanced Marine Engineering and Technology
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• v.30 no.3
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• pp.413-419
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• 2006

The Industrial Mixers are used in various industrial fields where they are necessary to intimately mix two reactants in a short period of time. However, despite their widespread use, complex unsteady flow characteristics of industrial mixers are not systematically investigated. The present study aims for clarify unsteady flow characteristics induced by various impellers in a tank. Impellers are pitched blade turbine(PBT) types. Screw type and Rushton turbine type. In this study choice of the Industrial Mixer's Impeller type for distribution of concentration and PIV measurement method. The rotating speed of impellers are fixed by 100RPM.

• 유체기계공업학회:학술대회논문집
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• 2003.12a
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• pp.678-683
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• 2003

Mixers are used in various industrial fields where it is necessary to intimately mix two reactants in a short period of time. However, despite their widespread use, complex unsteady flow characteristics of industrial mixers are not systematic investigated. The present study aimed to clarify unsteady flow characteristics induced by various impellers in a tank. Impellers are pitched blade turbine and neo-hydrofoil turbine types. A high speed CCD camera and an Ar-Ion laser for illumination were adopted to clarify the time-dependent flow characteristics of the mixers. The rotating speed of impellers increased from 6Hz to 60Hz by 6Hz. The maximum velocity around PBT impeller is higher than the hydrofoil type impeller. These two types of turbine shows that typical flow characteristics of axial turbine and suitable for mixing high -viscosity materials.