Myung-Ho Song

Korea Atomic Energy Research Institute

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Sung-Sik Kang

Korea Institute of Nuclear Safety

Kyung-Cho Kim

Korea Institute of Nuclear Safety

Seongin Moon

Korea Atomic Energy Research Institute

Yoon‐Suk Chang

Kyung Hee University

Young‐Hwan Choi

Korea University

Hae-Dong Chung

Korea Institute of Nuclear Safety

Sang-Yong Lee

Samsung (South Korea)

Jinho Lee

Fraunhofer Institute for Cognitive Systems

Ho‐Sang Shin

Kongju National University

Sung-Jin Song

Sungkyunkwan University

Cooperative Institutions

European Organization for Nuclear Research

A. Alikhanyan National Laboratory

Seoul National University

Dongguk University

Korea Institute of Nuclear Safety

Korea Advanced Institute of Science and Technology

Sungkyunkwan University

Korea Atomic Energy Research Institute

Samsung (South Korea)

Istituto Nazionale di Fisica Nucleare, Sezione di Cagliari

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A Study of Effective Stereo Matching Method for Long-Wave Infrared Camera Module

World Academy of Science, Engineering and Technology, International Journal of Electronics and Communication Engineering (2017)

Hyun-Koo Kim Yong-Hun Kim Yong‐Hoon Kim Ju Hee Lee Myung-Ho Song

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A model for radiative cooling of a semitransparent molten glass jet

Myung-Ho Song Kevin Ball T. L. Bergman

centerline-to-surface glass temperature distributions are determined for different processing conditions. Comparisons are also made between the semitransparent predictions, which are based on a spectral discrete ordinates model, and predictions for an opaque medium.

Opacity

Radiative Cooling

10.2172/761568

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Experimental Research on the measurement of the Boil-off gas during gas hydrate transfer

한국신재생에너지학회 학술대회논문집 (2013)

Hyenjong Lee Myung-Ho Song Sang-Yong Lee

Clathrate hydrate

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Feasibility of Bladder Compression Molded Prepreg as Small Wind Turbine Blade Material

Journal of the Computational Structural Engineering Institute of Korea (2020)

Bo-Gun Yi Seong-Won Seo Myung-Ho Song

풍력터빈 블레이드는 바람의 운동에너지를 축일로 변환하는 장치로서 상대적으로 고속 회전하면서 양력과 항력의 다양한 하중 조합과 진동에 견딜 수 있도록 내구 강도가 큰 경량의 재료를 선택하여 강성을 증가시키는 구조를 갖도록 설계되어야 한다. 본 연구는 CFRP 프리프레그를 사용하여 소형 풍력 블레이드를 제작하는 경우 공정 시간을 단축하는 기술을 개발하려는 목적으로 수행되었다. QBlade 수치해석 프로그램을 사용하여 블레이드의 형상을 결정하였다. 주어진 풍속에서 바람에 의해 부가되는 양력과 항력을 계산하는 유체역학 수치해석을 수행하고, 대표적인 블레이드 구조에 대해 블레이드 외피 재료에 가해지는 폰미세스 응력을 예측하는 재료역학 수치해석을 수행하였다. 인장 강도 시험의 불확실도를 개선하기 위해 ASTM D638 규정을 수정하여 새로운 시편의 형상을 제안하였고, 기존 형상의 인장 강도와 유사한 평균값을 얻되 파단 위치의 재현성이 향상됨을 확인하였다. 일련의 실험을 통해 소형 풍력 블레이드의 제작에 블래더 가압 방식을 적용하면 충분한 내구 강도를 확보하면서 공정시간을 단축할 수 있음을 확인하였다.

10.7734/coseik.2020.33.2.95

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A new gas hydrate formation/dissociation equipment using the oscillation chamber with static mixer

한국신재생에너지학회 학술대회논문집 (2013)

Ingee Jung Sang-Yong Lee Myung-Ho Song

Clathrate hydrate

Oscillation (cell signaling)

Static mixer

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Numerical a nalysis on the flow, heat t ransfer and phase change characteristic of wood-flour-filled polypropylene melt in an extrusion die

Seung Hwan Ko H.G. Park Myung-Ho Song

Polypropylene

Heat flow

Extrusion moulding

Die swell

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Preliminary Round Robin Test(RRT) for Program for the Inspection of Nickel Alloy Components(PINC)

비파괴검사학회지 (2009)

Kyung-Cho Kim Sung-Sik Kang Ho‐Sang Shin Myung-Ho Song Hae-Dong Chung

After several PWSCCs were found in Bugey(France), Ringhals(Sweden), Tihange(Belgium), Oconee, Arkansas, Crystal Fever, Davis-Basse, VC Summer(U.S.A.), Thuruga(Japan), USNRC and PNNL started the research on PWSCC, that is, the PINC project. USNRC required KINS to participate in the PINC project in May 2005. KINS organized the Korean consortium at March 2006 and Pre-RRT for RVHP were performed for the preparation of PINC RRT. Through these preliminary RRT, Korea NDE teams can learn and develop the detection and sizing technique for RVHP dissimilar metal weld. These techniques are now being prepared in Korea and need to be utilized for the In-service inspection of the RVHP and BMI of Korea Nuclear Power Plants. PINC RRT mock-ups will be helpful to training.

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Preliminary Round Robin Test(RRT) for Program for the Inspection of Nickel Alloy Components(PINC) - Reactor Vessel Head Penetration (RVHP) -

Journal of the Korean Society for Nondestructive Testing (2009)

Kyung-Cho Kim Sung-Sik Kang Ho‐Sang Shin Myung-Ho Song Hae-Dong Chung

Round robin test

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NUMERICAL ANALYSIS OF NON-EQUILIBRIUM HYDRATE PELLET DECOMPOSITION

Journal of computational fluids engineering (2008)

Jung-Ho Kang Jin-Hyun Nam Charn-Jung Kim Myung-Ho Song

The prediction of hydrate pellet decomposition characteristics is required to design the regasification process of GTS (gas to solid) technology, which is considered as an economic alternative for LNG technology to transport natural gas produced from small and stranded gas wells. Mathematical model based on the conservation principles, the phase equilibrium relation, equation of gas state and phase change kinetics was set up and numerical solution procedure employing volume averaged fixed grid formulation and extended enthalpy method are implemented. Initially, porous methane hydrate pellet is at uniform temperature and pressure within hydrate stable region. The pressure starts to decrease with a fixed rate down to the final pressure and is kept constant afterwards while the bounding surface of pellet is heated by convection. The predicted convective heat and mass transfer accompanied by the decomposed gas flow through hydrate/ice solid matrix is reported focused on the comparison of spherical and cylindrical pellets having the same effective radius.

Pellet

Clathrate hydrate

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Numerical Analysis on the Flow and Heat Transfer Characteristic of Wood-flour-filled Polypropylene Melt in an Extrusion Die

Transactions of the Korean Society of Mechanical Engineers B (2003)

Seung Hwan Ko Hyung Gyu Park Myung-Ho Song Charn-Jung Kim

A three-dimensional numerical analysis of the flow and heat transfer characteristic of wood-flour-filled polypropylene melt in an extrusion die was carried out. Used for this analysis were Finite Concept Method based on FVM. unstructured grid and non-Newtonian fluid viscosity model. Temperature and flow fields are closely coupled through temperature dependent viscosity and viscous dissipation. With large Peclet, Nahme, Brinkman numbers, viscous heating caused high temperature belt near die housing. Changing taper plate thickness and examining some predefined parameters at die exit investigated the effect of taper plate on velocity and temperature uniformities. In the presence of taper plate、uniformity at die exit could be improved and there existed an optimum thickness to maximize it.

Polypropylene

Péclet number

Extrusion moulding

10.3795/ksme-b.2003.27.2.147

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