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중고의류시장의 환경가치 및 최적의 서비스 구축 연구 - 국내를 중심으로
허효원(Hyo Won Heo),최명식(myong shik Choi) 경희대학교 산학협력단 예술디자인연구원 2016 예술· 디자인학연구 Vol.19 No.1
This study has been written by a writer who had great interest in the appearance of fast fashion, the shift of generation towards comsumption generation and the increase of the number of clothes discarded in order to study the environmental role of secondhand clothes. The shift in generation towards consumption generation and the appearance of fast fashion has altered the vogue rapidly and in the market that adapts to the fast trend, it changes the fashion suited to the trend. Accordingly, the number of unused clothes increases due to the fast change resulting in clothes ending up as discarded or secondhand clothes. Recycling the secondhand clothes is a practical and environmental method that can be well applied. Thhe current secondhand clothes market is quite active. However due to the limitation of inconvenience and narrow range of trading, a more embracing and broad trade market is needed. People spend a higher return on buying used clothing is high old age , according to the relevant academic information used clothing that is shown to still prefer the offline market . It is important to come to the leading web -based and mobile services. They are mainly active in the first generation haeteotgo hand clothes market was developed in the offline market, currently 20 30s and through the second generation owned garment trading activities generation via the Web through mobile third-generation hand clothes market .…
3차원 캐버티 표면의 스톡스 유동 가시화 및 수치해석을 통한 표면 특성 연구
허효원(Hyo Weon Heo),이헌덕(Heon-deok Lee),정원혁(Won Hyuk Jung),조동식(Dong Sik Cho),서용권(Yong Kweon Suh) 한국가시화정보학회 2011 한국가시화정보학회지 Vol.9 No.3
?;?;In this study, we propose a method for characterizing fluid-mechanical properties of a fluid surface, such as surface dilatational and shear viscosity, by matching the flow visualization and the numerical simulation for a stokes flow in a three-dimensional cavity. The surface flow is driven by shear stress exerted on the free surface by an external gas flow. The external gas flow is simulated by using a commercial code, while the Stokes flow is calculated by an in-house code. We have found that the surface flow is very sensitive to the surface tension and other properties. The qualitative feature of the surface flow can be reproduced by the parameter tuning.
액체의 표면 특성을 고려한 3차원 캐버티 내부의 스톡스 유동 특성 연구
허효원(Hyo Weon Heo),정원혁(Won Hyuk Jung),서용권(Yong Kweon Suh) 한국전산유체공학회 2011 한국전산유체공학회 학술대회논문집 Vol.2011 No.5
In this study, a CFD code is developed to perform simulation of the surface and internal flow of a three-dimensional rectangular cavity driven by an external gas flow. Investigated in this study are surface characteristic such as surface tension, surface dilational viscosity(or surface elasticity), and surface viscosity. Visualization of the surface of water is performed to compare with the numerical results obtained with the developed in-house code. We have found that the surface flow is very sensitive to the surface tension and other configurations. The surface flow velocity obtained from the numerical solution is lower than the experimental result.
3D 프린터를 활용한 수직축 헬리컬형 풍력 발전기의 설계 및 제작
김미래(Mirae Kim),이현아(Hyeon A Lee),이연주(Yeon Ju Lee),허효원(Hyo Won Heo),김경천(Kyung Chun Kim) 대한기계학회 2015 대한기계학회 춘추학술대회 Vol.2015 No.11
Design and fabrication of wind turbine have been investigated. As a component of wind turbine, the vertical type wind turbine with helical blades was designed. CFD analysis has performed with the 3D blade model. Small size blades were manufactured using a 3D printer. The performance of the assembled wind turbine was evaluated by the CFD analysis. It is confirmed that the rated power is well agreed with the design parameters. The concept of wind turbine can be applied as a high performance wind power generation system especially in urban environment considering landscape with the limited area.