병원건축의 색채계획에 관한 실태조사연구

최승희 又石大學校 1997 論文集 Vol.19 No.-

This stady is aimed at trying to be a guideline that may change successfully color appearances of the interior hospitals in the future. This purpose will be obtained by analyzing through circumstances research about how was employed the colors's environments that has exerted beneficial influence upon patients. This study intends to offer basic data which will become it's guideline after comparatively evalueating the color plan of the facilities that is the main causes in fluencing on color choice and usuage of the best materials. First of all talking about researching the present conditions of recently esthospitals, general hospitals and university hospitals giving a example of some their facilities's color usuage the method to be fallowed in this study intends to offer the color types in each hospital. In conclusion puts together synthetically every thing that was found in each study. For newly planned institutions, a prerequisite is an understanding of the architectural function and proposed color plan. As in existing facilities, and understanding of the function of each area of the hospital is essential. In conclusion puts together synthetically every thing that was found in each study mentioned above and gives reasons for this guideline that plans with principle a better color plan of the interior hospitals in the future.

고속철도 터널출구로부터 방출되는 충격성 소음에 관한 모형실험

김희동,이종수,신현승 安東大學 1995 安東大學 論文集 Vol.17 No.1

As a railway train enters a tunnel at high speed, a compression wave is formed in front of the train and propagates along the tunnel. The compression wave subsequently emerges from the exit of the tunnel and generates a pulse wave, which causes an impulsive noise. In order to clarify the acoustic characteristics of the noises, in the present study experiment was carried out by using the pulse waves emitted from an open end of a shock tube. Various pulse waves were obtained by controlling the compression wave formed in the tube. The results show that as the compression wave formed at tunnel exit becomes strong, the pulse wave emitted propagates with strong directional characteristics forward the axial direction of the tube, and that attenuation of the pulse wave propagating a ground surface can be reasonably predicted by a linear acoustic theory. Furthermore, the impulsive noise at far-field from the tube exit results in a sound level reduction of 6dB with a doubling of the propagating distance.

전통지역의 형태 마감재별 경관 색채 특성 -스웨덴 스톡홀름시의 실례를 대상으로-

최승희 ( Seung Heuy Choe ) 한국전통조경학회(구 한국정원학회) 2011 한국전통조경학회지 Vol.29 No.4

연구의 방법에 있어서, 주변경관에 영향을 주는 경관구성 중 건축의 색채 설계 자료로서 건축 각 부위의 벽, 지붕, 창문, 출입문 상태를 수집하였다. 또한 3배색 이미지 맵을 활용해서 색채의 경향을 분류하였다. 도시경관의 구성요소인 지역별 주요거리의 각 대상지역에 사용되어진 색채의 성질을 색상, 명도, 채도로 나타낸다. 각 대상지역 사용 색채 경향의 특성을 찾아내고 분석한다. 본 연구에서는 경관 관리 측면에서 비교적 색채의 배경이 잘 되어 있는 스웨덴 스톡홀름시의 실례를 대상으로 경관 색채 특성을 파악하였으며, 특히 경관 색채의 배경을 만들어 가는 마감재의 색채 사용에 대한 실태를 조사하였다. 관찰조사를 한 대상 지역은 각각의 8개 지역과 주 거리 이름의 색채 사용에 대한 자료를 수집하여 색채를 성분별로 분류하였다. 마감재에 있어서 지붕의 강판 종류와 적벽돌 종류, 아스팔트 슁글 종류, 도료 종류, 타일 기와 종류 등의 색채 사용의 경향을 조사하여 분석하였다. This article attempts to propose the control planning of townscape color around the historic and cultural heritages. The streets and roads of historic conservation and the changing perspectives to which it gives rise in Stockholm has changed dramatically during this century. New development or changes to existing buildings should be carried out in a way which acknowledges its surroundings and is a good neighbour, both in the cultural and social sense that makes good color design sense. There are many examples of townscape color, but the conservative and the historical streets and roads in the whole of the Stockholm city should benefit from careful design of the environment. To achieve this purposes, some strategies of case study of several streets and roads are reviewed; designing color context to relate to urban architectural design proposals of specific sites of cultural heritages are explored. In all new developments the scale of new buildings and the material finishes and colors used should respect the character of their surroundings and have due regard to the setting of any listed building. Streetscape color of visual assessment proposals should aim to help assimilate the development into the local scene. Important streets and roads should also include color townscape.

Passive Prandtl-Meyer Expansion Flow with Homogeneous Condensation

Seung-Cheol Baek,Soon-Bum Kwon,Heuy-Dong Kim 대한기계학회 2004 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.18 No.3

Prandtl-Meyer expansion flow with homogeneous condensation is investigated experiment­ally and by numerical computations. The steady and unsteady periodic behaviors of the diabatic shock wave due to the latent heat released by condensation are considered with a view of technical application to the condensing flow through steam turbine blade passages. A passive control method using a porous wall and cavity underneath is applied to control the diabatic shock wave. Two-dimensional, compressible Navier-Stokes with the nucleation rate equation are numerically solved using a third-order TVD (Total Variation Diminishing) finite difference scheme. The computational results reproduce the measured static pressure distributions in passive and no passive Prandtl-Meyer expansion flows with condensation. From both the experimental and computational results, it is found that the magnitude of steady diabatic shock wave can be considerably reduced by the present passive control method. For no passive control, it is found that the diabatic shock wave due to the heat released by condensation oscillates periodically with a frequency of 2.40 kHz. This unsteady periodic motion of the diabatic shock wave can be completely suppressed using the present passive control method.<br/>

Time-Dependent Characteristics of the Nonequilibrium Condensation in Subsonic Flows

Seung-Cheol Baek,Soon-Bum Kwon,Toshiaki Setoguchi,Heuy-Dong,Kim 대한기계학회 2002 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.16 No.11

High-speed moist air or steam flow has long been of important subject in engineering and industrial applications. Of many complicated gas dynamics problems involved in moist air flows, the most challenging task is to understand the nonequilibrium condensation phenomenon when the moist air rapidly expands through a flow device. Many theoretical and experimental studies using supersonic wind tunnels have devoted to the understanding of the nonequilibrium condensation flow physics so far. However, the nonequilibrium condensation can be also generated in the subsonic flows induced by the unsteady expansion waves in shock tube. The major flow physics of the nonequilibrium condensation in this application may be different from those obtained in the supersonic wind tunnels. In the current study, the nonequilibrium condensation phenomenon caused by the unsteady expansion waves in a shock tube is analyzed by using the two-dimensional, unsteady, Navier-Stokes equations, which are fully coupled with a droplet growth equation. The third-order TVD MUSCL scheme is applied to solve the governing equation systems. The computational results are compared with the previous experimental data. The time-dependent behavior of nonequilibrium condensation of moist air in shock tube is investigated in details. The results show that the major characteristics of the nonequilibrium condensation phenomenon in shock tube are very different from those in the supersonic wind tunnels.<br/>

Study of Moist Air Flow Through the Ludwieg Tube

Seung-Cheol Baek,Soon-Bun Kwon,Heuy-Dong Kim,Toshiaki Setoguchi,Sigeru Matsuo,Raghu S.Raghunathan 대한기계학회 2003 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.17 No.12

The time-dependent behavior of unsteady condensation of moist air through the Ludwieg tube is investigated by using a computational fluid dynamics (CFD) work. The two­dimensional, compressible, N avier-Stokes equations, fully coupled with the condensate droplet growth equations, are numerically solved by a third-order MUSCL type TVD finite-difference scheme, with a second-order fractional time step. Baldwin- Lomax turbulence model is employed to close the governing equations. The predicted results are compared with the previous experiments using the Ludwieg tube with a diaphragm downstream. The present computations represent the experimental flows well. The time-dependent unsteady condensation charac­teristics are discussed based upon the present predicted results. The results obtained clearly show that for an initial relative humidity below 30% there is no periodic oscillation of the condensation shock wave, but for an initial relative humidity over 40% the periodic excursions of the condensation shock occurs in the Ludwieg tube, and the frequency increases with the initial relative humidity. It is also found that total pressure loss due to unsteady condensation in the Ludwieg tube should not be ignored even for a very low initial relative humidity and it results from the periodic excursions of the condensation shock wave.

부족팽창 습공기 제트의 마하디스크 거동에 관한 수치적 연구

백승철(Seung-Cheol Baek),권순범(Soon-Bum Kwon),김희동(Heuy-Dong Kim) 대한기계학회 2003 대한기계학회 춘추학술대회 Vol.2003 No.11

A computational study is performed to clarify the characteristics of supersonic moist air jet issuing from a simple sonic nozzle. The effects of the initial supersaturation on the Mach disk diameter and location. the barrel shock wave and jet bondary structures are investigated in details. The axisymmetric, compressible, Navier-Stokes equations, coupled with growth equation, are solved using a third-roder MUSCL type TVD finite-difference scheme. It os found that the Mach disk diameter increases with an increase in relative humidity of moist air. while its location is not significantly dependent on the relative humidity. As the relatibe hamidity increases, the barrel shock wave and jet boundary are more expandsd 엳 to the local static pressure rise of nonequilibrium condensation.

The Wonders of Light and Color : Examining Color Images of Inland and Outland Landscapes

Choe,Seung-Heuy 대한건축학회지회연합회 2011 대한건축학회연합논문집 Vol.13 No.1

본 연구에서는 역사적 문화 유산과 수변 지역 뿐만 아니라 새로운 마을 주변의 경관색채도 관리 계획을 제안 한다. 경관색채는 보존이 잘되어 있는 역사적인 거리뿐만 아니라 특색있는 스톡홀름 시내의 마을을 선정하였다. 역사적 보존적 가치가 있는 주거용 주택과 지속 가능한 환경의 지역도 경관색채를 조사분석 하였다. 색채의 변화는 평지와 Saltsjon 해안가 뿐만 아니라 새로운 도시 지역개발에 미치는 영향도 분석하였다. 또한 컬러 이미지도 건물의 기존 컬러와 신축 건물의 칼라에 대한 시각적인 평가도 제안하고 있다. 색채의 측정은 컬러 미터, 컬러 팔레트와 같은 툴을 이용해서 분석하였다. 주로 직접측정한 외관과 멀리서 바라본 비접촉식 외관을 측정하였다. 시각적 평가는 주로 도시이미지를 결정하는 수변공간과 보전공간을 중점으로 하였다. 이러한 비교를 통해 컬러 이미지 축은 명도 및 채도값의 변화를 축으로 하여 결정하였다. 따라서 본 연구의 주목적은 접촉식 색채변화와 비접촉식 색채변화를 컬러 이미지 맵에 전이의 축을 제안하는 것이다.

Passive Prandtl-Meyer Expansion Flow with Homogeneous Condensation

Baek, Seung-Cheol,Kwon, Soon-Bum,Kim, Heuy-Dong The Korean Society of Mechanical Engineers 2004 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.18 No.3

Prandtl-Meyer expansion flow with homogeneous condensation is investigated experimentally and by numerical computations. The steady and unsteady periodic behaviors of the diabatic shock wave due to the latent heat released by condensation are considered with a view of technical application to the condensing flow through steam turbine blade passages. A passive control method using a porous wall and cavity underneath is applied to control the diabatic shock wave. Two-dimensional, compressible Navier-Stokes with the nucleation rate equation are numerically solved using a third-order TVD (Total Variation Diminishing) finite difference scheme. The computational results reproduce the measured static pressure distributions in passive and no passive Prandtl-Meyer expansion flows with condensation. From both the experimental and computational results, it is found that the magnitude of steady diabatic shock wave can be considerably reduced by the present passive control method. For no passive control, it is found that the diabatic shock wave due to the heat released by condensation oscillates periodically with a frequency of 2.40㎑. This unsteady periodic motion of the diabatic shock wave can be completely suppressed using the present passive control method.

습공기 유동에서 발생하는 충격파와 경계층 간섭의 피동제어에 관한 연구

백승철(Seung-Cheol Baek),권순범(Soon-Bum Kwon),김희동(Heuy-Dong Kim) 한국항공우주학회 2002 韓國航空宇宙學會誌 Vol.30 No.8