• Proceedings of the Korea Air Pollution Research Association Conference
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• 2010.04a
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• pp.512-513
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• 2010

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2010.04a
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• pp.245-247
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• 2010

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2009.10a
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• pp.566-567
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• 2009

• Proceedings of the Korea Air Pollution Research Association Conference
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• 1999.10a
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• pp.59-60
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• 1999

20세기 후반 소비문화의 확산과 더불어 자동차 문화가 보편화되면서 전세계적으로 고농도 오존이 문제되고 있다. 1940년대 LA 지역에서 광화학 오염현상이 처음 발견된 이래 1970, 80년대 본격적으로 연구 투자가 이루어지는 동안 LA 지역의 이상적 기후와 오존 농도 변화는 광화학 오염의 전형이었다. 그러나 1990년대 들어, 지역규모의 오염물질 이동에 따른 광역 오염 (미국 동부), 종관풍이 약할 때 오염물질이 정체되며 발생하는 국지 오염 (유럽), 산성비 연구 과정에서 밝혀지기 시작한 강우와 구름의 영향들이 알려지며 오존 오염은 당초에 생각하였던 것보다 훨씬 복합적인 문제임을 인식하게 되었다.(중략)

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2000.04a
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• pp.158-159
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• 2000

내기중의 입자 (aerosol)는 크게 직경이 0.01-0.1 $\mu\textrm{m}$ 대의 Aitken mode와 0.1-1 $\mu\textrm{m}$ 부근의 accumulation mode, 그리고 1 $\mu\textrm{m}$ 이상의 coarse mode로 분류할 수 있으며 대기 중에서 부유하여 서로응집(coagulation) 과 응축(condensation)풍의 과정을 겪으며 변화한다. 일반적으로 Aitken mode 의 입자들은 nucleation 둥에 의해 발생된 입자이며, accumulation mode는 Aitken mode입자간의 응집, 인위적인 배출 둥에 의하여 생성된 입자이다. Coarse mode는 주로 자연적으로 생성된 입자이며 주로 침적에 의해 제거된다. (중략)

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2000.11a
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• pp.359-360
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• 2000

서울시 지하철은 일 평균 400만명 이상의 높은 수송율로 교통난 해결에 일조하고 있으나 지하역사내 공기질 오염도에 대한 사회적 관심이 증가하고 있는 실정이다. 지하역사내 오염물질 발생은 주로 흡기시설 및 열차풍에 의한 외부공기의 유입과 승객들에 의한 외부먼지의 유입을 들 수 있으며, 역사내부의 구조물에서 자체 생성되는 물질을 포함할 수 있다(김윤신 등, 1996). (중략)

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2001.11a
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• pp.393-393
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• 2001

대기확산모델의 운용을 위한 기상자료는 지면기상과 상층기상으로 구분된다. 지면기상 중 풍향, 풍속은 배출된 대기오염물질의 이송을 결정하는 요소이므로 배출원 위치의 연기상승고도에서 정확한 측정값이 입력되어야 한다. 그런데 풍향, 풍속은 일반적으로 지상풍 측정고도인 10m 높이에서 측정되므로 배출시설의 연기상승고도가 이보다 높은 경우에는 풍속지수식을 이용하여 풍속을 산출하게 된다. (중략)

• Journal of Bio-Environment Control
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• v.27 no.1
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• pp.64-70
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• 2018

In this study, eleven major coastal areas were selected and the climate environment and the greenhouse direction were analyzed. This research investigates the greenhouse heat loss according to the wind environment at target areas. The target areas were selected based on heated greenhouse cultivation area and wind environment standard. Temperature, wind speed, and wind direction among weather data for 30 years were collected and analyzed. The data were divided into the minimum, average, and maximum temperatures and the Meteorological Agency criteria applied to the weather and wind direction criteria. Data were collected in the range of $0{\sim}180^{\circ}$ considering the symmetry of the shape of the greenhouse. In addition, the wind direction is different for each region and the applied wind direction can be different when referring to the longitudinal direction of the greenhouse and the data are collected in the range of $0{\sim}90^{\circ}$. The results of this study are expected to be used to calculate the heating load of greenhouse installed in places wind speed high.

• Journal of the Korean Society of Marine Environment & Safety
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• v.23 no.4
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• pp.347-353
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• 2017

In this study, numerical experiments were conducted to identify distribution of rising flow and flux in the East Sea of Korea, where the coastal upwelling occurs. Temperature and salinity data from CTD observations and NIFS during summer 2013 were applied to the model. Numerical experiments were carried out with different wind speed (3, 6 m/s and 9 m/s) and direction (southerly and southwesterly), which represent the most frequent in summer conditions. As a result of calculation, upwelling flow rate was found to be highest in Pohang between five coasts(Hupo, Youngduk, Pohang, Ulsan and Busan). Comparing with southerly wind conditions, the rising flow rate is about 1.5 times greater when southwesterly wind was applied. Horizontal diffusion of the upwelling area is expected to have a speed of 17~22 km/day when a 9 m/s southwesterly wind is applied. If this wind continues over one week, a cold pool will be generated by upwelling that may reach to the Ulleung area.

• Journal of Navigation and Port Research
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• v.32 no.1
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• pp.23-27
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• 2008

This study was carried out to the effect of wind load on the structural stability of an articulated type container crane according to the wind direction assuming that 75m/s wind velocity is applied on a container crane using FSI(fluid-structural interaction). To consider fluid phenomenon around the container crane, the wind load was derived by the computation fluid dynamic, and it applied to the FSI which can guarantee an accuracy and a reliability in the design stage for wind resistant structural stability to minimize the damage due to high wind load applied in a container crane with a 'ㄱ' type articulated boom which used in the total height restriction region. Following from this, the reaction force on the each support of a container crane was suggested. ANSYS ICEM CFD 10.0 and ANSYS CFX 10.0 used for computation fluid dynamic, and the ANSYS Workbench 11.0 was used for the fluid-structural interaction.