• 한국항공운항학회지
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• 제17권1호
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• pp.39-45
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• 2009

An Analysis of wind is essential for planning runway direction. As a general rule, the principal traffic runway at an airport should be oriented as closely as practicable in the direction of the prevailing wind. Aircraft are able to maneuver on a runway as long as the wind component at right angles to the direction of landing and taking-off, the cross wind component, is not excessive. ICAO recommends that runway be oriented so that aircraft may be landed at least 95% of the time with allowable cross wind components not exceeding specified limits based upon the airport reference field length. Based on the recommendation, the direction of the runway or runways at an airport can be determined through graphical vector analysis on wind rose. This study is to develop the wind-rose software for planning the optimum runway direction at an airport with the raw wind data based on reliable wind distribution statistics that extend over as long as a period as possible, preferably of not less than 5 years.

• KIEAE Journal
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• 제8권1호
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• pp.19-24
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• 2008

The wind-power among the new and renewable energies uses the wind, a limitless, clean and pure energy which is available at any place. It requires low installation cost compared to the generation of other renewable energies, and is easy to operate, and furthermore, can be automated for operation. Korea has been taking a great deal of interest in the development of renewable energy generating equipment, specifically wind power generation as the nation has a nearly total reliance on imported petroleum. A measuring poll 30m high was installed at a location with an altitude of 142m above the sea level in order to measure and analyze the wind power potentiality at H University's Asan Campus, and the wind velocity and wind direction were measured for 1 year. As for the wind power resource of the area adjacent to Asan campus, the Weibull Distribution coefficient was C=2.68, K =1.29 at H30m. Weibull Distribution coefficient was modified on the basis of compensated wind velocity (=3.1m/s) at H 60m, and the energy density was $42W/m^2$. AEP 223,750 KWh was forecast based on the simulation of an 800KW grade wind turbine. It is considered that the wind power generation has to be studied further in the inland zone with low wind velocity to cope with the possible exhaustion of fossil fuel and ensure a sustainable environmental preservation.

• 한국전산유체공학회:학술대회논문집
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• 한국전산유체공학회 2003년도 추계 학술대회논문집
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• pp.194-199
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• 2003

The studying is to analyze characteristic of air flow and is used to design in an automotive HVAC module. The RNG k-e turbulence model with the Upwind Difference convection scheme and an unstructured hybrid mesh with arbitrary matching method were applied to the simulation. The comparing air flow characteristic of the basic HVAC module and total HVAC module with blower were discussed in the paper.

• 한국항행학회논문지
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• 제26권6호
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• pp.393-403
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• 2022

도심지역 교통문제의 해결책으로 제시되고 있는 UAM의 초기 운영 형태는 다양한 연구에서 현재 항공기 중 VTOL 기체와 유사 할 것으로 제시되고 있다. 고정익 항공기가 이·착륙하는 활주로의 방향 결정과 유사한 형태로 VTOL 기체의 이착륙이 이루어지는 버티포트는 기체의 이·착륙 과정의 출발 및 도착의 비행 방향을 바람의 방향을 고려하여 정하도록 하고 있다. 일반적으로 공항이 건설되는 지역과 다르게 도심지의 경우 새로운 건물의 건축 등 지형 또는 장애물 변화 환경에 따라 바람의 특성이 지속적으로 변화될 수 있는 여건이 예상된다. 본 연구에서는 버티포트의 위치가 예상되는 도심 위치에서 이착륙 방향 검토를 위한 장기간의 실제 관측 데이터를 풍배도를 사용하여 비교 후 관측 기간 및 관측 위치에 따라 지상 바람의 특성과 주 바람의 방향이 변화 가능성을 확인하였다.