| 수풍부 형상에 따른 로드 셀형 풍향풍속계의 하중 비 비교 |
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김태형, 한동섭 |
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| Comparison of Load Ratio of Load-cell type Anemometer with Windswept Shape Variation |
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Tae-Hyeong Kim, Dong-Seop Han |
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| Abstract |
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Anemometer is a meteorological instrument that measures wind direction and wind speed in real time, and is mounted to the cranes that are used at ports, shipbuilding yards, off-shore structure, or construction sites that are influenced by wind, and it is used in conjunction with the safety system. Load cell-type anemometer measures the wind direction through the ratio of load between 4 positions by mounting the thin plate to 4 load cells, and measures wind velocity through the summation of loads. According to previous research, the load ratio between two adjacent windswept with respect to the wind direction has unstable value due to vortex around
windswept. This causes the result that increases an error on the wind direction. In this study we compared and analyzed the difference between the load ratio with respect to three type windswept shapes in order to suggest the proper windswept shape to reduce this error. The computational fluid flow analysis is carried out with ANSYS CFX to analyze the load ratio between three windswept shapes. Wind direction was adopted as the design variable, and selected 9 wind direction conditions from 0o~90o with 11.25o interval for computational fluid flow analysis. |
| Key Words:
anemometer;load cell;load ratio;windswept shape;computational fluid flow analysis |
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