풍황탑 차폐영향 분석을 위한 3차원 전산유동해석
Three-Dimensional Computational Flow Analysis on Meteorological-Tower Shading Effect
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초록
It is difficult to avoid measurement errors caused by the shading effect of the meteorological tower, which is used for wind resource assessment according to the IEC Standard. This paper presents a validation of the computational flow analysis results by comparing the results with the wind tunnel experiment conducted for Reynolds numbers in the104 to105 range, for the preparation of a database for use in an automatic method of correcting met-tower shading errors. A three-dimensional simulation employing the MP (Modified Production) k-ԑ turbulence model predicted a wind speed deficit in the wake region according to minimum wind speed ratio, within an MAE (Mean Absolute Error) of 2.4%
Abstract
It is difficult to avoid measurement errors caused by the shading effect of the meteorological tower, which is used for wind resource assessment according to the IEC Standard. This paper presents a validation of the computational flow analysis results by comparing the results with the wind tunnel experiment conducted for Reynolds numbers in the104 to105 range, for the preparation of a database for use in an automatic method of correcting met-tower shading errors. A three-dimensional simulation employing the MP (Modified Production) k-ԑ turbulence model predicted a wind speed deficit in the wake region according to minimum wind speed ratio, within an MAE (Mean Absolute Error) of 2.4%
참고문헌 (7)
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- International Electrotechnical Com- mission, "International Standard IEC 61400-12-1 Wind Turbines - Part 12-1: Power performance measurements of electricity producing wind turbines", 96~ (2005)
- Kim, H.G., "Correction of Met-Tower Shading Error by Computational Flow Analysis", Proceedings of the 13th Wind Eng. Institute of Korea Symposium (2010)
- Kim, H.G., "Wind Speed Measurement System with Tower Shading Correction by Using Computational Flow Analysis", Korea Patent Pending, 2008-10-0009392, ~ (2008)
- Orlando, S., "Experimental study of the effect of tower shadow on anemometer readings", J. Wind Eng. Ind. Aerodyn, 99, pp.1~6 (2011)
- Software Cradle Co, "SC", Tetra Version 9 User's Guide, 2011
- Kim, H.G., "Wind Tunnel Experiment and Computational Flow Analysis on a Wind Farm Constructed Beyond Dyke", The 8th KSME-JSME Thermal and Fluids Engineering Conference (2012)