CFD 모델의 지표경계입력자료 생성을 위한 일조 모델 개발

Abstract

CFD 모델의 지표경계입력자료 생성을 위한 일조 모델 개발

김 도 형

부 경 대 학 교 대 학 원 환 경 대 기 과 학 과

요 약

In this study, the numerical model was developed to Computational Fluid Dynamics (CFD) model for surface boundary input data. In order to develop sunshine model value and land cover map data is required. Also, it was verified against the observational data measured at Seoul Automated Synoptic Observing System (ASOS) located in an urban area. Three-dimensional topography and building configuration as the surface input data of the model were constructed using a Geographic Information System (GIS) data. First, the accuracy of the computing planetary positions suggested by Paul Schlyter was verified against the data provided by Korea Astronomy and Space Science Institute (KASI) and the results showed that the numerical model predicted the Sun’s position (the solar azimuth and altitude angles) quite precisely. Then, this model was applied to reproduce the sunshine duration at the Seoul ASOS. The observed and calculated sunshine durations were similar to each other. However, the observed and calculated sunrise (sunset) times were delayed (curtailed), compared to those provided by KASI that considered just the ASOS’s position information such as latitude, longitude, and elevation height but did not consider the building and topography information. Using sunshine model value and land cover map data, it is created CFD model input data. Surface input data and WRF boundary data(wind vector, temperature, TKE) is used as an input value at CFD model. shadow effects and land cover data don’t consider by CaseⅠ. The CaseⅡ is consider only shadow effects. Finally, The CaseⅢ is consider shadow effects and land cover data. If input data of WRF weather fields and surface boundary data enter, will be accurate CFD model numerical simulation.