Evaluating Microclimatic Impact Assessment of High-Rise Building in Korea Kim, Jae-cheol 1) Jang, Eun-soo 1) Hur, Nahm-joo 2) Shin, Dong-hoon 3) Lee, Kyoo-seock 4) 1) Graduate Student, Dept. of Landscape Architecture, Sungkyunkwan University 2) Senior, Dept. of Landscape Architecture, Sungkyunkwan University 3) Research Associate, Dept. of Landscape Architecture, Sungkyunkwan University 4) Professor, Dept. of Landscape Architecture, Sungkyunkwan University 1. Introduction 2. Materials and Methods 3. Results and Discussion 4. Conclusions Contents Since late 1990`s -> Lots of high-rise building has been built in Korea It creates many micrometeorological impacts -> due to turbulence from nearby high-rise building It need the careful and accurate impact assessment -> for keeping the quality of life of residents -> lives in high densely developed urban areas 1. Introduction In foreign countries, -> The building wind impact assessment is done as a guideline before building construction. In Korea, no assessment in Ministry of Environment Only Seoul City Government -> to assess building wind impact So far there has been no conceivable impact by lots of skyscraper construction. It needs to be checked whether no impact irrespective of skyscraper construction -> keep - quality of life for urban residents. -> To review the current guideline -> to confirm whether it has been assessed exactly or not -> to investigate the improvement of current building wind impact assessment guideline in Korea. The purpose of this study Table 1. Microclimate assessment standard of Seoul Government EIA SectionAssessment Items Impact Assessment Guideline 1) Analysis, comparison and prediction of microclimate change impact using the maximum wind velocity (95% range) data of weather measurement, together with air temperature, humidity, wind (wind direction and wind velocity) and local weather measurement data. 2) ENVI-met model or microclimate environmental analysis numerical model 3) Wind corridor analysis centering the proposed building 4) Air quality impact assessment using micrometeorological change prediction results Assessment area 300m radius 3. Materials & Methods To review the EIA in Seoul Simulation using CFD model -> WinMiskam Ver.9 comparison & evaluation EIA ProjectResolution Input wind speed(m/s) Estimation result Analysis model Shincheon-doing* 8m8m0.95 too coarse Model selection problem -> ( ENVI-met) max. # of cells -> 25 Because this CFD model is designed for low-rise building in Germany, not for skyscrapers in Korea Discussion 4. Conclusions 1) The Wind speed at Shincheon area and Euljiro area -> Neglectable change -> abrupt increase 2) Seoul Government building wind EIA -> Resolution should be finer Wind speed data should be higher Model should handle large volumes of data