다중혈관 관상동맥 환자에서 y-문합을 이용하여 양쪽 내흉동맥만을 사용한 우회술의 조기 성적

AIJ guidelines for practical applications of CFD to pedestrian wind environment around buildings

This paper is a summary of the "Best Practice Guideline" (BPG) document (Franke et al., 2007) produced in the framework of the European COST Action 732 "Quality assurance and improvement of micro-scale meteorological models", available from the site given in the reference section. The full document provides guidelines for undertaking simulations that are used to evaluate micro-scale obstacle-accommodating meteorological models. This paper provides an overview of the topics covered in the full document without reproducing the specific recommendations.

The COST 732 Best Practice Guideline for CFD simulation of flows in the urban environment: a summary

Computational Fluid Dynamics for urban physics: Importance, scales, possibilities, limitations and ten tips and tricks towards accurate and reliable simulations

50 years of Computational Wind Engineering: Past, present and future

Flow-field around a high-rise building surrounded by low-rise urban blocks in a turbulent boundary layer was calculated, and the results were compared with those of the wind tunnel experiments conducted by the present authors. In the strong wind region, the calculated wind speeds with standard k-emodel were somewhat lower than the experimental results, while this was improved by using revised k-emodels. Influence of various calculation conditions on CFD results was also investigated. This paper focuses on the influence of reproduction range of the surrounding urban blocks on the flow-field around the high-rise building and the profile of the turbulent boundary layer.

CFD Prediction of Wind Environment around a High-rise Building Located in an Urban Area

Recent development of techniques on computational fluid dynamics (CFD) has enabled us to simulate the complicated flow such as the wind around buildings. Large Eddy Simulation (LES) is expected to be adopted as an effective tool to evaluate wind load on buildings for wind-resistant design of structural frames, cladding and components. In this research, the accuracy of LES to predict the fluctuating pressures on a high-rise building influenced by windward building is examined by comparison with experimental results. Especially, focusing on the case that local peak pressure occurs, the availability of LES for practical application is discussed in view of wind-resistant design.

LES of Fluctuating Pressures on a High-Rise Building Influenced by Windward Building

A criterion for pedestrian wind environment based on probability of exceedance of daily maximum gust wind speed is commonly used in Japan. We usually use gust factors to estimate the daily maximum gust wind speeds, using daily maximum mean wind speeds. But there still remains an unsettled problem of how to determine the appropriate gust factors. “A Working Group for Urban Wind Environment Assessment” in the Japan Association for Wind Engineering has been studying this problem to establish rational wind environment assessment method. The WG proposes a model equation of the gust factors based on field observation data at 152 sites, and confirms the applicability of it to the assessment of pedestrian wind environment

Masaru Yoshikawa

Papers

AIJ guidelines for practical applications of CFD to pedestrian wind environment around buildings

CFD Prediction of Wind Environment around a High-rise Building Located in an Urban Area

LES of Fluctuating Pressures on a High-Rise Building Influenced by Windward Building

Recommendation of Gust Factor for Assessment of Pedestrian Wind Environment Based on Probability of Exceedance of Daily Maximum Gust Wind Speed

Effects of vertical-ground-motion-induced axial force on inelastic lateral response of steel beam-columns