辐射防护2025，Vol.45Issue(2)：149-156,8.
建筑物及地形对小尺度扩散影响的风洞实验研究
The study of wind tunnel experiment on the radioactive material transmission in small scale with building and terrain
张芳 1范丹 1郭占杰 1吕明华 1黄莎 1李云鹏 1张俊芳1
作者信息
- 1. 中国辐射防护研究院 中核核环境模拟与评价技术重点实验室,太原 030006
- 折叠
摘要
Abstract
A wind tunnel experimental study was performed in small scale for representative nuclear power plant site.The influence of buildings and terrain to radioactive material diffusion in the near field was studied.The model rate is 1∶600,and the similar demand of model and physical prototype is satisfied by correcting profile of wind and turbulence.6 wind directions were studied for disturbing of building and terrain to horizontal and vertical flow field under condition of the annual average wind speed and light wind speed.The experimental results show that the wind speed is deficit and turbulence intensity is improved in WNW to ESE axis wind direction.The different sample sites have different impact to wind speed and turbulence intensity.The distribution of stack emission and ground-level emission in ground axis were different in the condition of annual mean wind speed and light wind speed.The axial maximum diffusion factor is 4.05×10-5 s/m3 under stack emission condition,and the distance presented is 240 m.The axial maximum diffusion factor is 4.79×10-3 s/m3 under ground emission condition,and the distance presented is 45 m.关键词
风洞/小尺度/建筑物/小风条件Key words
wind tunnel experiment/small scale/buildings/light wind condition分类
环境科学引用本文复制引用
张芳,范丹,郭占杰,吕明华,黄莎,李云鹏,张俊芳..建筑物及地形对小尺度扩散影响的风洞实验研究[J].辐射防护,2025,45(2):149-156,8.
