Biao WANG

Wind environment in the populated built area especially in campus is important. This s tudy tes ted 57 crossroad spots over of the whole campus in North China University of Technology (NCUT). The data of wind speed and direction were measured at fixed time and fixed place. The average, maximum values as well as the speed variation scale were calculated. Wind comfort criteria were adopted to examine the spots of s till wind zone, wake flow zone and risky zone. The overall measured data in wind scale map was analyzed to find out the changes of wind speed and direction in different seasons and in different locations of the school. Research and analysis show that The results show that the overall wind environment of the campus is good, the average wind speed is between 0.04-4.8, the average wind speed in spring (1.38m/s) is slightly larger than that in autumn (0.87m/s). However, the overall frequency of campus wind comfort location measurement is not high (52% and 30% in spring and autumn respectively). Finally, with analysis results, some sugges tions were given to improve the wind environment of NCUT campus. Additional CFD simulations are undertaken in order to help identifying the wind risky points.

Urbanisation is still one of the social themes in developing countries. In China, the rapid process of urbanisation and economic growth bring to people not only more opportunities for creating new life and pursuing happiness, but also the challenge to face various and complex social, economical and environmental problems. Among them some are outstanding, like the shrinking plowland devoured by urbanisation, the withering of village abandoned by urbanisation, the inflating price of house and rent pushed by urbanisation, and the severe-completing and fighting for public resources evoked by urbanisation. While local dwellers are moving out and the out-comers flooding in, the traditional public context is heavily destroyed, and various environment issues are also emerging. Basing on a survey of Ro. Xihuangcun in Beijing, China, this article has made a near analysis on public space, trying to cast light on a model in urbanisation, and to draw some constructive suggestion and solution to this selected area as well.