Vegetation has positive effects on improving wind environment in residential areas which is important to the residents' pedestrian comfort. In order to reflect the impact of landscape on wind environment,a wind ex...Vegetation has positive effects on improving wind environment in residential areas which is important to the residents' pedestrian comfort. In order to reflect the impact of landscape on wind environment,a wind experiment was carried out in a typical residential area in Tsinghua University. Meanwhile,numerical simulation with reasonable plant models under the experimental boundary condition was held. By comparison between the experiment data and results of the simulation,wind direction of points in narrow passage and velocity of points in the first row facing the coming wind are almost accurate in simulation,but other points share big error percentage. The reason lies in the disturbing of wind model and settings of plant model. Moreover,by classifying measurement points according to relations between plants location and directions of coming wind,quantitative effects of vegetation are shown through simulations with plants and without plants. Plants directly facing the coming wind have most obvious function on decreasing the wind velocity,thus providing feasible scheme for vegetation design.展开更多
Mobile agents provide a new method for the distributed computation. This paper presents the advantages of using mobile agents in a distributed virtual environment (DVE) system, and describes the architecture of hetero...Mobile agents provide a new method for the distributed computation. This paper presents the advantages of using mobile agents in a distributed virtual environment (DVE) system, and describes the architecture of heterogeneous computer's distributed virtual environment system (HCWES) designed to populate some mobile agents as well as stationary agents. Finally, the paper introduces how heterogeneous computer network communication is to be realized.展开更多
基金Project(50878111) supported by the National Natural Science Foundation of ChinaProject(2006BAJ02A02) supported by the National Research Plan Project during the 11th Five-Year Plan Period
文摘Vegetation has positive effects on improving wind environment in residential areas which is important to the residents' pedestrian comfort. In order to reflect the impact of landscape on wind environment,a wind experiment was carried out in a typical residential area in Tsinghua University. Meanwhile,numerical simulation with reasonable plant models under the experimental boundary condition was held. By comparison between the experiment data and results of the simulation,wind direction of points in narrow passage and velocity of points in the first row facing the coming wind are almost accurate in simulation,but other points share big error percentage. The reason lies in the disturbing of wind model and settings of plant model. Moreover,by classifying measurement points according to relations between plants location and directions of coming wind,quantitative effects of vegetation are shown through simulations with plants and without plants. Plants directly facing the coming wind have most obvious function on decreasing the wind velocity,thus providing feasible scheme for vegetation design.
文摘Mobile agents provide a new method for the distributed computation. This paper presents the advantages of using mobile agents in a distributed virtual environment (DVE) system, and describes the architecture of heterogeneous computer's distributed virtual environment system (HCWES) designed to populate some mobile agents as well as stationary agents. Finally, the paper introduces how heterogeneous computer network communication is to be realized.
