| The construction of primary and secondary school campuses in Shenzhen has faced many challenges over recent years,such as the increase of degree demand,the small scale of land use,the improvement of green requirements and so on.Under this background,high plot ratio primary and secondary school campuses came into being.As the main place for students to study and extracurricular activities,the comfort of the wind environment directly affects students’ physical and mental health.Especially in the high plot ratio primary and secondary school campuses,its high building density and plot ratio are more likely to cause poor air circulation and have an adverse impact on students.Therefore,how to give full play to the effectiveness of building natural ventilation and solve the problem of campus wind environment in primary and secondary schools with high plot ratio has become a new issue to be solved in the design of such schools.Taking the high plot ratio primary and secondary school campus in Shenzhen as the research object,this paper abstracts five architectural prototypes;Starting from the humid and hot climate in Shenzhen,through the control variable method,CFD simulation is used to quantify the advantages and disadvantages of various natural ventilation methods under different prototypes,so as to provide reference for the follow-up construction of high floor area ratio primary and secondary schools in Shenzhen.The article is mainly divided into four parts.Firstly,the first and second chapters introduce the research background,purpose,significance,relevant literature and research progress;The basic principle of natural ventilation is introduced.Secondly,taking the high plot ratio primary and secondary school campus in Shenzhen as the research object,this paper summarizes the characteristics of high plot ratio primary and secondary school campus in architectural function,space,form and so on;Summarize its morphological types from horizontal and vertical directions;Five basic prototypes are extracted based on the research cases.Then,taking the climate conditions in Shenzhen as the background,the CFD simulation software is used to conduct detailed quantitative simulation and comparative analysis on three of the above five basic prototypes from four aspects:transverse Bay,large slab opening,main overhead and local design,so as to explore the natural ventilation design means suitable for high plot ratio primary and secondary school campuses.Finally,the effectiveness of the design method is verified by optimizing the actual case.The results show that for the high floor area ratio primary and secondary school campuses in Shenzhen,which create "the second ground" with large boards,they should be kept overhead below the large boards or the classrooms should be arranged in accordance with the dominant wind direction;For the floor where the large slab is located,local overhead is still the highest priority outdoor wind environment optimization method,and the selection of overhead location is better than size change,so the overhead location in the upwind direction on the east side should be given priority;As another means of optimizing ventilation,the position of large slab opening is also higher than the change of size,and the optimal position is slightly different due to the influence of different shapes. |
