| 1. | Research on fuzzy control for highway tunnel longitudinal ventilation system
公路隧道纵向式通风系统的模糊控制研究 |
| 2. | Combustion process under longitudinal ventilation in tunnel using wood crib fire
利用木垛火研究隧道纵向通风条件下的燃烧过程 |
| 3. | Study of fire smoke flow characteristics of horizontal tunnel using longitudinal ventilation
纵向通风水平隧道火灾烟气流动特性研究 |
| 4. | The design codes for the road tunnel longitudinal ventilation control system form a standardized and practical design flow and platform
本文建立的公路隧道纵向通风控制系统设计准则，可操作性强，为公路隧道纵向通风模糊控制系统的设计提供了规范化、实用化的流程和平台。 |
| 5. | According to the ventilation theory of highway tunnel , the paper deduces the calculating equations of longitudinal ventilation , semi - transverse ventilation and transverse ventilation
本文首先依据公路隧道通风理论，系统地推导了纵向通风、半横向通风和全横向通风三种通风方式的计算公式。 |
| 6. | The neural - fuzzy control system for the road tunnel longitudinal ventilation has great feasibility and practical value , and it has important implications for the current road tunnel ventilation control design
公路隧道纵向通风神经模糊控制系统具有很强的可行性和实际应用价值，对目前公路隧道通风控制的设计具有重要的实用意义。 |
| 7. | The most recent technique to study the longitudinal ventilation system for tunnel is by using computational fluid dynamics ( cfx5 . 5 ) , it is very difficult to study the ventilation system because of the ratio of manet ' s length and width
对公路隧道这种长宽比例严重失调的系统，进行多维分析是极其困难的，本文通过对隧道通风系统基本组成部分的分析来达到对整个系统分析的目的。 |
| 8. | The paper involves the research of the application of neural - fuzzy control method to the road tunnel longitudinal ventilation system : by learning the sample data , the neural network automatically produces the membership functions and the control rules , subsequently , the fuzzy control model is easily established ; the distribution of pollutant and the fan operation is simulated under the varies traffic flow circumstances , the simulation results show that the longitudinal jet ventilation in medium - length and long road tunnels can be effectively controlled with the application of above method
本文提出了建立公路隧道纵向通风神经模糊控制系统的一般方法，利用神经网络学习样本数据，自动提取建立模糊控制模型的隶属函数和控制规则，通过模拟仿真各种交通状况下的污染物分布和风机运行情况，结果表明此方法对中长隧道全射流纵向通风具有良好的控制效果。 |
| 9. | Numerical simulation by cfd was carried out to understand the hot current behavior in a tunnel with longitudinal ventilation . it becomes clear that fire source modeling is very important because the hot current behavior is strongly affected by the fire source position and is sensitive to methods in the modeling of the fire source . the flame area which has developed from the fire source is an area of chemical reaction caused by combustion . even if grids in the vicinity of the fire source are made fine , it was difficult to simulate the heat generation area with consideration to this chemical reaction through using a method for setting the heat release rate simply on the fire source surface . therefore , we proposed a method adopting the knowledge on flame shape under the longitudinal ventilation and incorporating it into numerical simulation and it showed a good agreement with the experimental results . it was shown through experiments in a tunnel with longitudinal ventilation that the hot current developed toward the tunnel center downwind from the fire source near a wall . the cause was investigated by numerical simulation and it became clear from the results that the spiral air by the fire plume created a vortex in the crevice between the wall and the plume
运用cfd进行数字模拟,以了解纵向通风隧道内热烟气流的特性.通过模拟发现对火源进行模拟非常重要,热烟气流特性受火源位置的影响很大,并且对火源模拟方法很敏感.火源生成的火焰区是燃烧引起的化学反应区域.即使火源附近的木垛排列完好,也很难在考虑这些化学反应条件下模拟热生成区域.建议考虑纵向通风隧道内火焰形状并对它进行数字模拟.模拟结果与试验结果非常吻合.试验证明,在纵向通风隧道内,热烟气流从靠近墙体火源处顺风向隧道中心蔓延.数字模拟结果发现,火灾羽流造成的螺旋上升空气会在墙体和羽流之间形成一个涡流区 |
