The Influence Of Forest Landforms On Air Flow Field Around Highway Embankment

The contents of this paper is part of the Shandong transportation science and technology project,"the influence of highway construction on the regional ecological environment and the research on the regulation technology".With the rapid development of highway in our country,the ecological environment of Highway area has been severely damaged.The essential reason for the influence of the highway on the ecological environment is that the highway construction changes the original topography and makes the change of the flow field of the regional environment in the wind field.Regardless of the natural growth or artificial cultivation,there is a forest landform in the highway area.Due to the influence of the forest landscape,the flow field of highway embankment becomes more complex.Therefore,it is very meaningful to study the influence of forest landscape on the flow field of Highway embankment.The main contents of this paper are as follows:(1)Numerical simulation of wind resistance of forest landscape.By using the additional source term method,the numerical simulation method of wind erosion performance of forest landscape is established.By comparing with the measured data,the reliability of the additional source term model is verified.(2)Numerical simulation of the flow field and temperature field of highway embankment under the condition of flat landform and forest landform.The flow field and temperature field of the embankment under two kinds of geomorphic conditions are compared,and the characteristics of the flow field are analyzed.(3)Numerical simulation of the flow field and temperature field in the embankment under different parameters.The influence of forest landscape on the flow field and temperature field of embankment was analyzed by the different degree of thinning,tree height and the distance between trees and embankment.(4)Numerical simulation of the flow field in the embankment under the condition of multiple rows of trees.Analysis of the influence of multi row forest landscape on the flow field of embankment.The research work in this paper will provide a reference for the study of the flow field and temperature field of the highway embankment in the presence of forest landform.