發(fā)布時間：2018-03-23 12:10

  本文選題：路面溫度場　切入點：熱平衡方程　出處：《武漢理工大學(xué)學(xué)報》2014年08期

【摘要】：為了分析瀝青面層材料熱物理參數(shù)對路面整個深度范圍內(nèi)溫度場的影響規(guī)律,根據(jù)傳熱學(xué)和氣象學(xué)的基本原理,得出路表面熱平衡方程,以實測太陽輻射值、氣溫、風(fēng)速作為模型的邊界條件,采用ANSYS CFX軟件,進行三維數(shù)值建模。通過實測數(shù)據(jù)驗證模擬值的準確性,進而分析路面材料的吸收率、導(dǎo)熱系數(shù)、比熱、發(fā)射率和密度對瀝青路面溫度場的影響。結(jié)果表明:該CFX計算模型具有較高的精度;同時,為改善高溫地區(qū)瀝青路面溫度場,路面材料應(yīng)具有吸收率小、導(dǎo)熱系數(shù)小、比熱大、發(fā)射率大的特點;研究結(jié)果可為節(jié)能環(huán)保型路面的選材與設(shè)計奠定基礎(chǔ),并為如何改善瀝青路面溫度場提供理論依據(jù)。
[Abstract]:In order to analyze the influence of the thermal physical parameters of asphalt surface material on the temperature field in the whole depth range of pavement, according to the basic principles of heat transfer and meteorology, the outlet surface heat balance equation is obtained to measure the solar radiation value and temperature. The wind speed is used as the boundary condition of the model, and the 3D numerical modeling is carried out by using ANSYS CFX software. The accuracy of the simulated value is verified by the measured data, and the absorptivity, heat conductivity and specific heat of the pavement material are analyzed. The effect of emissivity and density on the temperature field of asphalt pavement is studied. The results show that the CFX calculation model has high accuracy, and in order to improve the temperature field of asphalt pavement in high temperature area, the pavement material should have small absorptivity, small thermal conductivity and high specific heat. The research results can lay a foundation for the selection and design of energy-saving and environment-friendly pavement and provide a theoretical basis for how to improve the temperature field of asphalt pavement.
【作者單位】： 重慶交通大學(xué)土木建筑學(xué)院;林同h旯使こ套裳，

本文編號：1653396