红外热风协同加热实验台结构设计与仿真验证

为了分析多种加热因素耦合作用对路面加热效果的影响规律,进行沥青路面红外辐射与热风协同加热实验研究,在分析沥青路面协同加热机理与考虑协同实验的具体要求基础上,设计了实验台的具体结构形式,并建立了沥青路面与实验台的协同加热仿真模型,借助CFD仿真软件进行仿真分析,实现协同加热实验台结构优化与加热性能仿真验证分析。结果表明:所设计的协同实验台能够满足红外辐射与热风协同加热实验所需的加热距离和风速要求范围,实现热风均匀分布；协同加热板在加热距离调整时能够均匀加热路面；热风发生箱能够持续为加热实验提供温度稳定、风速可控的热风,验证了实验台的加热性能等能够满足热再生协同加热多因素耦合实验研究的要求,可为协同加热实验台的设计制造与未来沥青路面热再生协同加热装置的研发提供依据。

Structural design and simulation verification of experimental platform for infrared and hot air collaborative heating

The experimental study of infrared radiation and hot air collaborative heating of asphalt pavement was conducted, and the influence of coupling of different heating factors on the effect of road heating was analyzed. On the basis of analyzing the mechanism of collaborative heating on asphalt pavement and considering the specific requirements of the experiment, an experimental platform was designed and a simulation model of collaborative heating of asphalt pavement and experimental platform was established. With the aid of CFD simulation software for simulation analysis, the structural design and heating performance simulation analysis of the collaborative heating experimental platform were carried out. Results showed that the designed experimental platform could evenly distribute the hot air within the heating distance and wind speed range required for the collaborative heating experiment. The collaborative heating plate could evenly heat the road surface when the heating distance was adjusted. The hot air generator could continuously provide hot air with stable and controllable temperature and wind speed for the heating experiment. The results verified that the heating performance of the experimental platform meets the requirements of the collaborative heating experiment under multi-factor coupling, which provides a theoretical basis for the design and manufacture of collaborative heating experimental platform and the development of the collaborative heating device for thermal regeneration of asphalt pavement in the future.