Heat Transfer Model and Numerical Simulation for Microwave Hot In-Place Recycling of Asphalt Pavements

摘要: To assess the temperature field when microwave heating is used to recycle asphalt mixtures, a two-dimensional mathematic model considering heat absorbed and conducted by internal heat-generation was developed based on Fourier transfer model. The modeled approximating radial two dimensional planar surface with uniform dielectric properties throughout. control volume finite difference method (CV-BDM) establish discrete form of energy conservation equations, numerical simulation conducted. Results showed that non-linear transfer. For confirmation, an experiment using power system at 2.45GHz recording variation as function location time within samples mixture. data confirmed this could both mixture in reasonable improve uniformity.