“…The system of equations for the heat transfer model, where the track is divided into a high temperature region and a low temperature region, is (1) where A n , B n , c n , and d n are Fourier expansion coefficients, A c is the cross-sectional area of the channel, D H is the hydraulic diameter, L is the length, m o , ρ ,o , T o, and u o are constants and represent a biased background value for mass flow rate, density, temperature, and fluid velocity respectively [3].…”