Supercritical Heat Transfer and Pyrolysis Characteristics of n-Decane in Circular and Rectangular Channels

In this research, the effects of different channel cross-section shapes on flow, heat transfer and pyrolysis characteristics n-decane were analyzed compared based CFD simulations. The interactions between cracking, flow field in a circular tube rectangular studied. results showed that mean pressure drop is 1.18 times as high with due to its smaller equivalent diameter. maximum value chemical sink 1.6 channel. temperature zone any cross section much larger than superposition boundary layer lower turbulent kinetic energy corners Nu 1.3 capacity, viscosity higher wall shear stress.