Heat Transfer and Flow of a Gel Fuel in Corrugated Channels

For propulsion systems using gel fuels, reducing the fuel viscosity is essential for achieving better atomization and combustion. In this paper, we investigate flow heat transfer in a water-gel with temperature shear dependent viscosity. We consider several different channels, mimicking transport of gelled fuels systems, also look at corrugation, which way enhancing fluid mixing thus improving characteristics. The rheological parameters constitutive model are fitted experimental data. influence corrugation profiles, configuration Reynolds number on mean apparent pressure drop investigated. It was found that recirculation formed valley corrugations enhances main flow. noticed an increase due to stronger viscous dissipation. Furthermore, it observed sinusoidal can achieve lower compared triangular trapezoidal corrugations. A shorter wavelength deeper wave amplitude seemed be viscosity, while must adverse consequence increased drop. larger helpful both lowering addition, smooth straight pipe, Y-shape corrugated channel constant inlet velocity reduced by 70.8%, value 72.6% further applying pulsed velocity, greatly enhance improve combustion efficiency.