Study on Gas-solid Heat Transfer Process of Side-impinging Jet Aluminum Coil Annealing Furnace
The distribution rules of the internal flow field and the aluminum coil temperature field at the gas-solid coupling interface in the side-impinging jet annealing furnace were studied by numerical simulation and experimental test,and the distribution properties of the aluminum surface heat transfer coefficient were also discussed.The results show that the nozzle velocity distribution in the furnace is uniform,but the temperature both at the end and the outer surface of alloy coil is higher,and the temperature of different locations on the outer surface and end surface also varies greatly.The calculation results of the heat transfer coefficient on the surface of the alloy show that the distribution presents a trend of high at both ends of surface and low in the middle.The heat transfer coefficient of the end surface is high edge and low middle,and the weighted coefficient calculation formula of each surface heat transfer coefficient is obtained by data fitting.The simulation results are consistent with the test results with the flow velocity calculation error in about±10%,and the aluminum coil temperature deviation is less than 2℃.
aluminum coil annealing furnacegas-solid heat transfernumerical simulationtemperature field
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