The Analysis To The Engineering Heat Raditor Performance Of The Mobile Passenger Boarding Bridge

The Mobile Passenger Boarding Bridge is the way of vehicles boarding the passengers toplanes. It is not only used for the passengers'transportation and boarding between airportlounges and passenger planes, but also used to be the airport shuttle bus which compartment cango up and down and board the plain directly. The system can resolve the aircraft delay problembecause of insufficient fixed air bridges, and provide brand-new solution for the civil aviationhub airport increased capacity and the small airport renovation. When the engine, operationdevice hydraulic system and the air-conditioning system of The Mobile Passenger BoardingBridge are working, they can make a very great quantity of heat, high-effect heat dissipationbecomes a outstanding problem, so its cooling system is used an advanced parallel-compositeplate type finned radiator to meet the heat radiation requirement.In this paper, FLUENT software is used to analyze the engineering heat radiationperformance of the dual aluminum composite plate type finned radiator which the MobilePassenger Boarding Bridge uses in. Firstly, the solid model of fins is established using FLUNETpreprocessor GAMBIT and the grids are divided. Then, three-dimensional numerical simulationsare performed respectively on the flow field, the pressure, and the temperature field in the nonfully-developed area and the full-development area. According to the computed results, the mainmechanism of intensified heat transfer in the plate type finned radiator of the cross bedding fins isthat the mobile boundary layer develops and destructs periodically. The channel flowing is thethree-dimensional flow, but the velocity component vertical to the partition board is smaller thanthe horizontal velocity component. The surface mobile boundary layer is not obviously damaged, the heat transfer of the partition board has not the obvious step change characteristics too, and theheat transfer is mainly focus on the fins. It is no doubt about that the "vortex" enhanced heattransfer. But compared to other areas of fins, the "vortex" is not a strong incentive to the heattransfer enhancement. Owing to the too low flow rate mostly in the plate type finned radiator, the"vortexes" forming in the recirculation zone are stuffily in the corner and make heat exchangersdecreased significantly. In the basis of the above analysis, the influence of the fin shape and thefin layout to the heat transfer is also discussed using FLUENT software, and the computed resulthas indicated that the wave fin channel can promote the fluid full development, strengthen theradiation performance of the plate type finned radiator, and improve heat efficiency of theradiators. A reasonable finned plate layout in oil layer can contribute to the development of flowfield and achieve more satisfactory radiation effect.In this paper, FLUENT software is applied to study the flow field distribution and the heattransfer performance in the channel of the composite plate type finned radiator, compare andevaluate the computed results. It is concluded that the choice of the composite plate type finnedradiator is basically feasible to meet the original design requirement, and recommendations andimprovement programs are given. The methodology and research findings in this paper can playa constructive role to the designed shape choice and further improve of the Mobile PassengerBoarding Bridge.