Under-Hood Air Flow Evaluation of Pedestrian-Friendly Front-End Style Using CFD Simulation

Jahani, Kambiz; Beigmoradi, Sajjad

doi:10.4271/2014-01-0762

Cited by 10 publications

(4 citation statements)

References 5 publications

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“…The feasibility of solving the heat problem of the power cabin through the CFD method was veri ed. Jahani Kambiz [8] analyzed the impact of the different shape of the inlet grid on the ow eld in the power cabin. A special front grille was constructed with the guide plate and the ba e plate.…”

Section: Dejun [4] Simulated the Air Ow In The Engine Compartment Of mentioning

confidence: 99%

An Intelligent Loader-Digger Heat Balance System based on Simulation and Wireless Sensor Networks

Chen

Liu

et al. 2020

Preprint

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High temperature of the radiator group is harmful to the power system and hydraulic system. In order to improve the heat dissipation performance of the loader, the flow field characteristics of the cooling chamber are analyzed by simulation and heat balance test. Firstly, the mathematical model of heat flow is established. Secondly, the flow field in the cooling chamber under different speeds is simulated based on CFX. And then the influence of fan position and internal flow field distribution on radiator performance is studied. Through the simulation of four different distances, it is concluded that the optimal distance between cooling fan and radiator is 76mm. Finally, the heat balance test system based on wireless sensor network is established, and the simulation results are verified. The test results show that the heat dissipation performance of the whole machine meets the requirements after optimization. In this paper, the proposed scheme can dynamically adjust the heat dissipation performance and make the loader excavator in an efficient and energy-saving operation state.

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Section: Dejun [4] Simulated the Air Ow In The Engine Compartment Of mentioning

confidence: 99%

An Intelligent Loader-Digger Heat Balance System based on Simulation and Wireless Sensor Networks

Chen

Liu

et al. 2020

Preprint

View full text Add to dashboard Cite

show abstract

“…11 Schuetz 12 considered that an inhomogeneity of the airflow over the surface of radiators less than 25% was acceptable. Kubokura et al, 4 Baskar and Doss, 10 and Jahani and Beigmoradi 13 presented that the airflow inhomogeneity of vehicle radiators ranged from 30% to 45% for the considered operating conditions. 10 The introduction of an air-duct as well as front sealing has been proved to also be the most effective ways of improving cooling airflow uniformity.…”

Section: Introductionmentioning

confidence: 98%

Improving aero-thermal environment in vehicle under-hood through small modification upstream the cooling module

Zhao

Guo

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part D:

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The control of vehicle cooling airflow is one of the key issues of under-hood thermal management as well as the reduction of cooling drag. Aerodynamic analysis using full vehicle CFD method was conducted to further improve the cooling efficiency of a production vehicle equipped with an air-guide. Existing under-hood airflow problem of the original vehicle was first analyzed, and then several modified schemes using various deflectors in the area between the front bumper and the condenser were proposed. The comparison of the under-hood airflow characteristics of each modified scheme and the original model was carried out. The simulation results revealed that sealing the cavity between the front bumper and the anti-collision beam could improve the airflow rate through the cooling module with a reduction in the total air intake volume from the grilles, while blocking the channel from the upper grille opening to the cavity could increase the airflow evenness through the cooling module. The aerodynamic and thermal tests in wind tunnels demonstrated that, for the best scheme with three deflectors at 40 km/h, the temperature of the coolant and the exhaust pipe were reduced by 6.6°C and 15°C, respectively, with a minor reduction in Cd,grilleopen, compared to those of the original vehicle. With less cooling airflow rate, the scheme with a single deflector blocking the upper channel of the cavity achieved similar cooling effect as the best scheme, the reductions of the coolant temperature and the exhaust temperature at 40 km/h were around 6.6°C and 13°C, respectively, with a similar value of Cd,grilleopen, compared to those of the original vehicle.

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“…The feasibility of solving the heat problem of the power cabin through the CFD method was verified. Jahani Kambiz [8] analyzed the impact of the different shape of the inlet grid on the flow field in the power cabin. A special front grille was constructed with the guide plate and the baffle plate.…”

Section: Introductionmentioning

confidence: 99%

Heat Dissipation Performance of Loader-Digger Cooling System based on Simulation and Test Data

Chen

Liu

et al. 2020

Preprint

View full text Add to dashboard Cite

High temperature of the radiator group is harmful to the power system and hydraulic system. In order to improve the heat dissipation performance of the loader, the flow field characteristics of the cooling chamber are analyzed by simulation and heat balance test. Firstly, the mathematical model of heat flow is established. Secondly, the flow field in the cooling chamber under different speeds is simulated based on CFX. And then the influence of fan position and internal flow field distribution on radiator performance is studied. Through the simulation of four different distances, it is concluded that the optimal distance between cooling fan and radiator is 76 mm. Finally, a testing system is built for the temperature acquisition of engine water radiator, torque converter oil radiator, hydraulic oil radiator and air-to-air cooler of the hood structure, and then the simulation and optimization results are verified.

show abstract

Under-Hood Air Flow Evaluation of Pedestrian-Friendly Front-End Style Using CFD Simulation

Cited by 10 publications

References 5 publications

An Intelligent Loader-Digger Heat Balance System based on Simulation and Wireless Sensor Networks

An Intelligent Loader-Digger Heat Balance System based on Simulation and Wireless Sensor Networks

Improving aero-thermal environment in vehicle under-hood through small modification upstream the cooling module

Heat Dissipation Performance of Loader-Digger Cooling System based on Simulation and Test Data

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