Numerical Simulation of a Truck Underhood Flow

Siqueira, C. R.; Jokuszies, M.; Lima, M. R.; Vatavuk, Paulo

doi:10.4271/2002-01-3453

Cited by 11 publications

(2 citation statements)

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“…Costa (2003) reduced temperature by 20% through this method [2]. There are many other studies which reported underhood analysis including the optimal positions of components relative to another, fan design and numerical modeling methods ( [3], [4], [5]). Furthermore, all these studies were conducted without any cross-winds.…”

Section: Introductionmentioning

confidence: 95%

Experimental Investigation of Underbody Thermal and Aerodynamic Flow-Field Features

Khasow

Best²,

Agelin‐Chaab

et al. 2015

SAE Int. J. Passeng. Cars - Mech. Syst.

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Underbody vehicle flows are poorly understood given the comparatively small field of research to draw upon; even more so in the case of crosswinds. With the advent of electric and hybrid electric vehicles and their increased cooling demands, there is a need for a link between the aerodynamic flow field and the thermodynamic response. Thus underbody research considering a yawing vehicle was conducted on a Chevrolet Aveo5 hatchback. The vehicle was outfitted with a heat source to provide a baseline analysis along thermocouples, pressure probes and flow visualization tufts. The climatic wind tunnel at the University Of Ontario Institute Of Technology's Automotive Centre of Excellence provided video data of the tufts and thermal imaging data of the heat source. This study has demonstrated that there is a strong link between underbody aerodynamics and the thermal field; however the underbody aerodynamics are more dominated by the geometric turbulent effects due to the rough underbody as opposed to the yawing direction of the vehicle.

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Section: Introductionmentioning

confidence: 95%

Experimental Investigation of Underbody Thermal and Aerodynamic Flow-Field Features

Khasow

Best²,

Agelin‐Chaab

et al. 2015

SAE Int. J. Passeng. Cars - Mech. Syst.

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“…Srinivasan et al [1] presented an omni-tree meshing technology for rapid mesh generation for Navier-Stokes solvers. The cooling airflow simulations using Navier-Stokes solvers coupled with heat exchanger calculations for passenger cars were presented by [1], [2], [3], and for trucks by [4], [5], [6].…”

Section: Introductionmentioning

confidence: 99%

Integrated Thermal Management Simulation: Evaluating the Effect of Underhood Recirculation Flows on AC-System Performance

Wang¹,

Tuszynski

Tummescheit

et al. 2009

Linköping Electronic Conference Proceedings

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Presented is a model for the simulation of the interaction between the airflow and the AC-system. Demonstrated is 1) a successful coupling of flow solver (PowerFLOW 4.1) with the Modelica-based Dymola system tool and the AirConditioning Library, making use of the previously validated underhood-environment, and 2) the importance of a careful design of the underhood flow for the AC-system performance. The validity of the developed simulation capability is tested by successful comparison with the available experimental data for the condenser at the given operating conditions. Shown is the potential for the analysis of the flow details and structures affecting the condenser performance like airflow recirculation.

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Optimization of size of vehicle and flow domain for underhood airflow simulation

Huang

Tzeng

2004

Proceedings of the Institution of Mechanical Engineers, Part D:

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The sensitivity of the size of a model vehicle and the flow domain to the flowrate of air through the radiator has been systematically investigated. The sizes of the upstream flow domain in the x, y and z directions are determined by the front flow domain size, the top flow domain size and the side flow domain size respectively. As the size of the front, top or side domain falls below some critical value, the underhood air flowrate dramatically increases. The increase depends on the size of the front flow domain. Therefore, the front, top or side flow domain size significantly affects the underhood air flowrate only when the front, top or side domain is less than a specific length. Graphical results can be easily used to determine the size of the vehicle model and the flow domain that is required to underhood air flow simulation. Finally, the simulated vehicle flow domain sizes are compared with experimentally determined values. The comparison shows that the computed air flowrate through the radiator for the recommended vehicle and flow domain size agrees closely with the test data.

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Numerical Simulation of a Truck Underhood Flow

Cited by 11 publications

References 0 publications

Experimental Investigation of Underbody Thermal and Aerodynamic Flow-Field Features

Experimental Investigation of Underbody Thermal and Aerodynamic Flow-Field Features

Integrated Thermal Management Simulation: Evaluating the Effect of Underhood Recirculation Flows on AC-System Performance

Optimization of size of vehicle and flow domain for underhood airflow simulation

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