Computer Simulation of Passenger Compartment Airflow

Hara, Junichiro; Fujitani, Katsuro; Kuwahara, Kunio

doi:10.4271/881749

Cited by 16 publications

(2 citation statements)

References 4 publications

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“…Heat transfer by convection in vortices was recorded through 2D numerical research, and the instantaneous flow structure of the heat transfer inside an automobile compartment was demonstrated using a 3D analysis. 6 The relationship between the thermal comfort of passengers and the relative design parameters such as the conditioned air flow rate, the air-conditioning outlet location, the exhaust vent location and the glass properties was evaluated. 7 To provide detailed flow characteristics for the thermal comfort of passengers, an experimental study was carried out using the particle image velocimetry (PIV) technique on 1:5 scale Perspex vehicle compartment models.…”

Section: Introductionmentioning

confidence: 99%

Study of thermal phenomena in the cabin of a passenger vehicle using finite element analysis: human comfort and system performance

Kim

Yang

et al. 2014

Proceedings of the Institution of Mechanical Engineers, Part D:

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A numerical simulation is performed to evaluate the thermal comfort of passengers and the performance of a defroster. In this study, a grid system based on a real vehicle and a finite element human model are used with an appropriate time step. The turbulent nature of the flow is modelled using a standard k–ε model according to the logarithmic law of the wall. The complex flow characteristics inside the passenger compartment are shown with simultaneous velocity and temperature fields in several sections of the flow domain. Through a predicted mean vote analysis, the thermal comfort of the passengers is discussed, in particular with respect to the measured location of the seat and the measured position of the passenger. An additional study is conducted on the defrost mode with respect to the defrosting performance which is closely related to passenger safety. The velocity profile at the defrost nozzle is interpolated to the inlet boundary surface node through a defrost duct simulation. The monitored points on the ice boundary indicate the melting time, the phase-change duration, the change in the enthalpy and other useful information.

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Section: Introductionmentioning

confidence: 99%

Study of thermal phenomena in the cabin of a passenger vehicle using finite element analysis: human comfort and system performance

Kim

Yang

et al. 2014

Proceedings of the Institution of Mechanical Engineers, Part D:

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“…e-mail: jangjim@mail.ncku.edu.tw cool-down transient analysis which took into account the passenger compartment, including glazed surfaces and pertinent physical and thermal properties of the enclosure. Hara et al (1989) solved the complete 2-D and 3-D incompressible Navier-Stokes equations to simulate the flow fields in automobile passenger compartments. They found that the streamlines swirl upward at the front seat, but do not reach the back seat readily.…”

Section: Introductionmentioning

confidence: 99%

3-D numerical and experimental analysis for airflow within a passenger compartment

Chien¹,

Jang²,

Chen³

et al. 2008

Int.J Automot. Technol.

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People use cars so frequently that they always consider the air-conditioning, and thermal comfort of the driver and passenger when buying a new car. Therefore accurate simulation of the thermal performance of automobile air conditioners to improve human comfort has become increasingly important. In order to improve the thermal comfort of passengers, 3-D flow motion and thermal behavior within vehicles must be analyzed. In this paper, a numerical simulation was used to investigate thermal behavior in a vehicle. Because air temperature at an air vent is related to the cooling capacity of the air conditioner, the cooling capacity was calculated using ε-NTU (effective number of transfer unit) theoretical equations. Using the air temperature relationship between inlet and outlet vents as boundary conditions, a 3-D unsteady κ-ε turbulent model was used to give a transient analysis simulation of the temperature field and flow conditions in a vehicle's passenger cabin. Cooling cycle analysis and conjugate heat transfer analysis at the inside surface of the cabin's ceiling, floor and sides were also considered. The predicted temperature distributions in the vehicles passenger cabin were in good agreement with those obtained experimentally.

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Visualization of Thermal Flows in an Automotive Cabin with Volume Rendering Method

Ono¹,

Matsumoto²,

Himeno³

2001

Eurographics

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Computer Simulation of Passenger Compartment Airflow

Cited by 16 publications

References 4 publications

Study of thermal phenomena in the cabin of a passenger vehicle using finite element analysis: human comfort and system performance

Study of thermal phenomena in the cabin of a passenger vehicle using finite element analysis: human comfort and system performance

3-D numerical and experimental analysis for airflow within a passenger compartment

Visualization of Thermal Flows in an Automotive Cabin with Volume Rendering Method

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