On the Possibility of CFD Modeling of the Indoor Environment in a Vehicle

Dancă, Paul; Bode, Florin; Năstase, Ilinca; Meslem, Amina

doi:10.1016/j.egypro.2017.03.1133

Cited by 29 publications

(18 citation statements)

References 4 publications

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“…In this paper the effect of the driver presence and different angles of airflow from an air vent, over the thermal sensation was investigated. In previous papers [16,17], we presented the setup of the model of a cabin car and we showed that we can reproduce the in-cabin environment without passengers, finding values of indoor thermal variables from the CFD model that were similar to those of experimental measurements. We present in this article, results obtained for the air vent located on the dashboard at the driver's position (left side air vent).…”

Section: Introductionmentioning

confidence: 73%

CFD simulation of a cabin thermal environment with and without human body – thermal comfort evaluation

et al. 2018

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Nowadays, thermal comfort became one of the criteria in choosing a vehicle. In last decades time spent by people in vehicles had risen substantially. During each trip, thermal comfort must to be ensured for a good psychological and physical state of the passengers. Also, a comfortable environment leads to a higher power concentration of the driver thereby to a safe trip for vehicle occupants and for all traffic participants. The present study numerically investigated the effect of human body sited in the driver's place, over the air velocity distribution and over the thermal comfort in a passenger compartment. CFD simulations were made with different angles of the left inlet grill, in both cases, with and without driver presence. In majority of the actual vehicles environment studies, are made without consideration of human body geometry, in this case, the results precision can be affected. The results show that the presence of human body, lead to global changing of the whole flow pattern inside the vehicular cabin. Also, the locations of the maximum velocities are changing with the angle of the guiding vanes. The thermal comfort PMV/PPD indexes were calculated for each case. The presence of human body leads to a more comfortable environment.

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Section: Introductionmentioning

confidence: 73%

CFD simulation of a cabin thermal environment with and without human body – thermal comfort evaluation

et al. 2018

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“…General thermal comfort index (GTCI) serves the purpose by specifying target and global values, a detailed description can be found in [32]. The global value for the predicted mean vote, PMV G , mPMV G and equivalent temperature EQT G defined by Equations (17)- (19) expresses how close we are to the thermally neutral conditions. Computing these values we could predict whether the comfort has been achieved or not.…”

Section: %mentioning

confidence: 99%

“…A review of all the factors affecting the thermal comfort inside a vehicle cabin was performed by Simion et al [18] by dividing it into measurable and personal factors. A number of CFD studies have been performed in an attempt to numerically evaluated the car thermal environment [19]. A numerical parametric study for various geometrical parameters affecting the passenger thermal environment was conducted by Currle and Maue [20].…”

Section: Introductionmentioning

confidence: 99%

Thermal Comfort in the Passenger Compartment Using a 3-D Numerical Analysis and Comparison with Fanger’s Comfort Models

Khatoon

Kim

2020

Energies

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The paper presents the human thermal comfort inside a car cabin using three-dimensional numerical analysis and state of the art comfort models. Vehicular thermal comfort is a must concern factor in modern car manufacturing industries. Numerical simulations have been performed to accurately predict the temperature inside the car cabin and velocity of airflow. The numerical results are then compared using Fanger’s model, the equivalent temperature model and the modified Fanger’s model. A link has been developed using a general thermal comfort index for the considered human thermal comfort models. The general thermal comfort index takes into consideration all the investigated parameters that affect the vehicular thermal comfort thereby evaluating the whole car environment. The thermally comfortable conditions for the driver and passengers in a vehicular cabin are also addressed based on some of the thermal comfort indexes available in literature. In addition, the solar load has also been added using a surface radiation model to consider the environmental heat load effect on cabin thermal comfort.

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“…Based on the literature review, it was found out that researchers focused their attention on motorization and HVAC systems mainly for automobile cabins, for example [2], [3], [4], [5], [6], [7]. For the railway industry, CFD simulation tend to focus on airflow simulations in carriages, for example [8], [9].…”

Section: Introductionmentioning

confidence: 99%

CFD Modelling of The Airflow in The Driver's Cabin of a Modern Rail Vehicle

Palmowska¹,

Walczyk²

2019

Proceedings of the 5th World Congress on Mechanical, Chemical, and Material Engineering

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One of the important applications of CFD technique is modelling of the air distribution systems in ventilated and airconditioned areas. In this paper, numerical modelling was used to predict airflow in the air-conditioned driver's cabin of a modern rail vehicle. The aim of this study was to investigate indoor thermal and humidity conditions with the use of ANSYS CFX code. Therefore, the numerical model of the cabin was prepared in the presence of a driver. The boundary conditions were developed on the basis of the heat and moisture balance of the object. The air parameters like temperature, humidity and velocity were verified. Particular attention was paid to maintenance of optimal internal conditions due to the presence of a driver for 6 different cases of air distribution. The simulation results were compared with direct calculation results. For each of the studied cases, there were substantial differences in the distributions of air velocity and temperature. In any case, the maximum permissible air temperature and humidity were not exceeded globally. The recommended air velocities were exceeded locally.

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On the Possibility of CFD Modeling of the Indoor Environment in a Vehicle

Cited by 29 publications

References 4 publications

CFD simulation of a cabin thermal environment with and without human body – thermal comfort evaluation

CFD simulation of a cabin thermal environment with and without human body – thermal comfort evaluation

Thermal Comfort in the Passenger Compartment Using a 3-D Numerical Analysis and Comparison with Fanger’s Comfort Models

CFD Modelling of The Airflow in The Driver's Cabin of a Modern Rail Vehicle

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