Development of a CFD model for simulating vehicle cabin indoor air quality

2018 ◽  
Vol 62 ◽  
pp. 433-440 ◽  
Author(s):  
Tong-Bou Chang ◽  
Jer-Jia Sheu ◽  
Jhong-Wei Huang ◽  
Yu-Sheng Lin ◽  
Che-Cheng Chang
Keyword(s):  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Cfd Model ◽  
Vehicle Cabin

scholarly journals Effects of Cross Level Air Interaction within Multilevel Underground Carparks on Indoor Air Quality

Fluids ◽  
2020 ◽  
Vol 5 (4) ◽  
pp. 177
Author(s):  
Rafat Al-Waked ◽  
Abdalrahman Yassin ◽  
Abdallah Adwan ◽  
Diala Bani Mostafa
Keyword(s):  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Ventilation System ◽  
Flow Distribution ◽  
Sensitivity Study ◽  
Shopping Mall ◽  
Cfd Model ◽  
Ansys Fluent ◽  
Co Concentration

Ventilation for underground carparks is critical to indoor air quality (IAQ) due to carbon monoxide (CO) emissions from cars. The IAQ within a multi-level underground carpark of a shopping mall has been investigated using computational fluid dynamics (CFD) model based on ANSYS-FLUENT (18.1) software. The effects of car engines types, porosity of supply and exhaust air louvers and ventilation flow rates on IAQ were examined. A mesh sensitivity study was conducted and the CFD model was validated against the fully mixed mathematical formulations of IAQ with a maximum difference in values of 1.5 ppm and an error of 3.4%. The results showed that the ventilation system must be operated at ACH value of more than 2.7 in order to meet the required CO concentration of 50 ppm within the carpark and should be based on running cars within each level rather than the parking capacity of each level. Porosity of louvers affected air flow distribution between parking levels and led to higher dilution of CO. Therefore, modelling a multilevel underground carpark requires closer attention to cross level interaction across Ramps which could affect the CO concentration within a given level.

scholarly journals Effect of Bench Hood Exhaust Usage on Indoor Air Quality in a Chemical Laboratory

2014 ◽  
Vol 1 ◽  
pp. 14-22
Author(s):  
Ayman A. Shaaban ◽  
Samy M. Morcos ◽  
Essam Eldin Khalil ◽  
Mahmoud A. Fouad
Keyword(s):  
Fluid Dynamics ◽  
Experimental Data ◽  
Computational Fluid Dynamics ◽  
Air Quality ◽  
Indoor Air Quality ◽  
Mole Fraction ◽  
Indoor Air ◽  
Cfd Model ◽  
Ansys Fluent ◽  
Computational Fluid Dynamics Cfd

Indoor air quality inside chemical laboratories subjected to gaseous contaminants was investigated numerically throughout the current research using Ansys Fluent 13. The lab is 4.8 m (L) * 4.3 m (W) * 2.73 m (H). The model was built and mesh was generated using Gambit 2.2.30 yielding around 1.4 million cells. To ensure the reliability of the Computational Fluid Dynamics (CFD) model validation was done against experimental data of three cases done by Jin et al. [1]. The model could simulate accurately contaminant mole fraction to the order of 10 Indoor air quality inside chemical laboratories subjected to gaseous contaminants was investigated numerically throughout the current research using Ansys Fluent 13. The lab is 4.8 m (L) * 4.3 m (W) * 2.73 m (H). The model was built and mesh was generated using Gambit 2.2.30 yielding around 1.4 million cells. To ensure the reliability of the Computational Fluid Dynamics (CFD) model validation was done against experimental data of three cases done by Jin et al. [1]. The model could simulate accurately contaminant mole fraction to the order of 10.

Feinstaubfiltrierung: Saubere Luft atmen

2017 ◽  
Vol 22 (07/08) ◽  
pp. 106-107
Author(s):  
Marc Lichtenthäler
Keyword(s):  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Eine Hohe

Viele Studien belegen, dass durch eine hohe Indoor Air Quality die Produktivität gesteigert, Fehlzeiten abgebaut und Herz-Kreislauf-Erkrankungen vermieden werden können. Neben Behandlungs-, OP- und Pflegebereichen eines Klinikums sollten deshalb auch Bereiche mit gut aufbereiteter Raumluft bedacht werden, in denen sich ausschließlich Mitarbeiter aufhalten.

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