About: Air pollutant transmission has significant influences on indoor air quality (IAQ). It is crucial to study mechanisms involved with airborne contaminant dispersion indoors. However, relationship between pollutant diffusion coefficient and viscosity in enclosed spaces has not been fully understood. In this study, turbulent Schmidt number (Sc(t)) was modified as a function of turbulent kinematic viscosity rather than a constant value to better simulate dispersion of airborne contaminant in two typical enclosed spaces: an aircraft cabin and an office room. An experiment for airborne contaminant transmission was conducted in an aircraft cabin mockup. Combining with experimental data in the office room with an under floor air distribution (UFAD) system from literature, Sc(t) was modified based on airflow vortex structures. The performance of RNG k-ε model using the modified Sc(t) was found to be obviously better than that using the default Sc(t) value in both the two enclosed spaces. In addition, model applicability to different enclosed spaces was analyzed based on the airflow vibration frequency.   Goto Sponge  NotDistinct  Permalink

An Entity of Type : fabio:Abstract, within Data Space : covidontheweb.inria.fr associated with source document(s)

AttributesValues
type
value
  • Air pollutant transmission has significant influences on indoor air quality (IAQ). It is crucial to study mechanisms involved with airborne contaminant dispersion indoors. However, relationship between pollutant diffusion coefficient and viscosity in enclosed spaces has not been fully understood. In this study, turbulent Schmidt number (Sc(t)) was modified as a function of turbulent kinematic viscosity rather than a constant value to better simulate dispersion of airborne contaminant in two typical enclosed spaces: an aircraft cabin and an office room. An experiment for airborne contaminant transmission was conducted in an aircraft cabin mockup. Combining with experimental data in the office room with an under floor air distribution (UFAD) system from literature, Sc(t) was modified based on airflow vortex structures. The performance of RNG k-ε model using the modified Sc(t) was found to be obviously better than that using the default Sc(t) value in both the two enclosed spaces. In addition, model applicability to different enclosed spaces was analyzed based on the airflow vibration frequency.
subject
  • Toxicology
  • Air pollution
  • Industrial hygiene
  • Rooms
  • Rotation
  • Viscosity
  • Building biology
  • Fluid dynamics
  • Heating, ventilating, and air conditioning
  • Occupational safety and health
  • Climate forcing
  • Aircraft cabin components
part of
is abstract of
is hasSource of
Faceted Search & Find service v1.13.91 as of Mar 24 2020


Alternative Linked Data Documents: Sponger | ODE     Content Formats:       RDF       ODATA       Microdata      About   
This material is Open Knowledge   W3C Semantic Web Technology [RDF Data]
OpenLink Virtuoso version 07.20.3229 as of Jul 10 2020, on Linux (x86_64-pc-linux-gnu), Single-Server Edition (94 GB total memory)
Data on this page belongs to its respective rights holders.
Virtuoso Faceted Browser Copyright © 2009-2025 OpenLink Software