Radiation models for thermal flows at low Mach number

Link:
Autor/in:
Erscheinungsjahr:
2006
Medientyp:
Text
Schlagworte:
  • Fires in vehicle tunnels
  • Low Mach number flows
  • Radiation hydrodynamics
  • Simplified PN approximations
Beschreibung:
  • Simplified approximate models for radiation are proposed to study thermal effects in low Mach flow in open tunnels. The governing equations for fluid dynamics are derived by applying a low Mach asymptotic in the compressible Navier-Stokes problem. Based on an asymptotic analysis we show that the integro-differential equation for radiative transfer can be replaced by a set of differential equations which are independent of angle variable and easy to solve using standard numerical discretizations. As an application we consider a simplified fire model in vehicular tunnels. The results presented in this paper show that the proposed models are able to predict temperature in the tunnels accurately with low computational cost. © 2005 Elsevier Inc. All rights reserved.
Lizenz:
  • info:eu-repo/semantics/closedAccess
Quellsystem:
Forschungsinformationssystem der UHH
Interne Metadaten
Quelldatensatz
oai:www.edit.fis.uni-hamburg.de:publications/95f9e5fb-0d84-4f8a-bb83-67ef9794c146