Skip to main content
Article thumbnail
Location of Repository

Large-eddy simulation of dispersion from surface sources in arrays of obstacles

By V.B.L. Boppana, Z.T. Xie and I.P. Castro


Towards meeting the objective of simulating heat transfer processes in urban areas, the study of dispersion from a scalar (ground) surface area source has been addressed as a first step, as dispersion from such a source is in some ways analogous to heat transfer from the surface. Two different urban-like geometries are considered in this study: an array with uniform height cubes and an array with random height cuboids. Some point measurement dispersion experiments in a wind tunnel have previously been carried out in identical arrays using a naphthalene sublimation technique. Large-eddy simulations (LES) of these experiments have been performed as a validation study and the details, presented here, demonstrate the influence of the roughness morphology on the dispersion processes and the power of LES for obtaining physically important scalar turbulent flux information

Topics: TL
Year: 2010
OAI identifier:
Provided by: e-Prints Soton

Suggested articles


  1. (2008). CD–Adapco’s CCM user guide, STAR–CD Version 4.08 Xie ZT, Castro IP (2006) LES and RANS for turbulent flow over arrays of wallmounted obstacles. Flow Turbulence and Combust 76:291–392 Xie ZT,
  2. (2009). Hybrid ventilation for low energy building design in south China. Build and Environ 44:2245–2255 doi
  3. (2004). Large-eddy simulation of turbulent organized structures within and above explicitly resolved cube arrays. Boundary-Layer Meteorol 112:343–368 doi
  4. (1999). LES of heat transfer in turbulent flow over a wall-mounted matrix of cubes. In: Voke PR, Sandham ND, Kleiser L (eds) Direct and Large Eddy Simulation III (ERCOFTAC series), Kluwer, Dordrecht, pp 51–62 Meinders ER, Hanjali´ c K doi
  5. (2004). Scalar fluxes from urban street canyons. Part I: Laboratory simulation. Boundary-Layer Meteorol 113:369–385 doi
  6. (2005). Urban thermal environment measurements and numerical simulation for an actual complex urban area covering a large district heating and cooling system in summer. doi

To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.