Skip to Main content Skip to Navigation
Theses

Three-dimensional modeling of radiative and convective exchanges in the urban atmosphere

Abstract : In many micrometeorological studies, building resolving models usually assumea neutral atmosphere. Nevertheless, urban radiative transfers play an important role because of their influence on the energy budget. In order to take into account atmospheric radiation and the thermal effects of the buildings in simulations of atmospheric flow and pollutant dispersion in urban areas, we have developed a three-dimensional (3D) atmospheric radiative scheme, in the atmospheric module of the Computational Fluid Dynamics model Code_Saturne. The radiative scheme was previously validated with idealized cases, using as a first step, a constant 3D wind field. In this work, the full coupling of the radiative and thermal schemes with the dynamical model is evaluated. The aim of the first part is to validate the full coupling with the measurements of the simple geometry from the ‘Mock Urban Setting Test' (MUST) experiment. The second part discusses two different approaches to model the radiative exchanges in urban area with a comparison between Code_Saturne and SOLENE. The third part applies the full coupling scheme to show the contribution of the radiative transfer model on the airflow pattern in low wind speed conditions in a 3D urban canopy. In the last part we use the radiative-dynamics coupling to simulate a real urban environment and validate the modeling approach with field measurements from the ‘Canopy and Aerosol Particle Interactions in Toulouse Urban Layer' (CAPITOUL)
Complete list of metadatas

Cited literature [136 references]  Display  Hide  Download

https://pastel.archives-ouvertes.fr/pastel-00666690
Contributor : Abes Star :  Contact
Submitted on : Monday, February 6, 2012 - 9:12:34 AM
Last modification on : Friday, October 23, 2020 - 4:54:54 PM
Long-term archiving on: : Monday, May 7, 2012 - 2:21:16 AM

File

TH2011PEST1111_complete.pdf
Version validated by the jury (STAR)

Identifiers

  • HAL Id : pastel-00666690, version 1

Collections

Citation

Yongfeng Qu. Three-dimensional modeling of radiative and convective exchanges in the urban atmosphere. Earth Sciences. Université Paris-Est, 2011. English. ⟨NNT : 2011PEST1111⟩. ⟨pastel-00666690⟩

Share

Metrics

Record views

1099

Files downloads

1621