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Conference Paper: Adjustment of roughness sublayer in turbulent flows over two-dimensional idealised roughness elements
| Title | Adjustment of roughness sublayer in turbulent flows over two-dimensional idealised roughness elements |
|---|---|
| Authors | |
| Issue Date | 2015 |
| Publisher | Copernicus GmbH. The Journal's web site is located at http://www.geophysical-research-abstracts.net |
| Citation | The 2015 General Assembly of the European Geosciences Union (EGU), Vienna, Austria, 12-17 April 2015. In Geophysical Research Abstracts, 2015, v. 17, no. EGU2015-5064 How to Cite? |
| Abstract | The atmospheric boundary layer (ABL) immediately above the urban canopy is the roughness sublayer (RSL). In this layer, flows and turbulence are strongly affected by the roughness elements beneath, e.g. building obstacles. The wind flows over urban areas could be represented by conventional logarithmic law of the wall (log-law) in the neutrally stratified ABL. However, in the RSL region, the vertical wind profile deviates from that predicted from log-law and the effect could be extended from ground level up to several canopy heights. As a result, the Monin-Obukhov similarity theory (MOST) fails and an additional length scale is required to describe the flows. The key aim of this study is to introduce a simple wind profile model which accounts for the effect of the RSL in neutral ... |
| Description | Session AS2.2 - Turbulence in Atmospheric and Oceanic Boundary Layers: no. EGU2015-5064 |
| Persistent Identifier | http://hdl.handle.net/10722/217466 |
| ISSN |
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Ho, YK | - |
| dc.contributor.author | Liu, CH | - |
| dc.date.accessioned | 2015-09-18T06:00:08Z | - |
| dc.date.available | 2015-09-18T06:00:08Z | - |
| dc.date.issued | 2015 | - |
| dc.identifier.citation | The 2015 General Assembly of the European Geosciences Union (EGU), Vienna, Austria, 12-17 April 2015. In Geophysical Research Abstracts, 2015, v. 17, no. EGU2015-5064 | - |
| dc.identifier.issn | 1607-7962 | - |
| dc.identifier.uri | http://hdl.handle.net/10722/217466 | - |
| dc.description | Session AS2.2 - Turbulence in Atmospheric and Oceanic Boundary Layers: no. EGU2015-5064 | - |
| dc.description.abstract | The atmospheric boundary layer (ABL) immediately above the urban canopy is the roughness sublayer (RSL). In this layer, flows and turbulence are strongly affected by the roughness elements beneath, e.g. building obstacles. The wind flows over urban areas could be represented by conventional logarithmic law of the wall (log-law) in the neutrally stratified ABL. However, in the RSL region, the vertical wind profile deviates from that predicted from log-law and the effect could be extended from ground level up to several canopy heights. As a result, the Monin-Obukhov similarity theory (MOST) fails and an additional length scale is required to describe the flows. The key aim of this study is to introduce a simple wind profile model which accounts for the effect of the RSL in neutral ... | - |
| dc.language | eng | - |
| dc.publisher | Copernicus GmbH. The Journal's web site is located at http://www.geophysical-research-abstracts.net | - |
| dc.relation.ispartof | Geophysical Research Abstracts | - |
| dc.title | Adjustment of roughness sublayer in turbulent flows over two-dimensional idealised roughness elements | - |
| dc.type | Conference_Paper | - |
| dc.identifier.email | Liu, CH: chliu@hkucc.hku.hk | - |
| dc.identifier.authority | Liu, CH=rp00152 | - |
| dc.description.nature | published_or_final_version | - |
| dc.identifier.hkuros | 251777 | - |
| dc.identifier.volume | 17 | - |
| dc.publisher.place | Germany | - |
| dc.identifier.issnl | 1029-7006 | - |