NDLI: Large-Scale Structures over a Single Street Canyon Immersed in an Urban-Type Boundary Layer

Content Provider	Springer Nature Link
Author	Perret, Laurent Savory, Eric
Copyright Year	2013
Abstract	An analysis of the dynamics of the flow over a street canyon immersed in an atmospheric boundary layer is presented, using particle image velocimetry measurements in a wind tunnel. Care was taken to generate a 1:200 model scale urban type boundary layer that is correctly scaled to the size of the canyon buildings. Using proper orthogonal decomposition (POD) of the velocity field and conditional averaging techniques, it is first shown that the flow above the opening of the canyon consists of a shear layer separating from the upstream obstacle, animated by a coherent flapping motion and generating large-scale vortical structures. These structures are alternately injected into the canyon or shed off the obstacle into the outer flow. It is shown that unsteady fluid exchanges between the canyon and the outer flow are mainly driven by the shear layer. Finally, using POD, the non-linear interaction between the large-scale structures of the oncoming atmospheric boundary layer and the flow over the canyon is demonstrated.
Starting Page	111
Ending Page	131
Page Count	21
File Format	PDF
ISSN	00068314
Journal	Boundary-Layer Meteorology
Volume Number	148
Issue Number	1
e-ISSN	15731472
Language	English
Publisher	Springer Netherlands
Publisher Date	2013-02-21
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Atmospheric turbulence Proper orthogonal decomposition Shear layer dynamics Street canyon Wind tunnel Atmospheric Sciences Meteorology Atmospheric Protection/Air Quality Control/Air Pollution
Content Type	Text
Resource Type	Article
Subject	Atmospheric Science

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Turbulent Transfer Between Street Canyons and the Overlying Atmospheric Boundary Layer

Very-Large-Scale Motions in the Atmospheric Boundary Layer Educed by Snapshot Proper Orthogonal Decomposition

Proper Orthogonal Decomposition of Mesoscale Vertical Velocity in the Convective Boundary Layer

Ventilation Processes in a Three-Dimensional Street Canyon

Analysis of Coherent Structures Within the Atmospheric Boundary Layer

Turbulence Over Urban-type Roughness: Deductions from Wind-tunnel Measurements

Scalar fluxes from urban street canyons. Part I: Laboratory simulation

Surface heating in relation to air temperature, wind and turbulence in an urban street canyon

Tracer Flux Balance at an Urban Canyon Intersection

Large-Scale Structures over a Single Street Canyon Immersed in an Urban-Type Boundary Layer

Similar Documents

Turbulent Transfer Between Street Canyons and the Overlying Atmospheric Boundary Layer

Very-Large-Scale Motions in the Atmospheric Boundary Layer Educed by Snapshot Proper Orthogonal Decomposition

Proper Orthogonal Decomposition of Mesoscale Vertical Velocity in the Convective Boundary Layer

Ventilation Processes in a Three-Dimensional Street Canyon

Analysis of Coherent Structures Within the Atmospheric Boundary Layer

Turbulence Over Urban-type Roughness: Deductions from Wind-tunnel Measurements

Scalar fluxes from urban street canyons. Part I: Laboratory simulation

Surface heating in relation to air temperature, wind and turbulence in an urban street canyon

Tracer Flux Balance at an Urban Canyon Intersection

Large-Scale Structures over a Single Street Canyon Immersed in an Urban-Type Boundary Layer