Consistent boundary conditions for flows within the atmospheric boundary layer

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dc.contributor.author O'Sullivan, John en
dc.contributor.author Archer, Rosalind en
dc.contributor.author Flay, Richard en
dc.date.accessioned 2012-02-23T01:21:36Z en
dc.date.issued 2011 en
dc.identifier.citation Journal of Wind Engineering and Industrial Aerodynamics 99(1):65-77 2011 en
dc.identifier.issn 0167-6105 en
dc.identifier.uri http://hdl.handle.net/2292/11774 en
dc.description.abstract In computational wind engineering the neutrally stable atmospheric boundary layer (ABL) is often simulated using the standard k–ε model. The application of boundary conditions that are inconsistent with the profiles used at the inflow boundary causes streamwise gradients in the solution and prevents the simulation of a horizontally homogeneous boundary layer. In the present work these problems are overcome by applying a simple extension of the shear stress boundary condition at the top of the domain and by using one-dimensional models to generate inflow profiles in equilibrium with the ground boundary condition. This procedure allows the impact of the inconsistent boundary conditions to be quantitatively assessed. It is shown that inconsistent boundary conditions at the top of the domain result in erroneous streamwise gradients throughout the domain. These errors are reduced by enlarging the domain in the vertical direction but are not removed. The errors are also found in simulations with idealised and real topography included in the domain. A brief discussion of the impact of the errors on simulations of wind energy projects is given. en
dc.publisher 2010 Elsevier Ltd. en
dc.relation.ispartofseries Journal of Wind Engineering and Industrial Aerodynamics en
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. Details obtained from http://www.sherpa.ac.uk/romeo/issn/0167-6105/ en
dc.rights.uri https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm en
dc.title Consistent boundary conditions for flows within the atmospheric boundary layer en
dc.type Journal Article en
dc.identifier.doi 10.1016/j.jweia.2010.10.009 en
pubs.issue 1 en
pubs.begin-page 65 en
pubs.volume 99 en
dc.rights.holder Copyright: 2010 Elsevier Ltd. en
pubs.end-page 77 en
dc.rights.accessrights http://purl.org/eprint/accessRights/RestrictedAccess en
pubs.subtype Article en
pubs.elements-id 295604 en
pubs.org-id Engineering en
pubs.org-id Engineering Science en
pubs.org-id Mechanical Engineering en
pubs.record-created-at-source-date 2012-02-15 en


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