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A methodology for 3-D multiphysics CFD simulation of air leakage in building envelopes

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dc.contributor.author Abi Shdid, Caesar
dc.contributor.author Younes, Chadi
dc.date.accessioned 2016-10-17T13:07:24Z
dc.date.available 2016-10-17T13:07:24Z
dc.date.copyright 2013 en_US
dc.identifier.issn 0378-7788 en_US
dc.identifier.uri http://hdl.handle.net/10725/4634
dc.description.abstract Air leaks into a building through various openings and cracks in the building envelope. This leakage affects indoor air quality, human comfort and, primarily, building energy consumption. Several experimental studies have estimated this energy impact to exceed 40% of the heating and cooling costs in buildings. Current methods for evaluating air leakage range from simple air change methods to multizone coupled methods. These vary between being overly simplified to complex sets of equations that utilize hard-to-obtain, often assumed, factors and coefficients. Some CFD simulations have also been attempted. They only consider a small portion of 2-D wall sections with a single predefined air flow path. A modeling methodology is developed in this work that represents a roadmap for performing full 3-D envelope multiphysics hygrothermal simulations for air leakage in buildings. The methodology realistically depicts the various cracks common in an envelope in terms of shape, location, and quantity. It also accounts for the true multiphysics nature of the problem and for various hourly weather variables. The higher accuracy expected with this methodology allows for a more accurate calculation of air leakage heat loading necessary for an efficient building energy design, and for various green and sustainable building design applications. en_US
dc.language.iso en en_US
dc.title A methodology for 3-D multiphysics CFD simulation of air leakage in building envelopes en_US
dc.type Article en_US
dc.description.version Published en_US
dc.author.school SOE en_US
dc.author.idnumber 199431340 en_US
dc.author.department Civil Engineering en_US
dc.description.embargo N/A en_US
dc.relation.journal Energy and Buildings en_US
dc.journal.volume 65 en_US
dc.article.pages 146-158 en_US
dc.keywords CFD en_US
dc.keywords Infiltration en_US
dc.keywords Air Leakage en_US
dc.keywords Hygrothermal en_US
dc.keywords Multiphysics en_US
dc.keywords Exfiltration en_US
dc.keywords Cracks en_US
dc.keywords Building envelope en_US
dc.keywords Heat recovery en_US
dc.identifier.doi http://dx.doi.org/10.1016/j.enbuild.2013.05.050 en_US
dc.identifier.ctation Younes, C., & Shdid, C. A. (2013). A methodology for 3-D multiphysics CFD simulation of air leakage in building envelopes. Energy and Buildings, 65, 146-158. en_US
dc.author.email caesar.abishdid@lau.edu.lb en_US
dc.identifier.tou http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php en_US
dc.identifier.url http://www.sciencedirect.com/science/article/pii/S0378778813003411 en_US
dc.orcid.id https://orcid.org/0000-0002-7114-4795


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