A methodology for 3-D multiphysics CFD simulation of air leakage in building envelopes
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...
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| مؤلفون آخرون: | |
| التنسيق: | article |
| منشور في: |
2013
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| الوصول للمادة أونلاين: | http://hdl.handle.net/10725/4634 http://dx.doi.org/10.1016/j.enbuild.2013.05.050 http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php http://www.sciencedirect.com/science/article/pii/S0378778813003411 |
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| _version_ | 1864513464082366464 |
|---|---|
| author | Abi Shdid, Caesar |
| author2 | Younes, Chadi |
| author2_role | author |
| author_facet | Abi Shdid, Caesar Younes, Chadi |
| author_role | author |
| dc.creator.none.fl_str_mv | Abi Shdid, Caesar Younes, Chadi |
| dc.date.none.fl_str_mv | 2013 2016-10-17T13:07:24Z 2016-10-17T13:07:24Z 2016-10-17 |
| dc.identifier.none.fl_str_mv | 0378-7788 http://hdl.handle.net/10725/4634 http://dx.doi.org/10.1016/j.enbuild.2013.05.050 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. http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php http://www.sciencedirect.com/science/article/pii/S0378778813003411 |
| dc.language.none.fl_str_mv | en |
| dc.relation.none.fl_str_mv | Energy and Buildings |
| dc.rights.*.fl_str_mv | info:eu-repo/semantics/openAccess |
| dc.title.none.fl_str_mv | A methodology for 3-D multiphysics CFD simulation of air leakage in building envelopes |
| dc.type.none.fl_str_mv | Article info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article |
| description | 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. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | LAURepo_aac18efa72fd513bf7c2dd7499f63d4d |
| identifier_str_mv | 0378-7788 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. |
| language_invalid_str_mv | en |
| network_acronym_str | LAURepo |
| network_name_str | Lebanese American University repository |
| oai_identifier_str | oai:laur.lau.edu.lb:10725/4634 |
| publishDate | 2013 |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| spelling | A methodology for 3-D multiphysics CFD simulation of air leakage in building envelopesAbi Shdid, CaesarYounes, ChadiAir 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.PublishedN/A2016-10-17T13:07:24Z2016-10-17T13:07:24Z20132016-10-17Articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article0378-7788http://hdl.handle.net/10725/4634http://dx.doi.org/10.1016/j.enbuild.2013.05.050Younes, 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.http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.phphttp://www.sciencedirect.com/science/article/pii/S0378778813003411enEnergy and Buildingsinfo:eu-repo/semantics/openAccessoai:laur.lau.edu.lb:10725/46342021-03-19T10:03:21Z |
| spellingShingle | A methodology for 3-D multiphysics CFD simulation of air leakage in building envelopes Abi Shdid, Caesar |
| status_str | publishedVersion |
| title | A methodology for 3-D multiphysics CFD simulation of air leakage in building envelopes |
| title_full | A methodology for 3-D multiphysics CFD simulation of air leakage in building envelopes |
| title_fullStr | A methodology for 3-D multiphysics CFD simulation of air leakage in building envelopes |
| title_full_unstemmed | A methodology for 3-D multiphysics CFD simulation of air leakage in building envelopes |
| title_short | A methodology for 3-D multiphysics CFD simulation of air leakage in building envelopes |
| title_sort | A methodology for 3-D multiphysics CFD simulation of air leakage in building envelopes |
| url | http://hdl.handle.net/10725/4634 http://dx.doi.org/10.1016/j.enbuild.2013.05.050 http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php http://www.sciencedirect.com/science/article/pii/S0378778813003411 |