Numerical and experimental investigation of utilizing the porous media model for windbreaks CFD simulation
<p dir="ltr">Windbreaks such as vegetation barriers, fences, and buildings’ perforated facades are used in various environmental and wind mitigation applications. Numerical simulation of the airflow through windbreaks is challenging as modeling of the exact geometry needs large compu...
محفوظ في:
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| مؤلفون آخرون: | |
| منشور في: |
2021
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| الموضوعات: | |
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إضافة وسم
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| _version_ | 1864513559466082304 |
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| author | Ahmed Osama Mahgoub (17052393) |
| author2 | Saud Ghani (7205633) |
| author2_role | author |
| author_facet | Ahmed Osama Mahgoub (17052393) Saud Ghani (7205633) |
| author_role | author |
| dc.creator.none.fl_str_mv | Ahmed Osama Mahgoub (17052393) Saud Ghani (7205633) |
| dc.date.none.fl_str_mv | 2021-02-01T00:00:00Z |
| dc.identifier.none.fl_str_mv | 10.1016/j.scs.2020.102648 |
| dc.relation.none.fl_str_mv | https://figshare.com/articles/journal_contribution/Numerical_and_experimental_investigation_of_utilizing_the_porous_media_model_for_windbreaks_CFD_simulation/24204156 |
| dc.rights.none.fl_str_mv | CC BY 4.0 info:eu-repo/semantics/openAccess |
| dc.subject.none.fl_str_mv | Engineering Environmental engineering Fluid mechanics and thermal engineering Windbreaks Perforated surface Porous media models Porosity PIV Pressure drop CFD |
| dc.title.none.fl_str_mv | Numerical and experimental investigation of utilizing the porous media model for windbreaks CFD simulation |
| dc.type.none.fl_str_mv | Text Journal contribution info:eu-repo/semantics/publishedVersion text contribution to journal |
| description | <p dir="ltr">Windbreaks such as vegetation barriers, fences, and buildings’ perforated facades are used in various environmental and wind mitigation applications. Numerical simulation of the airflow through windbreaks is challenging as modeling of the exact geometry needs large computational power. The computational cost can be reduced by modeling the windbreaks using the porous media model. The computational fluid dynamics (CFD) model uses empirical coefficients that need to be determined experimentally. This research develops empirical formulae to determine the needed viscous and inertial loss coefficients as a function of porosity for perforated windbreaks. Particle image velocimetry (PIV) experiments and pressure measurements were performed in a wind tunnel for scaled windbreaks models of porosity ratios ranging from 0.25 to 0.6. CFD simulations were carried out for the exact geometry and for the approximated numerical model. The CFD results of both models were compared against the experimental results. Hence, a correlation between the windbreaks porosity and the needed coefficients to utilize the CFD porous media model was obtained. Compared to exact geometry CFD results, the average velocity and pressure drop values obtained from the porous media model yielded an average error of 10.5% and 12%, respectively.</p><h2>Other Information</h2><p dir="ltr">Published in: Sustainable Cities and Society<br>License: <a href="http://creativecommons.org/licenses/by/4.0/" target="_blank">http://creativecommons.org/licenses/by/4.0/</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.1016/j.scs.2020.102648" target="_blank">https://dx.doi.org/10.1016/j.scs.2020.102648</a></p> |
| eu_rights_str_mv | openAccess |
| id | Manara2_df2e021b78be57a14dd816f30c1a6955 |
| identifier_str_mv | 10.1016/j.scs.2020.102648 |
| network_acronym_str | Manara2 |
| network_name_str | Manara2 |
| oai_identifier_str | oai:figshare.com:article/24204156 |
| publishDate | 2021 |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | CC BY 4.0 |
| spelling | Numerical and experimental investigation of utilizing the porous media model for windbreaks CFD simulationAhmed Osama Mahgoub (17052393)Saud Ghani (7205633)EngineeringEnvironmental engineeringFluid mechanics and thermal engineeringWindbreaksPerforated surfacePorous media modelsPorosityPIVPressure dropCFD<p dir="ltr">Windbreaks such as vegetation barriers, fences, and buildings’ perforated facades are used in various environmental and wind mitigation applications. Numerical simulation of the airflow through windbreaks is challenging as modeling of the exact geometry needs large computational power. The computational cost can be reduced by modeling the windbreaks using the porous media model. The computational fluid dynamics (CFD) model uses empirical coefficients that need to be determined experimentally. This research develops empirical formulae to determine the needed viscous and inertial loss coefficients as a function of porosity for perforated windbreaks. Particle image velocimetry (PIV) experiments and pressure measurements were performed in a wind tunnel for scaled windbreaks models of porosity ratios ranging from 0.25 to 0.6. CFD simulations were carried out for the exact geometry and for the approximated numerical model. The CFD results of both models were compared against the experimental results. Hence, a correlation between the windbreaks porosity and the needed coefficients to utilize the CFD porous media model was obtained. Compared to exact geometry CFD results, the average velocity and pressure drop values obtained from the porous media model yielded an average error of 10.5% and 12%, respectively.</p><h2>Other Information</h2><p dir="ltr">Published in: Sustainable Cities and Society<br>License: <a href="http://creativecommons.org/licenses/by/4.0/" target="_blank">http://creativecommons.org/licenses/by/4.0/</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.1016/j.scs.2020.102648" target="_blank">https://dx.doi.org/10.1016/j.scs.2020.102648</a></p>2021-02-01T00:00:00ZTextJournal contributioninfo:eu-repo/semantics/publishedVersiontextcontribution to journal10.1016/j.scs.2020.102648https://figshare.com/articles/journal_contribution/Numerical_and_experimental_investigation_of_utilizing_the_porous_media_model_for_windbreaks_CFD_simulation/24204156CC BY 4.0info:eu-repo/semantics/openAccessoai:figshare.com:article/242041562021-02-01T00:00:00Z |
| spellingShingle | Numerical and experimental investigation of utilizing the porous media model for windbreaks CFD simulation Ahmed Osama Mahgoub (17052393) Engineering Environmental engineering Fluid mechanics and thermal engineering Windbreaks Perforated surface Porous media models Porosity PIV Pressure drop CFD |
| status_str | publishedVersion |
| title | Numerical and experimental investigation of utilizing the porous media model for windbreaks CFD simulation |
| title_full | Numerical and experimental investigation of utilizing the porous media model for windbreaks CFD simulation |
| title_fullStr | Numerical and experimental investigation of utilizing the porous media model for windbreaks CFD simulation |
| title_full_unstemmed | Numerical and experimental investigation of utilizing the porous media model for windbreaks CFD simulation |
| title_short | Numerical and experimental investigation of utilizing the porous media model for windbreaks CFD simulation |
| title_sort | Numerical and experimental investigation of utilizing the porous media model for windbreaks CFD simulation |
| topic | Engineering Environmental engineering Fluid mechanics and thermal engineering Windbreaks Perforated surface Porous media models Porosity PIV Pressure drop CFD |