Experimental and Numerical Investigation of Drag Force at High Speed Diver Motion in Different Depths from Free Surface
In this study, the drag force exerted on diver body is investigated by computational fluid dynamic and then the results validity is compared with towing tank experiments. The final target of this research is to evaluate thruster power for diver to reach the high speed motion underwater. In the last...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Isfahan University of Technology
2017-01-01
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| Series: | Journal of Applied Fluid Mechanics |
| Subjects: | |
| Online Access: | http://jafmonline.net/JournalArchive/download?file_ID=41791&issue_ID=238 |
| _version_ | 1818369172285947904 |
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| author | M. R. Sadeghizadeh Bahador Saranjam R. Kamali |
| author_facet | M. R. Sadeghizadeh Bahador Saranjam R. Kamali |
| author_sort | M. R. Sadeghizadeh |
| collection | DOAJ |
| description | In this study, the drag force exerted on diver body is investigated by computational fluid dynamic and then the results validity is compared with towing tank experiments. The final target of this research is to evaluate thruster power for diver to reach the high speed motion underwater. In the last decade, the low speed diver motion has been studied by researchers for sport purposes and improvement of diving time, while in this research authors have tried to increase diver speed up to 10 ms-1 by use of electrical thruster mechanism. The numerical simulations are done by computational fluid dynamics considering three dimensional two phase turbulent flow. The geometry of the swimmers' bodies was generated by 3-D scanning and image modeling of real divers in experimental diving test. Different turbulent models might be applied in specific case but the favorable one (k– method) is selected for estimating the forces on the divers. The experiments are done by five divers and one mannequin with 5 depths and 9 speeds. The numerical simulation results agree well with those of experimental tests in range up to 8 ms-1 but because of lab limitations more results between 8 ms-1 and 10 ms-1 were not accessible. |
| first_indexed | 2024-12-13T23:19:37Z |
| format | Article |
| id | doaj.art-70a1ffdc821c40329d2c8203f508720c |
| institution | Directory Open Access Journal |
| issn | 1735-3572 |
| language | English |
| last_indexed | 2024-12-13T23:19:37Z |
| publishDate | 2017-01-01 |
| publisher | Isfahan University of Technology |
| record_format | Article |
| series | Journal of Applied Fluid Mechanics |
| spelling | doaj.art-70a1ffdc821c40329d2c8203f508720c2022-12-21T23:27:50ZengIsfahan University of TechnologyJournal of Applied Fluid Mechanics1735-35722017-01-01101343352.Experimental and Numerical Investigation of Drag Force at High Speed Diver Motion in Different Depths from Free SurfaceM. R. Sadeghizadeh0Bahador Saranjam1R. Kamali21Department of Hydro-Aerodynamic Research Center of MUT UniversityShiraz University2School of Mechanic Engineering , Shiraz UniversityIn this study, the drag force exerted on diver body is investigated by computational fluid dynamic and then the results validity is compared with towing tank experiments. The final target of this research is to evaluate thruster power for diver to reach the high speed motion underwater. In the last decade, the low speed diver motion has been studied by researchers for sport purposes and improvement of diving time, while in this research authors have tried to increase diver speed up to 10 ms-1 by use of electrical thruster mechanism. The numerical simulations are done by computational fluid dynamics considering three dimensional two phase turbulent flow. The geometry of the swimmers' bodies was generated by 3-D scanning and image modeling of real divers in experimental diving test. Different turbulent models might be applied in specific case but the favorable one (k– method) is selected for estimating the forces on the divers. The experiments are done by five divers and one mannequin with 5 depths and 9 speeds. The numerical simulation results agree well with those of experimental tests in range up to 8 ms-1 but because of lab limitations more results between 8 ms-1 and 10 ms-1 were not accessible.http://jafmonline.net/JournalArchive/download?file_ID=41791&issue_ID=238Divers drag force CFD Towing test |
| spellingShingle | M. R. Sadeghizadeh Bahador Saranjam R. Kamali Experimental and Numerical Investigation of Drag Force at High Speed Diver Motion in Different Depths from Free Surface Journal of Applied Fluid Mechanics Divers drag force CFD Towing test |
| title | Experimental and Numerical Investigation of Drag Force at High Speed Diver Motion in Different Depths from Free Surface |
| title_full | Experimental and Numerical Investigation of Drag Force at High Speed Diver Motion in Different Depths from Free Surface |
| title_fullStr | Experimental and Numerical Investigation of Drag Force at High Speed Diver Motion in Different Depths from Free Surface |
| title_full_unstemmed | Experimental and Numerical Investigation of Drag Force at High Speed Diver Motion in Different Depths from Free Surface |
| title_short | Experimental and Numerical Investigation of Drag Force at High Speed Diver Motion in Different Depths from Free Surface |
| title_sort | experimental and numerical investigation of drag force at high speed diver motion in different depths from free surface |
| topic | Divers drag force CFD Towing test |
| url | http://jafmonline.net/JournalArchive/download?file_ID=41791&issue_ID=238 |
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