Effect of Agar Jelly Coating in Rectangular Pipe to Flow Drag Reduction
Drag reduction phenomena can be obtained using additive polymer that can generate turbulence damping by fluid movement and characteristic. Measurements were carried out to investigate pressure losses in square and rectangular horizontal ducts coating of additive Agar solution, with aspect ratios (e)...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Isfahan University of Technology
2017-01-01
|
| Series: | Journal of Applied Fluid Mechanics |
| Subjects: | |
| Online Access: | http://jafmonline.net/JournalArchive/download?file_ID=42966&issue_ID=241 |
| _version_ | 1818564193632124928 |
|---|---|
| author | . Yanuar . Gunawan K. T. Waskito S. Ogata |
| author_facet | . Yanuar . Gunawan K. T. Waskito S. Ogata |
| author_sort | . Yanuar |
| collection | DOAJ |
| description | Drag reduction phenomena can be obtained using additive polymer that can generate turbulence damping by fluid movement and characteristic. Measurements were carried out to investigate pressure losses in square and rectangular horizontal ducts coating of additive Agar solution, with aspect ratios (e) = 1.0 and 0.5, respectively. The increment concentrations are ranged up to 2 times and drag reduction effect was obtained up to 1.5 times bigger. This research analysis was done using friction coefficients and Reynolds numbers relation to put forward drag reduction phenomena. The effect of Agar coating delayed the transition regime. The research results using 1 mm of thickness Agar coating with concentration 20% and 40% concentrations were obtained maximum drag reduction phenomena about 19% at the Reynolds number about 2,600. |
| first_indexed | 2024-12-14T01:25:57Z |
| format | Article |
| id | doaj.art-1ea11f8be77d4eaeb8d28772420a56c9 |
| institution | Directory Open Access Journal |
| issn | 1735-3572 |
| language | English |
| last_indexed | 2024-12-14T01:25:57Z |
| publishDate | 2017-01-01 |
| publisher | Isfahan University of Technology |
| record_format | Article |
| series | Journal of Applied Fluid Mechanics |
| spelling | doaj.art-1ea11f8be77d4eaeb8d28772420a56c92022-12-21T23:22:11ZengIsfahan University of TechnologyJournal of Applied Fluid Mechanics1735-35722017-01-0110411611166.Effect of Agar Jelly Coating in Rectangular Pipe to Flow Drag Reduction. Yanuar0. Gunawan1K. T. Waskito2S. Ogata3University of IndonesiaUniversity of IndonesiaUniversity of IndonesiaTokyo Metropolitan UniversityDrag reduction phenomena can be obtained using additive polymer that can generate turbulence damping by fluid movement and characteristic. Measurements were carried out to investigate pressure losses in square and rectangular horizontal ducts coating of additive Agar solution, with aspect ratios (e) = 1.0 and 0.5, respectively. The increment concentrations are ranged up to 2 times and drag reduction effect was obtained up to 1.5 times bigger. This research analysis was done using friction coefficients and Reynolds numbers relation to put forward drag reduction phenomena. The effect of Agar coating delayed the transition regime. The research results using 1 mm of thickness Agar coating with concentration 20% and 40% concentrations were obtained maximum drag reduction phenomena about 19% at the Reynolds number about 2,600.http://jafmonline.net/JournalArchive/download?file_ID=42966&issue_ID=241Drag reduction; Agar jelly; Coating; Rectangular pipe; Slip velocity. |
| spellingShingle | . Yanuar . Gunawan K. T. Waskito S. Ogata Effect of Agar Jelly Coating in Rectangular Pipe to Flow Drag Reduction Journal of Applied Fluid Mechanics Drag reduction; Agar jelly; Coating; Rectangular pipe; Slip velocity. |
| title | Effect of Agar Jelly Coating in Rectangular Pipe to Flow Drag Reduction |
| title_full | Effect of Agar Jelly Coating in Rectangular Pipe to Flow Drag Reduction |
| title_fullStr | Effect of Agar Jelly Coating in Rectangular Pipe to Flow Drag Reduction |
| title_full_unstemmed | Effect of Agar Jelly Coating in Rectangular Pipe to Flow Drag Reduction |
| title_short | Effect of Agar Jelly Coating in Rectangular Pipe to Flow Drag Reduction |
| title_sort | effect of agar jelly coating in rectangular pipe to flow drag reduction |
| topic | Drag reduction; Agar jelly; Coating; Rectangular pipe; Slip velocity. |
| url | http://jafmonline.net/JournalArchive/download?file_ID=42966&issue_ID=241 |
| work_keys_str_mv | AT yanuar effectofagarjellycoatinginrectangularpipetoflowdragreduction AT gunawan effectofagarjellycoatinginrectangularpipetoflowdragreduction AT ktwaskito effectofagarjellycoatinginrectangularpipetoflowdragreduction AT sogata effectofagarjellycoatinginrectangularpipetoflowdragreduction |