A Study in Flow Characteristics of Liquid Falling Film in Spiral Tubes
A study has been done on experimental investigation of the flow characteristic of water falling film in spiral tubes. The ratio of the surface film velocity to average film velocity (us/uF) is less than 1 for low angle of inclination (4-8 o) where as it increases as the angle of inclination increase...
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| Format: | Article |
| Language: | English |
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Tikrit University
2007-06-01
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| Series: | Tikrit Journal of Engineering Sciences |
| Subjects: | |
| Online Access: | https://tj-es.com/ojs/index.php/tjes/article/view/681 |
| _version_ | 1797782441681747968 |
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| author | Zaid A. Abdl-rahman Ghassan Hamad Abdullah |
| author_facet | Zaid A. Abdl-rahman Ghassan Hamad Abdullah |
| author_sort | Zaid A. Abdl-rahman |
| collection | DOAJ |
| description | A study has been done on experimental investigation of the flow characteristic of water falling film in spiral tubes. The ratio of the surface film velocity to average film velocity (us/uF) is less than 1 for low angle of inclination (4-8 o) where as it increases as the angle of inclination increases reaching a value of about us/uF = 1.2 . This small value of the velocity ratio is due to the liquid film rotation in coil which causes some deletion. The film thickness (δ) experimental data correlated well bythe following equation: δ = 0.0048 ReF0.7064 sin-1/3θ ( with R2 = 0.959 )
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| first_indexed | 2024-03-13T00:11:01Z |
| format | Article |
| id | doaj.art-e2ffbbadcba14bdfb2004790316b3d34 |
| institution | Directory Open Access Journal |
| issn | 1813-162X 2312-7589 |
| language | English |
| last_indexed | 2024-03-13T00:11:01Z |
| publishDate | 2007-06-01 |
| publisher | Tikrit University |
| record_format | Article |
| series | Tikrit Journal of Engineering Sciences |
| spelling | doaj.art-e2ffbbadcba14bdfb2004790316b3d342023-07-12T12:56:22ZengTikrit UniversityTikrit Journal of Engineering Sciences1813-162X2312-75892007-06-0114210.25130/tjes.14.2.05A Study in Flow Characteristics of Liquid Falling Film in Spiral TubesZaid A. Abdl-rahman0Ghassan Hamad Abdullah1Chemical Eng. Dept., Tikrit University, IraqChemical Eng. Dept., Tikrit University, IraqA study has been done on experimental investigation of the flow characteristic of water falling film in spiral tubes. The ratio of the surface film velocity to average film velocity (us/uF) is less than 1 for low angle of inclination (4-8 o) where as it increases as the angle of inclination increases reaching a value of about us/uF = 1.2 . This small value of the velocity ratio is due to the liquid film rotation in coil which causes some deletion. The film thickness (δ) experimental data correlated well bythe following equation: δ = 0.0048 ReF0.7064 sin-1/3θ ( with R2 = 0.959 ) https://tj-es.com/ojs/index.php/tjes/article/view/681Coilsspiral tubesfalling filmhydrodynamic |
| spellingShingle | Zaid A. Abdl-rahman Ghassan Hamad Abdullah A Study in Flow Characteristics of Liquid Falling Film in Spiral Tubes Tikrit Journal of Engineering Sciences Coils spiral tubes falling film hydrodynamic |
| title | A Study in Flow Characteristics of Liquid Falling Film in Spiral Tubes |
| title_full | A Study in Flow Characteristics of Liquid Falling Film in Spiral Tubes |
| title_fullStr | A Study in Flow Characteristics of Liquid Falling Film in Spiral Tubes |
| title_full_unstemmed | A Study in Flow Characteristics of Liquid Falling Film in Spiral Tubes |
| title_short | A Study in Flow Characteristics of Liquid Falling Film in Spiral Tubes |
| title_sort | study in flow characteristics of liquid falling film in spiral tubes |
| topic | Coils spiral tubes falling film hydrodynamic |
| url | https://tj-es.com/ojs/index.php/tjes/article/view/681 |
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