Effect of angle of turn on loss characteristics and flow rectification of curve diffuser
Curve diffuser is often used in HVAC and wind tunnel systems to provide pressure recovery and avoid excessive energy loss to the surrounding environment. Performance of curve diffuser is disturbed mainly by the presences of flow separation and secondary flow vortices occurred due to the effect...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Semarak Ilmu Publishing
2022
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/6870/1/J13789_08a61717f2af3c8b1546e24b8398450b.pdf |
| _version_ | 1825710269395894272 |
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| author | Hau, Chin Yong Nordin, Normayati Rasidi, Shamsuri Mohamed Teo, Wen Yong Anuar, Muhammad Musleh Shariff, Muhammad Zahid Firdaus |
| author_facet | Hau, Chin Yong Nordin, Normayati Rasidi, Shamsuri Mohamed Teo, Wen Yong Anuar, Muhammad Musleh Shariff, Muhammad Zahid Firdaus |
| author_sort | Hau, Chin Yong |
| collection | UTHM |
| description | Curve diffuser is often used in HVAC and wind tunnel systems to provide pressure
recovery and avoid excessive energy loss to the surrounding environment.
Performance of curve diffuser is disturbed mainly by the presences of flow separation
and secondary flow vortices occurred due to the effect of turning angle, in which scarce
literature found. In this study, the effect of turning angle from 30° to 180° configured
with an area ratio of 1.60 to 4.00 and inflow Reynolds number of 5.934x104 – 1.783x105
on loss characteristics and flow rectification of curve diffuser is investigated with
optimum configuration is proposed. Performance of curve diffuser is evaluated in
terms of pressure recovery and flow uniformity using ANSYS CFD equipped with
validated Standard k-ɛ model (ske) and enhanced wall treatment of y+ = 1.2 - 1.7.
Results show that performance of pressure recovery and flow uniformity decreases
respectively by 85.71% and 45.84% as the angle of turn increases from 30° to 180°.
Curve diffuser with minimum angle of turn 30o
, optimum area ratio 2.16 and
intermediate Rein 8.163x104
turns out to be the best configuration to provide pressure
recovery of 0.399 and flow uniformity of 3.630 m/s. |
| first_indexed | 2024-03-05T21:55:03Z |
| format | Article |
| id | uthm.eprints-6870 |
| institution | Universiti Tun Hussein Onn Malaysia |
| language | English |
| last_indexed | 2024-03-05T21:55:03Z |
| publishDate | 2022 |
| publisher | Semarak Ilmu Publishing |
| record_format | dspace |
| spelling | uthm.eprints-68702022-03-28T08:01:08Z http://eprints.uthm.edu.my/6870/ Effect of angle of turn on loss characteristics and flow rectification of curve diffuser Hau, Chin Yong Nordin, Normayati Rasidi, Shamsuri Mohamed Teo, Wen Yong Anuar, Muhammad Musleh Shariff, Muhammad Zahid Firdaus TJ Mechanical engineering and machinery Curve diffuser is often used in HVAC and wind tunnel systems to provide pressure recovery and avoid excessive energy loss to the surrounding environment. Performance of curve diffuser is disturbed mainly by the presences of flow separation and secondary flow vortices occurred due to the effect of turning angle, in which scarce literature found. In this study, the effect of turning angle from 30° to 180° configured with an area ratio of 1.60 to 4.00 and inflow Reynolds number of 5.934x104 – 1.783x105 on loss characteristics and flow rectification of curve diffuser is investigated with optimum configuration is proposed. Performance of curve diffuser is evaluated in terms of pressure recovery and flow uniformity using ANSYS CFD equipped with validated Standard k-ɛ model (ske) and enhanced wall treatment of y+ = 1.2 - 1.7. Results show that performance of pressure recovery and flow uniformity decreases respectively by 85.71% and 45.84% as the angle of turn increases from 30° to 180°. Curve diffuser with minimum angle of turn 30o , optimum area ratio 2.16 and intermediate Rein 8.163x104 turns out to be the best configuration to provide pressure recovery of 0.399 and flow uniformity of 3.630 m/s. Semarak Ilmu Publishing 2022 Article PeerReviewed text en http://eprints.uthm.edu.my/6870/1/J13789_08a61717f2af3c8b1546e24b8398450b.pdf Hau, Chin Yong and Nordin, Normayati and Rasidi, Shamsuri Mohamed and Teo, Wen Yong and Anuar, Muhammad Musleh and Shariff, Muhammad Zahid Firdaus (2022) Effect of angle of turn on loss characteristics and flow rectification of curve diffuser. CFD Letters, 14 (1). pp. 38-51. ISSN 2180-1363 https://doi.org/10.37934/cfdl.14.1.3851 |
| spellingShingle | TJ Mechanical engineering and machinery Hau, Chin Yong Nordin, Normayati Rasidi, Shamsuri Mohamed Teo, Wen Yong Anuar, Muhammad Musleh Shariff, Muhammad Zahid Firdaus Effect of angle of turn on loss characteristics and flow rectification of curve diffuser |
| title | Effect of angle of turn on loss characteristics and flow rectification of curve diffuser |
| title_full | Effect of angle of turn on loss characteristics and flow rectification of curve diffuser |
| title_fullStr | Effect of angle of turn on loss characteristics and flow rectification of curve diffuser |
| title_full_unstemmed | Effect of angle of turn on loss characteristics and flow rectification of curve diffuser |
| title_short | Effect of angle of turn on loss characteristics and flow rectification of curve diffuser |
| title_sort | effect of angle of turn on loss characteristics and flow rectification of curve diffuser |
| topic | TJ Mechanical engineering and machinery |
| url | http://eprints.uthm.edu.my/6870/1/J13789_08a61717f2af3c8b1546e24b8398450b.pdf |
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