Measurements of confined rectangular jet
The flow characteristics of an air jet exiting from a rectangular nozzle of aspect ratio 6.0 in a confined test rig with target were studied. A single hot wire was used to take measurements of the mean and root mean square (rms) velocities which correspond to inlet jet velocities of 10m/s and 20m/s....
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| Format: | Final Year Project (FYP) |
| Language: | English |
| Published: |
2009
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| Online Access: | http://hdl.handle.net/10356/17079 |
| _version_ | 1811684454384533504 |
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| author | Toh, Chee Wee. |
| author2 | Chua Leok Poh |
| author_facet | Chua Leok Poh Toh, Chee Wee. |
| author_sort | Toh, Chee Wee. |
| collection | NTU |
| description | The flow characteristics of an air jet exiting from a rectangular nozzle of aspect ratio 6.0 in a confined test rig with target were studied. A single hot wire was used to take measurements of the mean and root mean square (rms) velocities which correspond to inlet jet velocities of 10m/s and 20m/s. The results showed that the mean velocity profiles reach self preservation in the mixing layer at x/d=3 and x/d=4 for inlet jet velocity of 10m/s and 20m/s respectively. It was also observed that the decay rate and Reynolds number have a positive relationship. An increase in Reynolds number will lead to an increase in decay rate. In addition, the spreading rate of the confined jet had an inverse relationship with the Reynolds number; whereby an increase in Reynolds number will cause a decrease in spreading rate. |
| first_indexed | 2024-10-01T04:28:53Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/17079 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:28:53Z |
| publishDate | 2009 |
| record_format | dspace |
| spelling | ntu-10356/170792023-03-04T19:06:02Z Measurements of confined rectangular jet Toh, Chee Wee. Chua Leok Poh School of Mechanical and Aerospace Engineering DRNTU::Engineering::Mechanical engineering::Fluid mechanics The flow characteristics of an air jet exiting from a rectangular nozzle of aspect ratio 6.0 in a confined test rig with target were studied. A single hot wire was used to take measurements of the mean and root mean square (rms) velocities which correspond to inlet jet velocities of 10m/s and 20m/s. The results showed that the mean velocity profiles reach self preservation in the mixing layer at x/d=3 and x/d=4 for inlet jet velocity of 10m/s and 20m/s respectively. It was also observed that the decay rate and Reynolds number have a positive relationship. An increase in Reynolds number will lead to an increase in decay rate. In addition, the spreading rate of the confined jet had an inverse relationship with the Reynolds number; whereby an increase in Reynolds number will cause a decrease in spreading rate. Bachelor of Engineering 2009-05-29T06:41:36Z 2009-05-29T06:41:36Z 2009 2009 Final Year Project (FYP) http://hdl.handle.net/10356/17079 en Nanyang Technological University 89 p. application/pdf |
| spellingShingle | DRNTU::Engineering::Mechanical engineering::Fluid mechanics Toh, Chee Wee. Measurements of confined rectangular jet |
| title | Measurements of confined rectangular jet |
| title_full | Measurements of confined rectangular jet |
| title_fullStr | Measurements of confined rectangular jet |
| title_full_unstemmed | Measurements of confined rectangular jet |
| title_short | Measurements of confined rectangular jet |
| title_sort | measurements of confined rectangular jet |
| topic | DRNTU::Engineering::Mechanical engineering::Fluid mechanics |
| url | http://hdl.handle.net/10356/17079 |
| work_keys_str_mv | AT tohcheewee measurementsofconfinedrectangularjet |