Effects of upstream square blockage on lift behaviour of a rotating cylinder
The usage of Unmanned Aerial Vehicle (UAV) is getting more and more significant in both the defense and commercial industry. As these UAVs normally carry a high payload and require a long runaway, it is important to develop a new method to increase the lift coefficient during takeoff and landing. Th...
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| Format: | Thesis |
| Language: | English |
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2016
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| Online Access: | http://psasir.upm.edu.my/id/eprint/70469/ http://psasir.upm.edu.my/id/eprint/70469/1/FK%202016%2083%20IR.pdf |
| _version_ | 1848856699793833984 |
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| author | Cheong, Xiang Hou |
| author_facet | Cheong, Xiang Hou |
| author_sort | Cheong, Xiang Hou |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | The usage of Unmanned Aerial Vehicle (UAV) is getting more and more significant in both the defense and commercial industry. As these UAVs normally carry a high payload and require a long runaway, it is important to develop a new method to increase the lift coefficient during takeoff and landing. The objective of the study is to study the lift generated by rotating cylinder at different spin rate at typical takeoff speed and also the effect upstream square blockage towards the lift generated by the rotating cylinder. Both wind tunnel experimental testing and numerical simulation was carried out to investigate the effect of different size of upstream blockage towards the performance of the rotating cylinder. The simulation adopted a fully turbulent flow, having Reynolds number varying from 5000 to 8000 and angular velocity of rotating cylinder
varying from 0 to 3000 RPM. Validation of RANS code ANSYS Fluent was done with experimental results. The simulations results suggest that the blockage with the height of 32mm and 40mm, width of 8mm with a distance of 48mm from the center of the rotating cylinder will be the best configuration with near to tenth fold improvement in lift generation |
| first_indexed | 2025-11-15T11:45:49Z |
| format | Thesis |
| id | upm-70469 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T11:45:49Z |
| publishDate | 2016 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-704692019-08-21T03:55:03Z http://psasir.upm.edu.my/id/eprint/70469/ Effects of upstream square blockage on lift behaviour of a rotating cylinder Cheong, Xiang Hou The usage of Unmanned Aerial Vehicle (UAV) is getting more and more significant in both the defense and commercial industry. As these UAVs normally carry a high payload and require a long runaway, it is important to develop a new method to increase the lift coefficient during takeoff and landing. The objective of the study is to study the lift generated by rotating cylinder at different spin rate at typical takeoff speed and also the effect upstream square blockage towards the lift generated by the rotating cylinder. Both wind tunnel experimental testing and numerical simulation was carried out to investigate the effect of different size of upstream blockage towards the performance of the rotating cylinder. The simulation adopted a fully turbulent flow, having Reynolds number varying from 5000 to 8000 and angular velocity of rotating cylinder varying from 0 to 3000 RPM. Validation of RANS code ANSYS Fluent was done with experimental results. The simulations results suggest that the blockage with the height of 32mm and 40mm, width of 8mm with a distance of 48mm from the center of the rotating cylinder will be the best configuration with near to tenth fold improvement in lift generation 2016-01 Thesis NonPeerReviewed text en http://psasir.upm.edu.my/id/eprint/70469/1/FK%202016%2083%20IR.pdf Cheong, Xiang Hou (2016) Effects of upstream square blockage on lift behaviour of a rotating cylinder. Masters thesis, Universiti Putra Malaysia. Cylinders - Aerodynamicssystems Cylinders - Testing Wind tunnel testing |
| spellingShingle | Cylinders - Aerodynamicssystems Cylinders - Testing Wind tunnel testing Cheong, Xiang Hou Effects of upstream square blockage on lift behaviour of a rotating cylinder |
| title | Effects of upstream square blockage on lift behaviour of a rotating cylinder |
| title_full | Effects of upstream square blockage on lift behaviour of a rotating cylinder |
| title_fullStr | Effects of upstream square blockage on lift behaviour of a rotating cylinder |
| title_full_unstemmed | Effects of upstream square blockage on lift behaviour of a rotating cylinder |
| title_short | Effects of upstream square blockage on lift behaviour of a rotating cylinder |
| title_sort | effects of upstream square blockage on lift behaviour of a rotating cylinder |
| topic | Cylinders - Aerodynamicssystems Cylinders - Testing Wind tunnel testing |
| url | http://psasir.upm.edu.my/id/eprint/70469/ http://psasir.upm.edu.my/id/eprint/70469/1/FK%202016%2083%20IR.pdf |