NUMERICAL INVESTIGATION OF VORTEXINDUCED VIBRATIONS (VIV) OF A ROTATING CYLINDER IN IN-LINE AND CROSS-FLOW DIRECTIONS SUBJECTED TO OSCILLATORY FLOW / (Record no. 607303)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 02493nam a22001697a 4500 |
| 003 - CONTROL NUMBER IDENTIFIER | |
| control field | NUST |
| 082 ## - DEWEY DECIMAL CLASSIFICATION NUMBER | |
| Classification number | 621 |
| 100 ## - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Ur Rehman, Ubaid |
| 245 ## - TITLE STATEMENT | |
| Title | NUMERICAL INVESTIGATION OF VORTEXINDUCED VIBRATIONS (VIV) OF A ROTATING CYLINDER IN IN-LINE AND CROSS-FLOW DIRECTIONS SUBJECTED TO OSCILLATORY FLOW / |
| Statement of responsibility, etc. | Ubaid Ur Rehman |
| 264 ## - PRODUCTION, PUBLICATION, DISTRIBUTION, MANUFACTURE, AND COPYRIGHT NOTICE | |
| Place of production, publication, distribution, manufacture | Islamabad : |
| Name of producer, publisher, distributor, manufacturer | SMME- NUST; |
| Date of production, publication, distribution, manufacture, or copyright notice | 2023. |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 66p. ; |
| Other physical details | Soft Copy |
| Dimensions | 30cm. |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | This study aims to explore the phenomenon of Vortex-Induced Vibration (VIV) generated<br/>by cylinder undergoing rotation at different rotation rates (α = 0, 0.25, 0.5, 0.75, and 1) while<br/>being subjected to oscillatory flow in two dimensional numerical simulations. The simulations<br/>use two different Keulegan-Carpenter (KC) numbers KC = 5 and 10, at Reynolds number Re<br/>= 150. A widespread reduced velocities range. This research purpose is to explore the<br/>phenomenon of Vortex-Induced Vibration (VIV) generated by a cylinder undergoing rotation<br/>at different rotation rates ( α = 0, 0.25, 0.5, 0.75, and 1) while being subjected to oscillatory<br/>flow.<br/>The results demonstrate that vibration amplitude in inline and cross-flow directions is<br/>significantly influenced by the rotation provided to cylinder, as well as the KC number and Vr.<br/>However, it is observed that the cross-flow direction vibrations are more profoundly affected<br/>by the rotation. Case of the stationary cylinder (α = 0), the VIV amplitude in cross-flow<br/>direction almost diminishes once the critical value of reduced velocity is surpassed, specifically<br/>Vr = 6 for KC = 5 and Vr = 11 for KC = 10. On other hand, for rotating cylinders (α ≠ 0), the<br/>vibration amplitude reaches zero only at the critical value of reduced velocity. Beyond this<br/>point, it gradually increases and eventually stabilizes.<br/>The critical reduced velocity, which determines the point at which the vibration amplitude<br/>essentially becomes zero, depends on the cylinder's relative motion and is considered the<br/>critical reduced velocity when the effective KC number (KCeff) is very small and same trent<br/>also observed for effective reduced velocity (Vr eff) are small. It should be noted that at<br/>significantly higher reduced velocities, a non-vortex shedding regime occurs, indicating a<br/>distinct flow behavior. |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | MS Mechanical Engineering |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Supervisor : Dr. Adnan Munir |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | <a href="http://10.250.8.41:8080/xmlui/handle/123456789/35830">http://10.250.8.41:8080/xmlui/handle/123456789/35830</a> |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Source of classification or shelving scheme | |
| Koha item type | Thesis |
| Withdrawn status | Permanent Location | Current Location | Shelving location | Date acquired | Full call number | Barcode | Koha item type |
|---|---|---|---|---|---|---|---|
| School of Mechanical & Manufacturing Engineering (SMME) | School of Mechanical & Manufacturing Engineering (SMME) | E-Books | 12/11/2023 | 621 | SMME-TH-893 | Thesis |