Vortex Induced Vibration (VIV) Based Electro-mechanical Energy Harvesting System in Confined Space / (Record no. 607329)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 02988nam a22001577a 4500 |
| 082 ## - DEWEY DECIMAL CLASSIFICATION NUMBER | |
| Classification number | 621 |
| 100 ## - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Shahid, Hanzla |
| 245 ## - TITLE STATEMENT | |
| Title | Vortex Induced Vibration (VIV) Based Electro-mechanical Energy Harvesting System in Confined Space / |
| Statement of responsibility, etc. | Hanzla Shahid |
| 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 | 59p. |
| Other physical details | Soft Copy |
| Dimensions | 30cm |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | The increasing global demand for sustainable and efficient energy sources due to<br/>environmental concerns is pressing. Energy harvesting from fluid flows provides a promising<br/>option for renewable energy generation, and the development of self-sustaining devices is crucial<br/>for practical implementation. In this regard, the need to study the impact of varying the size of<br/>bound region on energy harvesting is necessary, which is significant for the optimal design of<br/>portable devices due to the establishment of boundary layer. Therefore, this experimental study<br/>aims to investigate the effect of changing the distance between wall boundaries on the performance<br/>of a piezoelectric-based energy harvester in generating electrical energy from fluid flow. A series<br/>of experiments were conducted to analyze the dynamical behavior of a piezoelectric flag due to<br/>gap variation and the impact of boundary layer thickness (δ) on its behavior. The setup involved<br/>placing inverted C-shaped (120-degree cut) and circular cylinders in a uniform fluid flow, utilizing<br/>the undulating motion of the piezo flag in the downstream vortices to harvest electrical energy.<br/>The distinct flapping modes were observed in the experimental results which can create varying<br/>degrees of coupling in the wake flow. The dynamic behavior of the piezoelectric flag was observed<br/>to be influenced by both the gap between cylinder and flag (Dx) and Cylinder to wall (Dy), leading<br/>to output power fluctuation. For each 𝑥<br/>∗ value, the power output levels were analyzed by<br/>experimentally varying Dx values from 1.0 to 5.0 for different values of Dy in terms of δ to find<br/>the optimal configuration. The cylindrical arrangement of both bluff bodies, characterized by Dy<br/>= 34.05δ and 𝑥<br/>∗ = 310 mm, exhibits a persistent pattern of peak power output within the range of<br/>2.0 ≤ Dx ≤ 3.0 due to continuous flapping and significant amplitudes. The inverted C-shaped<br/>cylinder (120o<br/>cut) shows a maximum gain of 83% in power output compared to the circular<br/>cylinder. Furthermore, it is demonstrated that certain spanwise gaps lead to low energy production<br/>due to boundary viscous effects and poor coupling of wake flow. This study provides valuable<br/>insights into the development of more efficient and optimal sustainable devices for remote<br/>practical applications and renewable energy sources, reducing dependence on conventional<br/>sources. |
| 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. Emad Uddin |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | <a href="http://10.250.8.41:8080/xmlui/handle/123456789/34651">http://10.250.8.41:8080/xmlui/handle/123456789/34651</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 | 12/13/2023 | 621 | SMME-TH-874 | Thesis |