AI SearchActive control of aerodynamic flow around structures by using plasma actuators (Record no. 1452)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 04684nas a2200397 a 4500 |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20260817161457.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 220210 2020 th uu m rtt 0| a1eng |
| 035 ## - SYSTEM CONTROL NUMBER | |
| System control number | .b12378975 |
| 099 #9 - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Classification number | AIT Thesis no.ST-20-03 |
| 100 0# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Phasuthorn Phiwphong |
| 245 10 - TITLE STATEMENT | |
| Title | Active control of aerodynamic flow around structures by using plasma actuators |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Place of publication, distribution, etc. | Pathum Thani, Thailand : |
| Name of publisher, distributor, etc. | Asian Institute of Technology, |
| Date of publication, distribution, etc. | 2020 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 126 leaves : |
| Other physical details | ill. |
| 490 1# - SERIES STATEMENT | |
| Series statement | Thesis ; |
| Volume/sequential designation | no. ST-20-03 |
| 500 ## - GENERAL NOTE | |
| General note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Structural Engineering, School of Engineering and Technology |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | Thesis (M. Eng.) - Asian Institute of Technology, 2020 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | The main goal of this research is to study the performance of plasma actuators on the aerodynamic force. The circuits which used to drive the plasma actuators were developed at the Nuclear Engineering Department of Chulalongkorn University, which consists of high voltage circuits at a low-frequency range and high voltage circuits at a high-frequency range. The specimen was studied under two basic shapes configuration models which include cylinder and square that the measurement aerodynamic force techniques were included the high-frequency force balance (HFFB) technique and the high-frequency pressure integration (HFPI). This thesis was conducted on free-stream flow conditions at varying wind speeds inside the TU-AIT wind tunnel. From the result of plasma actuators by using high voltage circuits at low-frequency range, for a cylinder model, it was found that the plasma actuators are efficient in reducing the drag force at 1.7 m/s (low wind speed) up to 27%, while the square model can reduce the drag force by 9%. Also, the plasma actuators can effectively streamline in the across-wind flow which can reduce the formation of vortex shedding, as shown by the PSD peak. For cylinder model, the PSD peak is reduced up to 50% at 1.7m/s (low wind speed). at higher wind speed, the plasma actuators are still to reduce the PSD peak by 17-20%. For square model, the PSD peak is reduced up to 27% at 1.7m/s (low wind speed). From the results, the plasma actuators which are driven by high-voltage at low frequency range circuits be effective in the area of low wind speed. The plasma actuators which are driven by high-voltage circuits at the high-frequency range (HF circuit) are better effective in reducing drag force. For cylinder model has the most efficiency at 1.7 m/s (low wind speed) by up to 52%. At higher wind speed, the plasma actuators are also effective which reduces the drag coefficient by 32%, 16% and 13% at wind speed 3.5m/s, 4.9 m/s and 7.1 m/s respectively. For the square model, the plasma actuators did not perform well to reduce the drag force. In addition, the plasma actuators which driven by the HF circuit help to reduce the formation of the Vortex shedding better than the LF circuit. For the cylinder model, the maximum drop is up to 92% at a wind speed of 1.7 m/s. Also, at higher wind speeds, the PSD Peak reduces up to 36-43%. For square model, the peak of PSD reduces by 54% at 1.7m/s (low wind speed). At higher wind speed the plasma actuators are still to reduce the PSD peak by 14-17% From the testing results, the circuit which is driven by high voltage circuit at the high-frequency range (HF circuit) help to control the flow by improving the airflow around the model that works best in reducing the mean drag force. Moreover, it also helps to reduce the formation of Vortex shedding, which causes structural vibrations. |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Wind tunnels |
| General subdivision | Flow visualization |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | plasma actuators |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Pennung Warnitchai, |
| Relator term | Chairperson |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Punchet Thammarak, |
| Relator term | Examination Committee |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Raktipong Sahamitmongkol, |
| Relator term | Examination Committee |
| 710 2# - ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Royal Thai Government Fellowship, |
| Relator term | Scholarship Donor |
| 810 2# - SERIES ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Asian Institute of Technology. |
| Title of a work | Thesis ; |
| Volume/sequential designation | no. ST-20-03 |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Materials specified | Full-Text |
| Uniform Resource Identifier | <a href="http://203.159.5.9/ait-thesis/detail.php?q=B15720">http://203.159.5.9/ait-thesis/detail.php?q=B15720</a> |
| 907 ## - LOCAL DATA ELEMENT G, LDG (RLIN) | |
| a | .b12378975 |
| b | mnait |
| c | m |
| 902 ## - LOCAL DATA ELEMENT B, LDB (RLIN) | |
| a | 240419 |
| 998 ## - LOCAL CONTROL INFORMATION (RLIN) | |
| Operator's initials, OID (RLIN) | 0 |
| Cataloger's initials, CIN (RLIN) | 220210 |
| First date, FD (RLIN) | m |
| -- | a |
| -- | m |
| -- | 0 |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnarc |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnarc |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 67-Electronic Resource |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 40-Archives |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : - |
| CREATED | CREATED : 2022-10-02 |
| RECORD Id | RECORD # : i13364595 |
| LPATRON | LPATRON : 0 |
| LCHKIN | LCHKIN : - |
| RENEWALS | # RENEWALS : 0 |
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| -- | TOT CHKOUT : 0 |
| -- | TOT RENEW : 0 |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30020220004876 |
| CREATED | CREATED : 2023-10-01 |
| RECORD Id | RECORD # : i13423691 |
| LPATRON | LPATRON : 0 |
| LCHKIN | LCHKIN : - |
| RENEWALS | # RENEWALS : 0 |
| -- | # OVERDUE : 0 |
| -- | IUSE3 : 0 |
| -- | TOT CHKOUT : 0 |
| -- | TOT RENEW : 0 |
| Withdrawn status | Lost status | Damaged status | Not for loan | Home library | Current library | Shelving location | Date acquired | Total checkouts | Full call number | Date last seen | Price effective from | Koha item type | Barcode | Copy number |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | Archives | 17/08/2026 | AIT Thesis no.ST-20-03 | 17/08/2026 | 17/08/2026 | 67-Electronic Resource | ||||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | Archives | 17/08/2026 | AIT Thesis no.ST-20-03 | 17/08/2026 | 17/08/2026 | 40-Archives | 30020220004876 | 1 |