Investigation of Wind-Loads Acting on Low-Aspect-Ratio Cylindrical Structures Based on a Wind Tunnel Test
The low-aspect-ratio cylindrical structures represented by oil tanks is a kind of wind sensitive structure, which is prone to buckling under wind-loads. A wind tunnel test was conducted to investigate the properties of wind-loads acting on smooth cylinders with an aspect ratio <i>AR</i>...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-06-01
|
| Series: | Applied Sciences |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-3417/12/12/5891 |
| _version_ | 1797490309081333760 |
|---|---|
| author | Zhen Han Bo Li Yuji Tian Meimei Xue Shuai Shao |
| author_facet | Zhen Han Bo Li Yuji Tian Meimei Xue Shuai Shao |
| author_sort | Zhen Han |
| collection | DOAJ |
| description | The low-aspect-ratio cylindrical structures represented by oil tanks is a kind of wind sensitive structure, which is prone to buckling under wind-loads. A wind tunnel test was conducted to investigate the properties of wind-loads acting on smooth cylinders with an aspect ratio <i>AR</i> = 0.323 and 0.875, respectively. Some parameters, such as Reynolds number (<i>Re</i>) and turbulence intensity, were taken into account. The results reveal that low-aspect-ratio cylinders have a <i>Re</i> effect, and the effect rises with <i>AR</i>. <i>AR</i> is the main factor affecting the value of the base pressure coefficient and positive pressure range, and the former increases with <i>AR,</i> while the latter decreases with <i>AR</i>. Moreover, due to the influence of the free end and turbulence, which may suppress vortex shedding, the power spectrum of the lift coefficient essentially shows broad spectral peaks with <i>Re</i> and turbulence. Increasing the incoming turbulence made the flow round cylinders at a higher <i>Re</i> state, that is, the supercritical regime is reached at a smaller <i>Re</i>. When turbulence is greater than 4.0%, turbulence and <i>Re</i> have little effect on the mean base force coefficient of low-aspect-ratio cylinders. |
| first_indexed | 2024-03-10T00:31:09Z |
| format | Article |
| id | doaj.art-09b21ed9c58949e084c988093583125f |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T00:31:09Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-09b21ed9c58949e084c988093583125f2023-11-23T15:24:07ZengMDPI AGApplied Sciences2076-34172022-06-011212589110.3390/app12125891Investigation of Wind-Loads Acting on Low-Aspect-Ratio Cylindrical Structures Based on a Wind Tunnel TestZhen Han0Bo Li1Yuji Tian2Meimei Xue3Shuai Shao4School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, ChinaSchool of Civil Engineering, Beijing Jiaotong University, Beijing 100044, ChinaSchool of Civil Engineering, Beijing Jiaotong University, Beijing 100044, ChinaSchool of Civil Engineering, Beijing Jiaotong University, Beijing 100044, ChinaChina Electric Power Research Institute, Beijing 100192, ChinaThe low-aspect-ratio cylindrical structures represented by oil tanks is a kind of wind sensitive structure, which is prone to buckling under wind-loads. A wind tunnel test was conducted to investigate the properties of wind-loads acting on smooth cylinders with an aspect ratio <i>AR</i> = 0.323 and 0.875, respectively. Some parameters, such as Reynolds number (<i>Re</i>) and turbulence intensity, were taken into account. The results reveal that low-aspect-ratio cylinders have a <i>Re</i> effect, and the effect rises with <i>AR</i>. <i>AR</i> is the main factor affecting the value of the base pressure coefficient and positive pressure range, and the former increases with <i>AR,</i> while the latter decreases with <i>AR</i>. Moreover, due to the influence of the free end and turbulence, which may suppress vortex shedding, the power spectrum of the lift coefficient essentially shows broad spectral peaks with <i>Re</i> and turbulence. Increasing the incoming turbulence made the flow round cylinders at a higher <i>Re</i> state, that is, the supercritical regime is reached at a smaller <i>Re</i>. When turbulence is greater than 4.0%, turbulence and <i>Re</i> have little effect on the mean base force coefficient of low-aspect-ratio cylinders.https://www.mdpi.com/2076-3417/12/12/5891wind tunnel testlow-aspect-ratio cylinderwind-loadReynolds number effectturbulence flowfree end effect |
| spellingShingle | Zhen Han Bo Li Yuji Tian Meimei Xue Shuai Shao Investigation of Wind-Loads Acting on Low-Aspect-Ratio Cylindrical Structures Based on a Wind Tunnel Test Applied Sciences wind tunnel test low-aspect-ratio cylinder wind-load Reynolds number effect turbulence flow free end effect |
| title | Investigation of Wind-Loads Acting on Low-Aspect-Ratio Cylindrical Structures Based on a Wind Tunnel Test |
| title_full | Investigation of Wind-Loads Acting on Low-Aspect-Ratio Cylindrical Structures Based on a Wind Tunnel Test |
| title_fullStr | Investigation of Wind-Loads Acting on Low-Aspect-Ratio Cylindrical Structures Based on a Wind Tunnel Test |
| title_full_unstemmed | Investigation of Wind-Loads Acting on Low-Aspect-Ratio Cylindrical Structures Based on a Wind Tunnel Test |
| title_short | Investigation of Wind-Loads Acting on Low-Aspect-Ratio Cylindrical Structures Based on a Wind Tunnel Test |
| title_sort | investigation of wind loads acting on low aspect ratio cylindrical structures based on a wind tunnel test |
| topic | wind tunnel test low-aspect-ratio cylinder wind-load Reynolds number effect turbulence flow free end effect |
| url | https://www.mdpi.com/2076-3417/12/12/5891 |
| work_keys_str_mv | AT zhenhan investigationofwindloadsactingonlowaspectratiocylindricalstructuresbasedonawindtunneltest AT boli investigationofwindloadsactingonlowaspectratiocylindricalstructuresbasedonawindtunneltest AT yujitian investigationofwindloadsactingonlowaspectratiocylindricalstructuresbasedonawindtunneltest AT meimeixue investigationofwindloadsactingonlowaspectratiocylindricalstructuresbasedonawindtunneltest AT shuaishao investigationofwindloadsactingonlowaspectratiocylindricalstructuresbasedonawindtunneltest |