Application of pressure-sensitive paint to low-speed flow around a U-bend of strong curvature
Pressure measurements are traditionally made using pressure taps connected to a transducer. These measurements are labor-intensive, expensive and only yield discrete values. Pressure-sensitive paint is a method of optically measuring the pressure across an entire model. Originally designed for use i...
| Main Authors: | , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2013
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| _version_ | 1797077416553742336 |
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| author | Quinn, M Gongora-Orozco, N Kontis, K Ireland, P |
| author_facet | Quinn, M Gongora-Orozco, N Kontis, K Ireland, P |
| author_sort | Quinn, M |
| collection | OXFORD |
| description | Pressure measurements are traditionally made using pressure taps connected to a transducer. These measurements are labor-intensive, expensive and only yield discrete values. Pressure-sensitive paint is a method of optically measuring the pressure across an entire model. Originally designed for use in transonic flow, pressure-sensitive paints are absolute pressure sensors. Therefore, application of pressure-sensitive paint to low-speed flow represents a significant challenge to researchers. This study investigates the surface pressure distribution around a U-bend of sharp curvature with three different inlet velocities: 29.7, 21.5 and 12.0ms-1. The absolute accuracy of the paint has been measured and compared with previously published literature and empirical relations. The paint was excited using two LED lamps, and full-field pressure maps have been gathered using a CCD camera. The absolute accuracy of the pressure measurements is ultimately limited by CCD shot noise, but is more commonly limited by the temperature-induced error and the microheterogeneity of the painted surface. © 2013 Elsevier Inc. |
| first_indexed | 2024-03-07T00:17:40Z |
| format | Journal article |
| id | oxford-uuid:7b69cd00-2377-4d97-8640-dacc8a67ff0e |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T00:17:40Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | oxford-uuid:7b69cd00-2377-4d97-8640-dacc8a67ff0e2022-03-26T20:50:29ZApplication of pressure-sensitive paint to low-speed flow around a U-bend of strong curvatureJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:7b69cd00-2377-4d97-8640-dacc8a67ff0eEnglishSymplectic Elements at Oxford2013Quinn, MGongora-Orozco, NKontis, KIreland, PPressure measurements are traditionally made using pressure taps connected to a transducer. These measurements are labor-intensive, expensive and only yield discrete values. Pressure-sensitive paint is a method of optically measuring the pressure across an entire model. Originally designed for use in transonic flow, pressure-sensitive paints are absolute pressure sensors. Therefore, application of pressure-sensitive paint to low-speed flow represents a significant challenge to researchers. This study investigates the surface pressure distribution around a U-bend of sharp curvature with three different inlet velocities: 29.7, 21.5 and 12.0ms-1. The absolute accuracy of the paint has been measured and compared with previously published literature and empirical relations. The paint was excited using two LED lamps, and full-field pressure maps have been gathered using a CCD camera. The absolute accuracy of the pressure measurements is ultimately limited by CCD shot noise, but is more commonly limited by the temperature-induced error and the microheterogeneity of the painted surface. © 2013 Elsevier Inc. |
| spellingShingle | Quinn, M Gongora-Orozco, N Kontis, K Ireland, P Application of pressure-sensitive paint to low-speed flow around a U-bend of strong curvature |
| title | Application of pressure-sensitive paint to low-speed flow around a U-bend of strong curvature |
| title_full | Application of pressure-sensitive paint to low-speed flow around a U-bend of strong curvature |
| title_fullStr | Application of pressure-sensitive paint to low-speed flow around a U-bend of strong curvature |
| title_full_unstemmed | Application of pressure-sensitive paint to low-speed flow around a U-bend of strong curvature |
| title_short | Application of pressure-sensitive paint to low-speed flow around a U-bend of strong curvature |
| title_sort | application of pressure sensitive paint to low speed flow around a u bend of strong curvature |
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