Journal article 391 views 87 downloads
A thorough experimental investigation on airfoil turbulence interaction noise
Physics of Fluids, Volume: 35, Issue: 3, Start page: 035123
Swansea University Author:
Alper Celik
-
PDF | Version of Record
© 2023 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license
Download (10.7MB)
DOI (Published version): 10.1063/5.0142704
Abstract
This paper on airfoil turbulence interaction noise reveals the nature of the relation between the distortion type of turbulent structures and radiated far-field noise. The turbulence interaction phenomenon is explored through comprehensive simultaneous hot-wire, surface pressure, and far-field noise...
Published in: | Physics of Fluids |
---|---|
ISSN: | 1070-6631 1089-7666 |
Published: |
AIP Publishing
2023
|
Online Access: |
Check full text
|
URI: | https://cronfa.swan.ac.uk/Record/cronfa62786 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
first_indexed |
2023-03-17T11:39:29Z |
---|---|
last_indexed |
2023-04-04T03:25:47Z |
id |
cronfa62786 |
recordtype |
SURis |
fullrecord |
<?xml version="1.0" encoding="utf-8"?><rfc1807 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"><bib-version>v2</bib-version><id>62786</id><entry>2023-03-04</entry><title>A thorough experimental investigation on airfoil turbulence interaction noise</title><swanseaauthors><author><sid>3cb1f558a4b194101105e9c1e8d59cbf</sid><ORCID>0000-0002-2492-4625</ORCID><firstname>Alper</firstname><surname>Celik</surname><name>Alper Celik</name><active>true</active><ethesisStudent>false</ethesisStudent></author></swanseaauthors><date>2023-03-04</date><deptcode>AERO</deptcode><abstract>This paper on airfoil turbulence interaction noise reveals the nature of the relation between the distortion type of turbulent structures and radiated far-field noise. The turbulence interaction phenomenon is explored through comprehensive simultaneous hot-wire, surface pressure, and far-field noise measurements. Two grid turbulence cases are utilized to examine the effect of the coherent structure's length scale compared to the airfoil's leading-edge radius. The results show that the turbulent structures with a size comparable to the leading-edge radius disperse into smaller three-dimensional structures, losing their spatial coherence in the vicinity of the stagnation point. In contrast, the structures with larger integral length scales distort into highly coherent two-dimensional structures, yielding an increase in the surface pressure fluctuation energy spectra and the chordwise extent of the affected area by the interaction phenomenon, which is found to be responsible for the increased levels of far-field noise. The turbulence characteristics of the flow far upstream of the stagnation point determine the unsteady loading behavior at the stagnation point yet have little influence on the unsteady loading of the full airfoil chord. The stagnation point velocity fluctuations manifest a strong link to the remainder of the airfoil chord, as well as the near-field hydrodynamic to far-field acoustic signal coherence, while demonstrating no communication with the surface pressure fluctuations at the stagnation point.</abstract><type>Journal Article</type><journal>Physics of Fluids</journal><volume>35</volume><journalNumber>3</journalNumber><paginationStart>035123</paginationStart><paginationEnd/><publisher>AIP Publishing</publisher><placeOfPublication/><isbnPrint/><isbnElectronic/><issnPrint>1070-6631</issnPrint><issnElectronic>1089-7666</issnElectronic><keywords/><publishedDay>1</publishedDay><publishedMonth>3</publishedMonth><publishedYear>2023</publishedYear><publishedDate>2023-03-01</publishedDate><doi>10.1063/5.0142704</doi><url>http://dx.doi.org/10.1063/5.0142704</url><notes/><college>COLLEGE NANME</college><department>Aerospace Engineering</department><CollegeCode>COLLEGE CODE</CollegeCode><DepartmentCode>AERO</DepartmentCode><institution>Swansea University</institution><apcterm/><funders>Embraer S.A. and an Engineering and Physical Sciences Research Council doctoral training partnership (EPSRC DTP).
EPSRC via Grant No. EP/ S013024/1.</funders><projectreference/><lastEdited>2023-04-20T16:17:59.6265582</lastEdited><Created>2023-03-04T11:53:21.7015483</Created><path><level id="1">Faculty of Science and Engineering</level><level id="2">School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Aerospace Engineering</level></path><authors><author><firstname>L.</firstname><surname>Bowen</surname><orcid>0000-0001-7513-428x</orcid><order>1</order></author><author><firstname>Alper</firstname><surname>Celik</surname><orcid>0000-0002-2492-4625</orcid><order>2</order></author><author><firstname>M.</firstname><surname>Azarpeyvand</surname><orcid>0000-0001-7826-7635</orcid><order>3</order></author></authors><documents><document><filename>62786__26879__1f4f3eb5f0d848efa4ad1115b29f6709.pdf</filename><originalFilename>62786.pdf</originalFilename><uploaded>2023-03-17T11:39:27.8456621</uploaded><type>Output</type><contentLength>11219060</contentLength><contentType>application/pdf</contentType><version>Version of Record</version><cronfaStatus>true</cronfaStatus><documentNotes>© 2023 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license</documentNotes><copyrightCorrect>true</copyrightCorrect><language>eng</language><licence>http://creativecommons.org/licenses/by/4.0/</licence></document></documents><OutputDurs/></rfc1807> |
spelling |
v2 62786 2023-03-04 A thorough experimental investigation on airfoil turbulence interaction noise 3cb1f558a4b194101105e9c1e8d59cbf 0000-0002-2492-4625 Alper Celik Alper Celik true false 2023-03-04 AERO This paper on airfoil turbulence interaction noise reveals the nature of the relation between the distortion type of turbulent structures and radiated far-field noise. The turbulence interaction phenomenon is explored through comprehensive simultaneous hot-wire, surface pressure, and far-field noise measurements. Two grid turbulence cases are utilized to examine the effect of the coherent structure's length scale compared to the airfoil's leading-edge radius. The results show that the turbulent structures with a size comparable to the leading-edge radius disperse into smaller three-dimensional structures, losing their spatial coherence in the vicinity of the stagnation point. In contrast, the structures with larger integral length scales distort into highly coherent two-dimensional structures, yielding an increase in the surface pressure fluctuation energy spectra and the chordwise extent of the affected area by the interaction phenomenon, which is found to be responsible for the increased levels of far-field noise. The turbulence characteristics of the flow far upstream of the stagnation point determine the unsteady loading behavior at the stagnation point yet have little influence on the unsteady loading of the full airfoil chord. The stagnation point velocity fluctuations manifest a strong link to the remainder of the airfoil chord, as well as the near-field hydrodynamic to far-field acoustic signal coherence, while demonstrating no communication with the surface pressure fluctuations at the stagnation point. Journal Article Physics of Fluids 35 3 035123 AIP Publishing 1070-6631 1089-7666 1 3 2023 2023-03-01 10.1063/5.0142704 http://dx.doi.org/10.1063/5.0142704 COLLEGE NANME Aerospace Engineering COLLEGE CODE AERO Swansea University Embraer S.A. and an Engineering and Physical Sciences Research Council doctoral training partnership (EPSRC DTP). EPSRC via Grant No. EP/ S013024/1. 2023-04-20T16:17:59.6265582 2023-03-04T11:53:21.7015483 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Aerospace Engineering L. Bowen 0000-0001-7513-428x 1 Alper Celik 0000-0002-2492-4625 2 M. Azarpeyvand 0000-0001-7826-7635 3 62786__26879__1f4f3eb5f0d848efa4ad1115b29f6709.pdf 62786.pdf 2023-03-17T11:39:27.8456621 Output 11219060 application/pdf Version of Record true © 2023 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license true eng http://creativecommons.org/licenses/by/4.0/ |
title |
A thorough experimental investigation on airfoil turbulence interaction noise |
spellingShingle |
A thorough experimental investigation on airfoil turbulence interaction noise Alper Celik |
title_short |
A thorough experimental investigation on airfoil turbulence interaction noise |
title_full |
A thorough experimental investigation on airfoil turbulence interaction noise |
title_fullStr |
A thorough experimental investigation on airfoil turbulence interaction noise |
title_full_unstemmed |
A thorough experimental investigation on airfoil turbulence interaction noise |
title_sort |
A thorough experimental investigation on airfoil turbulence interaction noise |
author_id_str_mv |
3cb1f558a4b194101105e9c1e8d59cbf |
author_id_fullname_str_mv |
3cb1f558a4b194101105e9c1e8d59cbf_***_Alper Celik |
author |
Alper Celik |
author2 |
L. Bowen Alper Celik M. Azarpeyvand |
format |
Journal article |
container_title |
Physics of Fluids |
container_volume |
35 |
container_issue |
3 |
container_start_page |
035123 |
publishDate |
2023 |
institution |
Swansea University |
issn |
1070-6631 1089-7666 |
doi_str_mv |
10.1063/5.0142704 |
publisher |
AIP Publishing |
college_str |
Faculty of Science and Engineering |
hierarchytype |
|
hierarchy_top_id |
facultyofscienceandengineering |
hierarchy_top_title |
Faculty of Science and Engineering |
hierarchy_parent_id |
facultyofscienceandengineering |
hierarchy_parent_title |
Faculty of Science and Engineering |
department_str |
School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Aerospace Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Aerospace Engineering |
url |
http://dx.doi.org/10.1063/5.0142704 |
document_store_str |
1 |
active_str |
0 |
description |
This paper on airfoil turbulence interaction noise reveals the nature of the relation between the distortion type of turbulent structures and radiated far-field noise. The turbulence interaction phenomenon is explored through comprehensive simultaneous hot-wire, surface pressure, and far-field noise measurements. Two grid turbulence cases are utilized to examine the effect of the coherent structure's length scale compared to the airfoil's leading-edge radius. The results show that the turbulent structures with a size comparable to the leading-edge radius disperse into smaller three-dimensional structures, losing their spatial coherence in the vicinity of the stagnation point. In contrast, the structures with larger integral length scales distort into highly coherent two-dimensional structures, yielding an increase in the surface pressure fluctuation energy spectra and the chordwise extent of the affected area by the interaction phenomenon, which is found to be responsible for the increased levels of far-field noise. The turbulence characteristics of the flow far upstream of the stagnation point determine the unsteady loading behavior at the stagnation point yet have little influence on the unsteady loading of the full airfoil chord. The stagnation point velocity fluctuations manifest a strong link to the remainder of the airfoil chord, as well as the near-field hydrodynamic to far-field acoustic signal coherence, while demonstrating no communication with the surface pressure fluctuations at the stagnation point. |
published_date |
2023-03-01T16:17:57Z |
_version_ |
1763708898375630848 |
score |
11.021648 |