On numerical investigation of the nonmodal instability of the Poiseuille flow in an elliptic pipe
For the Poiseuille flow in a pipe of axially uniform elliptic cross-section the dependence of the maximum amplification of the average kinetic energy density of disturbances on the pipe aspect ratio is computed. It is shown, that for the considered values of streamwise wavenumber and the Reynolds nu...
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| creator | Klyushnev, N. V. Demyanko, K. V. |
| description | For the Poiseuille flow in a pipe of axially uniform elliptic cross-section the dependence of the maximum amplification of the average kinetic energy density of disturbances on the pipe aspect ratio is computed. It is shown, that for the considered values of streamwise wavenumber and the Reynolds number the maximum amplification decreases non-monotonically as the pipe aspect ratio increases under scaling providing the same flow rates at the same Reynolds numbers. It is also shown, that the optimal disturbances displaying the maximum energy growth are streamwise vortices. |
| doi_str_mv | 10.1063/5.0133111 |
| format | Conference Proceeding |
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V. ; Demyanko, K. V.</creator><contributor>Fedorova, Natalya ; Fomin, Vasily ; Buzyurkin, Andrey</contributor><creatorcontrib>Klyushnev, N. V. ; Demyanko, K. V. ; Fedorova, Natalya ; Fomin, Vasily ; Buzyurkin, Andrey</creatorcontrib><description>For the Poiseuille flow in a pipe of axially uniform elliptic cross-section the dependence of the maximum amplification of the average kinetic energy density of disturbances on the pipe aspect ratio is computed. It is shown, that for the considered values of streamwise wavenumber and the Reynolds number the maximum amplification decreases non-monotonically as the pipe aspect ratio increases under scaling providing the same flow rates at the same Reynolds numbers. It is also shown, that the optimal disturbances displaying the maximum energy growth are streamwise vortices.</description><identifier>ISSN: 0094-243X</identifier><identifier>EISSN: 1551-7616</identifier><identifier>DOI: 10.1063/5.0133111</identifier><identifier>CODEN: APCPCS</identifier><language>eng</language><publisher>Melville: American Institute of Physics</publisher><subject>Amplification ; Aspect ratio ; Disturbances ; Flow stability ; Flow velocity ; Fluid flow ; Kinetic energy ; Laminar flow ; Pipes ; Reynolds number ; Wavelengths</subject><ispartof>AIP Conference Proceedings, 2023, Vol.2504 (1)</ispartof><rights>Author(s)</rights><rights>2023 Author(s). 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V.</creatorcontrib><title>On numerical investigation of the nonmodal instability of the Poiseuille flow in an elliptic pipe</title><title>AIP Conference Proceedings</title><description>For the Poiseuille flow in a pipe of axially uniform elliptic cross-section the dependence of the maximum amplification of the average kinetic energy density of disturbances on the pipe aspect ratio is computed. It is shown, that for the considered values of streamwise wavenumber and the Reynolds number the maximum amplification decreases non-monotonically as the pipe aspect ratio increases under scaling providing the same flow rates at the same Reynolds numbers. It is also shown, that the optimal disturbances displaying the maximum energy growth are streamwise vortices.</description><subject>Amplification</subject><subject>Aspect ratio</subject><subject>Disturbances</subject><subject>Flow stability</subject><subject>Flow velocity</subject><subject>Fluid flow</subject><subject>Kinetic energy</subject><subject>Laminar flow</subject><subject>Pipes</subject><subject>Reynolds number</subject><subject>Wavelengths</subject><issn>0094-243X</issn><issn>1551-7616</issn><fulltext>true</fulltext><rsrctype>conference_proceeding</rsrctype><creationdate>2023</creationdate><recordtype>conference_proceeding</recordtype><recordid>eNo1kD1PwzAYhC0EEqUw8A8ssSGl-I2T2BlRxZdUqQwd2CzbscGVa4fYAfXfE2iZbrhHd7pD6BrIAkhD7-oFAUoB4ATNoK6hYA00p2hGSFsVZUXfztFFSltCypYxPkNyHXAYd2ZwWnrswpdJ2b3L7GLA0eL8YXCIYRe7PzdlqZx3ef_vvUaXzOi8N9j6-D0hWAZsvHd9dhr3rjeX6MxKn8zVUedo8_iwWT4Xq_XTy_J-VeiScCi6VnNgBixXplYNq7TkhnVSNVVrTQ2kUxaYNaSlpVKKkU433FacQyXBWDpHN4fYfoif47RCbOM4hKlRlIwxoBVnfKJuD1TSLv-tFP3gdnLYCyDi90FRi-OD9AcMm2Qr</recordid><startdate>20230216</startdate><enddate>20230216</enddate><creator>Klyushnev, N. V.</creator><creator>Demyanko, K. V.</creator><general>American Institute of Physics</general><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope></search><sort><creationdate>20230216</creationdate><title>On numerical investigation of the nonmodal instability of the Poiseuille flow in an elliptic pipe</title><author>Klyushnev, N. V. ; Demyanko, K. V.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c2081-d9c817e1f8be5b674ca8e7dab649fe510dbf17fe0932bbb70dc68f48814a1ef3</frbrgroupid><rsrctype>conference_proceedings</rsrctype><prefilter>conference_proceedings</prefilter><language>eng</language><creationdate>2023</creationdate><topic>Amplification</topic><topic>Aspect ratio</topic><topic>Disturbances</topic><topic>Flow stability</topic><topic>Flow velocity</topic><topic>Fluid flow</topic><topic>Kinetic energy</topic><topic>Laminar flow</topic><topic>Pipes</topic><topic>Reynolds number</topic><topic>Wavelengths</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Klyushnev, N. V.</creatorcontrib><creatorcontrib>Demyanko, K. V.</creatorcontrib><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Klyushnev, N. V.</au><au>Demyanko, K. V.</au><au>Fedorova, Natalya</au><au>Fomin, Vasily</au><au>Buzyurkin, Andrey</au><format>book</format><genre>proceeding</genre><ristype>CONF</ristype><atitle>On numerical investigation of the nonmodal instability of the Poiseuille flow in an elliptic pipe</atitle><btitle>AIP Conference Proceedings</btitle><date>2023-02-16</date><risdate>2023</risdate><volume>2504</volume><issue>1</issue><issn>0094-243X</issn><eissn>1551-7616</eissn><coden>APCPCS</coden><abstract>For the Poiseuille flow in a pipe of axially uniform elliptic cross-section the dependence of the maximum amplification of the average kinetic energy density of disturbances on the pipe aspect ratio is computed. It is shown, that for the considered values of streamwise wavenumber and the Reynolds number the maximum amplification decreases non-monotonically as the pipe aspect ratio increases under scaling providing the same flow rates at the same Reynolds numbers. It is also shown, that the optimal disturbances displaying the maximum energy growth are streamwise vortices.</abstract><cop>Melville</cop><pub>American Institute of Physics</pub><doi>10.1063/5.0133111</doi><tpages>5</tpages><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0094-243X |
| ispartof | AIP Conference Proceedings, 2023, Vol.2504 (1) |
| issn | 0094-243X 1551-7616 |
| language | eng |
| recordid | cdi_scitation_primary_10_1063_5_0133111 |
| source | AIP Journals |
| subjects | Amplification Aspect ratio Disturbances Flow stability Flow velocity Fluid flow Kinetic energy Laminar flow Pipes Reynolds number Wavelengths |
| title | On numerical investigation of the nonmodal instability of the Poiseuille flow in an elliptic pipe |
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