Influence of Rounded Corners on Flow Interference Due to Square Cylinders Using Immersed Boundary Method
The influence of rounded corners on the aerodynamic forces and flow interference has been studied in detail for a uniform flow past two side-by-side arranged square cylinders. The Reynolds number (Re) based on the cylinder diameter (D) and free stream velocity (U∞) is 100. Numerical simulations are...
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| Veröffentlicht in: | Journal of fluids engineering 2012-09, Vol.134 (9), p.1-23 |
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| creator | Shyam Kumar, M. B. Vengadesan, S. |
| description | The influence of rounded corners on the aerodynamic forces and
flow interference has been studied in detail for a uniform flow past two
side-by-side arranged square cylinders. The Reynolds number (Re) based on the
cylinder diameter (D) and free stream velocity (U∞) is 100. Numerical
simulations are carried out for seven different transverse gap ratios (T/D),
each with a minimum and maximum corner radius. An inbuilt finite difference code
with staggered arrangement of flow variables is used to discretize the governing
equations. The concept of immersed boundary method (IBM) is employed to simulate
flow around rounded corners using the regular Cartesian grids. The computational
code was validated for flow past an isolated circular cylinder, square cylinder,
and two equal sized circular cylinders and the results were found to be in very
good agreement with available literatures. In the present study, results in
terms of the mean and rms values of lift and drag coefficients, Strouhal number,
phase diagrams, and contours of streamlines and vorticity are presented. As the
corner radius is increased, a reduction in the drag force is observed. There
exists a significant effect of gap ratio and corner radius on the phase angle of
lift and drag coefficients. Three different flow patterns, namely the single
bluff body flow, biased gapside flow, and two independent bluff body flows, were
observed from this study. |
| doi_str_mv | 10.1115/1.4007015 |
| format | Article |
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flow interference has been studied in detail for a uniform flow past two
side-by-side arranged square cylinders. The Reynolds number (Re) based on the
cylinder diameter (D) and free stream velocity (U∞) is 100. Numerical
simulations are carried out for seven different transverse gap ratios (T/D),
each with a minimum and maximum corner radius. An inbuilt finite difference code
with staggered arrangement of flow variables is used to discretize the governing
equations. The concept of immersed boundary method (IBM) is employed to simulate
flow around rounded corners using the regular Cartesian grids. The computational
code was validated for flow past an isolated circular cylinder, square cylinder,
and two equal sized circular cylinders and the results were found to be in very
good agreement with available literatures. In the present study, results in
terms of the mean and rms values of lift and drag coefficients, Strouhal number,
phase diagrams, and contours of streamlines and vorticity are presented. As the
corner radius is increased, a reduction in the drag force is observed. There
exists a significant effect of gap ratio and corner radius on the phase angle of
lift and drag coefficients. Three different flow patterns, namely the single
bluff body flow, biased gapside flow, and two independent bluff body flows, were
observed from this study.</description><identifier>ISSN: 0098-2202</identifier><identifier>EISSN: 1528-901X</identifier><identifier>DOI: 10.1115/1.4007015</identifier><identifier>CODEN: JFEGA4</identifier><language>eng</language><publisher>New York, NY: ASME</publisher><subject>Bluff bodies ; Boundaries ; Computer simulation ; Corners ; Cylinders ; Exact sciences and technology ; Fluid dynamics ; Fluid flow ; Fundamental areas of phenomenology (including applications) ; Fundamental Issues and Canonical Flows ; Mathematical analysis ; Mathematical models ; Physics ; Rotational flow and vorticity ; Separated flows</subject><ispartof>Journal of fluids engineering, 2012-09, Vol.134 (9), p.1-23</ispartof><rights>2015 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a345t-d76c37433a0535358f995e22bb58efe9023e59341f967cd262aef65d6f2c64923</citedby><cites>FETCH-LOGICAL-a345t-d76c37433a0535358f995e22bb58efe9023e59341f967cd262aef65d6f2c64923</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27923,27924,38519</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=26346359$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Shyam Kumar, M. B.</creatorcontrib><creatorcontrib>Vengadesan, S.</creatorcontrib><title>Influence of Rounded Corners on Flow Interference Due to Square Cylinders Using Immersed Boundary Method</title><title>Journal of fluids engineering</title><addtitle>J. Fluids Eng</addtitle><description>The influence of rounded corners on the aerodynamic forces and
flow interference has been studied in detail for a uniform flow past two
side-by-side arranged square cylinders. The Reynolds number (Re) based on the
cylinder diameter (D) and free stream velocity (U∞) is 100. Numerical
simulations are carried out for seven different transverse gap ratios (T/D),
each with a minimum and maximum corner radius. An inbuilt finite difference code
with staggered arrangement of flow variables is used to discretize the governing
equations. The concept of immersed boundary method (IBM) is employed to simulate
flow around rounded corners using the regular Cartesian grids. The computational
code was validated for flow past an isolated circular cylinder, square cylinder,
and two equal sized circular cylinders and the results were found to be in very
good agreement with available literatures. In the present study, results in
terms of the mean and rms values of lift and drag coefficients, Strouhal number,
phase diagrams, and contours of streamlines and vorticity are presented. As the
corner radius is increased, a reduction in the drag force is observed. There
exists a significant effect of gap ratio and corner radius on the phase angle of
lift and drag coefficients. Three different flow patterns, namely the single
bluff body flow, biased gapside flow, and two independent bluff body flows, were
observed from this study.</description><subject>Bluff bodies</subject><subject>Boundaries</subject><subject>Computer simulation</subject><subject>Corners</subject><subject>Cylinders</subject><subject>Exact sciences and technology</subject><subject>Fluid dynamics</subject><subject>Fluid flow</subject><subject>Fundamental areas of phenomenology (including applications)</subject><subject>Fundamental Issues and Canonical Flows</subject><subject>Mathematical analysis</subject><subject>Mathematical models</subject><subject>Physics</subject><subject>Rotational flow and vorticity</subject><subject>Separated flows</subject><issn>0098-2202</issn><issn>1528-901X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><recordid>eNqFkE1LxDAQhoMouK4ePHvJRdBDNd9tjrq6uqAIfoC3ENuJVtpEkxbx35t1F68yh2HgeR-YF6F9Sk4opfKUnghCSkLlBppQyapCE_q8iSaE6KpgjLBttJPSOyGUc1FN0NvCu24EXwMODt-H0TfQ4FmIHmLCweN5F77wwg8QHcRf7mIEPAT88DnaCHj23bU5k-Gn1PpXvOj7fGTH-dJl4ze-heEtNLtoy9kuwd56T9HT_PJxdl3c3F0tZmc3heVCDkVTqpqXgnNLJM9TOa0lMPbyIitwoAnjIDUX1GlV1g1TzIJTslGO1UpoxqfoaOX9iOFzhDSYvk01dJ31EMZkaEl0qQVR4n9UMqKl0tUSPV6hdQwpRXDmI7Z9_s5QYpbFG2rWxWf2cK21qbadi9bXbfoLMMWF4vmHKTpYcTb1YN7DGH0uxoiypJzxHxN_ick</recordid><startdate>20120901</startdate><enddate>20120901</enddate><creator>Shyam Kumar, M. B.</creator><creator>Vengadesan, S.</creator><general>ASME</general><general>American Society of Mechanical Engineers</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QH</scope><scope>7UA</scope><scope>C1K</scope><scope>F1W</scope><scope>H96</scope><scope>L.G</scope><scope>7TB</scope><scope>7U5</scope><scope>8FD</scope><scope>F28</scope><scope>FR3</scope><scope>H8D</scope><scope>KR7</scope><scope>L7M</scope></search><sort><creationdate>20120901</creationdate><title>Influence of Rounded Corners on Flow Interference Due to Square Cylinders Using Immersed Boundary Method</title><author>Shyam Kumar, M. B. ; Vengadesan, S.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a345t-d76c37433a0535358f995e22bb58efe9023e59341f967cd262aef65d6f2c64923</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Bluff bodies</topic><topic>Boundaries</topic><topic>Computer simulation</topic><topic>Corners</topic><topic>Cylinders</topic><topic>Exact sciences and technology</topic><topic>Fluid dynamics</topic><topic>Fluid flow</topic><topic>Fundamental areas of phenomenology (including applications)</topic><topic>Fundamental Issues and Canonical Flows</topic><topic>Mathematical analysis</topic><topic>Mathematical models</topic><topic>Physics</topic><topic>Rotational flow and vorticity</topic><topic>Separated flows</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Shyam Kumar, M. B.</creatorcontrib><creatorcontrib>Vengadesan, S.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Aqualine</collection><collection>Water Resources Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of fluids engineering</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Shyam Kumar, M. B.</au><au>Vengadesan, S.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Influence of Rounded Corners on Flow Interference Due to Square Cylinders Using Immersed Boundary Method</atitle><jtitle>Journal of fluids engineering</jtitle><stitle>J. Fluids Eng</stitle><date>2012-09-01</date><risdate>2012</risdate><volume>134</volume><issue>9</issue><spage>1</spage><epage>23</epage><pages>1-23</pages><issn>0098-2202</issn><eissn>1528-901X</eissn><coden>JFEGA4</coden><abstract>The influence of rounded corners on the aerodynamic forces and
flow interference has been studied in detail for a uniform flow past two
side-by-side arranged square cylinders. The Reynolds number (Re) based on the
cylinder diameter (D) and free stream velocity (U∞) is 100. Numerical
simulations are carried out for seven different transverse gap ratios (T/D),
each with a minimum and maximum corner radius. An inbuilt finite difference code
with staggered arrangement of flow variables is used to discretize the governing
equations. The concept of immersed boundary method (IBM) is employed to simulate
flow around rounded corners using the regular Cartesian grids. The computational
code was validated for flow past an isolated circular cylinder, square cylinder,
and two equal sized circular cylinders and the results were found to be in very
good agreement with available literatures. In the present study, results in
terms of the mean and rms values of lift and drag coefficients, Strouhal number,
phase diagrams, and contours of streamlines and vorticity are presented. As the
corner radius is increased, a reduction in the drag force is observed. There
exists a significant effect of gap ratio and corner radius on the phase angle of
lift and drag coefficients. Three different flow patterns, namely the single
bluff body flow, biased gapside flow, and two independent bluff body flows, were
observed from this study.</abstract><cop>New York, NY</cop><pub>ASME</pub><doi>10.1115/1.4007015</doi><tpages>23</tpages></addata></record> |
| fulltext | fulltext |
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| ispartof | Journal of fluids engineering, 2012-09, Vol.134 (9), p.1-23 |
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| language | eng |
| recordid | cdi_proquest_miscellaneous_1709794064 |
| source | ASME Transactions Journals (Current); Alma/SFX Local Collection |
| subjects | Bluff bodies Boundaries Computer simulation Corners Cylinders Exact sciences and technology Fluid dynamics Fluid flow Fundamental areas of phenomenology (including applications) Fundamental Issues and Canonical Flows Mathematical analysis Mathematical models Physics Rotational flow and vorticity Separated flows |
| title | Influence of Rounded Corners on Flow Interference Due to Square Cylinders Using Immersed Boundary Method |
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