An approach to wall modeling in large-eddy simulations
Channel flow with friction Reynolds number Re τ as high as 80 000 is treated by large-eddy simulation at a moderate cost, using the subgrid-scale model designed for detached-eddy simulations. It includes wall modeling, and was not adjusted for this flow. The grid count scales with the logarithm of t...
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| Veröffentlicht in: | Physics of fluids (1994) 2000-07, Vol.12 (7), p.1629-1632 |
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| container_issue | 7 |
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| container_title | Physics of fluids (1994) |
| container_volume | 12 |
| creator | Nikitin, N. V. Nicoud, F. Wasistho, B. Squires, K. D. Spalart, P. R. |
| description | Channel flow with friction Reynolds number
Re
τ
as high as 80 000 is treated by large-eddy simulation at a moderate cost, using the subgrid-scale model designed for detached-eddy simulations. It includes wall modeling, and was not adjusted for this flow. The grid count scales with the logarithm of the Reynolds number. Three independent codes are in fair agreement with each other. Reynolds-number variations and grid refinement cause trades between viscous, modeled, and resolved shear stresses. The skin-friction coefficient is too low, on the order of 15%. The velocity profiles contain a “modeled” logarithmic layer near the wall and some suggest a “resolved” logarithmic layer farther up, but the two layers have a mismatch of several units in
U
+
. |
| doi_str_mv | 10.1063/1.870414 |
| format | Article |
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Re
τ
as high as 80 000 is treated by large-eddy simulation at a moderate cost, using the subgrid-scale model designed for detached-eddy simulations. It includes wall modeling, and was not adjusted for this flow. The grid count scales with the logarithm of the Reynolds number. Three independent codes are in fair agreement with each other. Reynolds-number variations and grid refinement cause trades between viscous, modeled, and resolved shear stresses. The skin-friction coefficient is too low, on the order of 15%. The velocity profiles contain a “modeled” logarithmic layer near the wall and some suggest a “resolved” logarithmic layer farther up, but the two layers have a mismatch of several units in
U
+
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Re
τ
as high as 80 000 is treated by large-eddy simulation at a moderate cost, using the subgrid-scale model designed for detached-eddy simulations. It includes wall modeling, and was not adjusted for this flow. The grid count scales with the logarithm of the Reynolds number. Three independent codes are in fair agreement with each other. Reynolds-number variations and grid refinement cause trades between viscous, modeled, and resolved shear stresses. The skin-friction coefficient is too low, on the order of 15%. The velocity profiles contain a “modeled” logarithmic layer near the wall and some suggest a “resolved” logarithmic layer farther up, but the two layers have a mismatch of several units in
U
+
.</description><subject>Aerodynamics</subject><subject>Computer simulation</subject><subject>Engineering Sciences</subject><subject>Fluid mechanics</subject><subject>Fluids mechanics</subject><subject>Friction</subject><subject>Mathematics</subject><subject>Mechanical properties</subject><subject>Mechanics</subject><subject>Navier Stokes equations</subject><subject>Numerical Analysis</subject><subject>Physics</subject><subject>Reynolds number</subject><subject>Turbulence</subject><subject>Velocity</subject><subject>Viscosity</subject><issn>1070-6631</issn><issn>1089-7666</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2000</creationdate><recordtype>article</recordtype><recordid>eNqd0E1LwzAYB_AgCs4p-BF68uXQmTTNk-Y4hm8w8KLnkKXpFkmb2nSTfXtTK_PmwUNI-PMjPM8foUuCZwQDvSOzguOc5EdoQnAhUg4Ax8Ob4xSAklN0FsI7xpiKDCYI5k2i2rbzSm-S3iefyrmk9qVxtlkntkmc6tYmNWW5T4Ktt0711jfhHJ1UygVz8XNP0dvD_eviKV2-PD4v5stU5wz6lAoo4uGYac0Zo9ysRAFljHJDY8gqpQjFolKF0EzkHPhgy5LR1Urxik7R7fjvRjnZdrZW3V56ZeXTfCmHDGNBcCbYjkR7Pdq4zcfWhF7WNmjjnGqM3wbJcyAABaFRXv0pMw4sIyyL8GaEuvMhdKY6zECwHOqWRI51_04atO2_S_qX3fnu4GRbVvQLj86KWw</recordid><startdate>20000701</startdate><enddate>20000701</enddate><creator>Nikitin, N. V.</creator><creator>Nicoud, F.</creator><creator>Wasistho, B.</creator><creator>Squires, K. D.</creator><creator>Spalart, P. R.</creator><general>American Institute of Physics</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>FR3</scope><scope>KR7</scope><scope>7TC</scope><scope>1XC</scope><orcidid>https://orcid.org/0000-0002-0006-8422</orcidid></search><sort><creationdate>20000701</creationdate><title>An approach to wall modeling in large-eddy simulations</title><author>Nikitin, N. V. ; Nicoud, F. ; Wasistho, B. ; Squires, K. D. ; Spalart, P. R.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c456t-3968396705cc75537eb986d3964e305c5faa1309fa89c594767705cdd53bba7f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2000</creationdate><topic>Aerodynamics</topic><topic>Computer simulation</topic><topic>Engineering Sciences</topic><topic>Fluid mechanics</topic><topic>Fluids mechanics</topic><topic>Friction</topic><topic>Mathematics</topic><topic>Mechanical properties</topic><topic>Mechanics</topic><topic>Navier Stokes equations</topic><topic>Numerical Analysis</topic><topic>Physics</topic><topic>Reynolds number</topic><topic>Turbulence</topic><topic>Velocity</topic><topic>Viscosity</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Nikitin, N. V.</creatorcontrib><creatorcontrib>Nicoud, F.</creatorcontrib><creatorcontrib>Wasistho, B.</creatorcontrib><creatorcontrib>Squires, K. D.</creatorcontrib><creatorcontrib>Spalart, P. R.</creatorcontrib><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><collection>Mechanical Engineering Abstracts</collection><collection>Hyper Article en Ligne (HAL)</collection><jtitle>Physics of fluids (1994)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Nikitin, N. V.</au><au>Nicoud, F.</au><au>Wasistho, B.</au><au>Squires, K. D.</au><au>Spalart, P. R.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>An approach to wall modeling in large-eddy simulations</atitle><jtitle>Physics of fluids (1994)</jtitle><date>2000-07-01</date><risdate>2000</risdate><volume>12</volume><issue>7</issue><spage>1629</spage><epage>1632</epage><pages>1629-1632</pages><issn>1070-6631</issn><eissn>1089-7666</eissn><coden>PHFLE6</coden><abstract>Channel flow with friction Reynolds number
Re
τ
as high as 80 000 is treated by large-eddy simulation at a moderate cost, using the subgrid-scale model designed for detached-eddy simulations. It includes wall modeling, and was not adjusted for this flow. The grid count scales with the logarithm of the Reynolds number. Three independent codes are in fair agreement with each other. Reynolds-number variations and grid refinement cause trades between viscous, modeled, and resolved shear stresses. The skin-friction coefficient is too low, on the order of 15%. The velocity profiles contain a “modeled” logarithmic layer near the wall and some suggest a “resolved” logarithmic layer farther up, but the two layers have a mismatch of several units in
U
+
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| fulltext | fulltext |
| identifier | ISSN: 1070-6631 |
| ispartof | Physics of fluids (1994), 2000-07, Vol.12 (7), p.1629-1632 |
| issn | 1070-6631 1089-7666 |
| language | eng |
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| source | AIP Journals Complete; AIP Digital Archive |
| subjects | Aerodynamics Computer simulation Engineering Sciences Fluid mechanics Fluids mechanics Friction Mathematics Mechanical properties Mechanics Navier Stokes equations Numerical Analysis Physics Reynolds number Turbulence Velocity Viscosity |
| title | An approach to wall modeling in large-eddy simulations |
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