Influence of the computational domain on DNS of turbulent heat transfer up to Re-tau=2000 for Pr=0.71
[EN] We present a new set of direct numerical simulation data of a passive thermal flow in a turbulent plane Poiseuille flow with constant Prandtl number Pr = 0.71, and mixed boundary conditions. Simulations were performed at Re-tau = 500, 1000, and 2000 for several computational domains in the rang...
| Autores: | ; ; |
|---|---|
| Tipo de documento: | Artículo |
| Fecha de publicación: | 2018 |
| País: | España |
| Institución: | Universitat Politècnica de València (UPV) |
| Repositorio: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| Lenguaje: | Inglés |
| OAI Identifier: | oai:riunet.upv.es:10251/123500 |
| Acceso en línea: | https://riunet.upv.es/handle/10251/123500 |
| Nivel de acceso: | Acceso abierto |
| Palabra clave: | Turbulent channel flow Forced convection Rayleigh number Prandtl number INGENIERIA AEROESPACIAL MATEMATICA APLICADA |
| _version_ | 1878737790591565824 |
|---|---|
| author | Lluesma-Rodriguez, F. |
| author2 | Hoyas, Sergio|||0000-0002-8458-7288 Pérez Quiles, María Jezabel |
| author2_role | author author |
| author_browse | Hoyas, Sergio|||0000-0002-8458-7288 Lluesma-Rodriguez, F. Pérez Quiles, María Jezabel |
| author_facet | Lluesma-Rodriguez, F. Hoyas, Sergio|||0000-0002-8458-7288 Pérez Quiles, María Jezabel |
| author_role | author |
| collection | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| description | [EN] We present a new set of direct numerical simulation data of a passive thermal flow in a turbulent plane Poiseuille flow with constant Prandtl number Pr = 0.71, and mixed boundary conditions. Simulations were performed at Re-tau = 500, 1000, and 2000 for several computational domains in the range of l(x) = 2 pi h to 8 pi h and l(z)= pi h to 3 pi h. As a first key result we found that a length of l(x) = 2 pi h and a width of l(z) = pi is enough to accurately obtain the one-point statistics and the budgets of the thermal kinetic energy, its dissipation and the thermal fluxes. None of them collapse exactly in wall units. On the other hand, the value of the thermal Karman constant grows very slightly with the Reynolds number with a value of K-th = 0.44 for Re-tau = 2000. (C) 2018 Elsevier Ltd. All rights reserved. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | ES_a501e6851bca9e5ae4d8663c47b2aa01 |
| institution | Universitat Politècnica de València (UPV) |
| instname_str | Universitat Politècnica de València (UPV) |
| language | eng |
| network_acronym_str | ES |
| network_name_str | España |
| oai_identifier_str | oai:riunet.upv.es:10251/123500 |
| publishDate | 2018 |
| publishDateSort | 2018 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| reponame_str | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| spelling | Influence of the computational domain on DNS of turbulent heat transfer up to Re-tau=2000 for Pr=0.71 Lluesma-Rodriguez, F. Hoyas, Sergio|||0000-0002-8458-7288 Pérez Quiles, María Jezabel Turbulent channel flow Forced convection Rayleigh number Prandtl number INGENIERIA AEROESPACIAL MATEMATICA APLICADA [EN] We present a new set of direct numerical simulation data of a passive thermal flow in a turbulent plane Poiseuille flow with constant Prandtl number Pr = 0.71, and mixed boundary conditions. Simulations were performed at Re-tau = 500, 1000, and 2000 for several computational domains in the range of l(x) = 2 pi h to 8 pi h and l(z)= pi h to 3 pi h. As a first key result we found that a length of l(x) = 2 pi h and a width of l(z) = pi is enough to accurately obtain the one-point statistics and the budgets of the thermal kinetic energy, its dissipation and the thermal fluxes. None of them collapse exactly in wall units. On the other hand, the value of the thermal Karman constant grows very slightly with the Reynolds number with a value of K-th = 0.44 for Re-tau = 2000. (C) 2018 Elsevier Ltd. All rights reserved. This work was supported by the Ministerio de Empleo y Competitividad, project ENE2015-71333-R. The computations of the new simulations were made possible by a generous grant of computing time from the Supercomputation center of the Universitat Politecnica de Valencia. We are grateful to Mr. Kawamura for providing us with copies of their original data. Elsevier https://riunet.upv.es/handle/10251/123500 |
| spellingShingle | Influence of the computational domain on DNS of turbulent heat transfer up to Re-tau=2000 for Pr=0.71 Lluesma-Rodriguez, F. Turbulent channel flow Forced convection Rayleigh number Prandtl number INGENIERIA AEROESPACIAL MATEMATICA APLICADA |
| title | Influence of the computational domain on DNS of turbulent heat transfer up to Re-tau=2000 for Pr=0.71 |
| title_full | Influence of the computational domain on DNS of turbulent heat transfer up to Re-tau=2000 for Pr=0.71 |
| title_fullStr | Influence of the computational domain on DNS of turbulent heat transfer up to Re-tau=2000 for Pr=0.71 |
| title_full_unstemmed | Influence of the computational domain on DNS of turbulent heat transfer up to Re-tau=2000 for Pr=0.71 |
| title_short | Influence of the computational domain on DNS of turbulent heat transfer up to Re-tau=2000 for Pr=0.71 |
| title_sort | Influence of the computational domain on DNS of turbulent heat transfer up to Re-tau=2000 for Pr=0.71 |
| topic | Turbulent channel flow Forced convection Rayleigh number Prandtl number INGENIERIA AEROESPACIAL MATEMATICA APLICADA |
| topic_facet | Turbulent channel flow Forced convection Rayleigh number Prandtl number INGENIERIA AEROESPACIAL MATEMATICA APLICADA |
| url | https://riunet.upv.es/handle/10251/123500 |