The influence of convective exchanges on Coandã effect
Modeling Coandã effect has been a fundamental issue in fluid dynamic research in the XX century. It has lost some interest because of the improvement in CFD, even if it could be still important in the area of the preliminary design of aerodynamic devices that benefits of fluid deflection by convex s...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
National Institute for Aerospace Research “Elie Carafoli” - INCAS
2019-12-01
|
| Series: | INCAS Bulletin |
| Subjects: | |
| Online Access: | http://bulletin.incas.ro/files/trancossi__pascoa__vol_11_iss_4_a_2.pdf |
| _version_ | 1818657918324572160 |
|---|---|
| author | Michele TRANCOSSI Jose PASCOA |
| author_facet | Michele TRANCOSSI Jose PASCOA |
| author_sort | Michele TRANCOSSI |
| collection | DOAJ |
| description | Modeling Coandã effect has been a fundamental issue in fluid dynamic research in the XX century. It has lost some interest because of the improvement in CFD, even if it could be still important in the area of the preliminary design of aerodynamic devices that benefits of fluid deflection by convex surfaces. An effective model of Coandã effect has not been defined, and fundamental questions are still open. The influence of convective heat exchange on Coandã adhesion of a fluid stream on a convex surface in the presence of a temperature gradient between the fluid and the convex surface is a problem, which affects many practical cases, but it is still marginally approached by scientific literature. This paper aims to start an effective research direction on the effects of convective heat exchange on Coandã effect. It approaches the problem with a set of CFD simulations. It analyses the previous hypotheses, which are based on Prandtl number and evidences the need of a more effective model that accounts also for the Reynolds number. |
| first_indexed | 2024-12-17T03:49:07Z |
| format | Article |
| id | doaj.art-dcf1c7df6e9f4ef1b9326df00ce788a0 |
| institution | Directory Open Access Journal |
| issn | 2066-8201 2247-4528 |
| language | English |
| last_indexed | 2024-12-17T03:49:07Z |
| publishDate | 2019-12-01 |
| publisher | National Institute for Aerospace Research “Elie Carafoli” - INCAS |
| record_format | Article |
| series | INCAS Bulletin |
| spelling | doaj.art-dcf1c7df6e9f4ef1b9326df00ce788a02022-12-21T22:04:49ZengNational Institute for Aerospace Research “Elie Carafoli” - INCASINCAS Bulletin2066-82012247-45282019-12-0111419120210.13111/2066-8201.2019.11.4.17The influence of convective exchanges on Coandã effectMichele TRANCOSSI0Jose PASCOA1Henri Coanda Labs LLC, Italian Headquarter, Via Milazzo, 8, Parma 43125, Italy, mtrancossi@gmail.comC-MAST – Center for Mechanical and Aerospace Science and Technologies, Universidade da Beira Interior, Convento de Sto. António, 6201-001 Covilhã, Portugal, pascoa@ubi.ptModeling Coandã effect has been a fundamental issue in fluid dynamic research in the XX century. It has lost some interest because of the improvement in CFD, even if it could be still important in the area of the preliminary design of aerodynamic devices that benefits of fluid deflection by convex surfaces. An effective model of Coandã effect has not been defined, and fundamental questions are still open. The influence of convective heat exchange on Coandã adhesion of a fluid stream on a convex surface in the presence of a temperature gradient between the fluid and the convex surface is a problem, which affects many practical cases, but it is still marginally approached by scientific literature. This paper aims to start an effective research direction on the effects of convective heat exchange on Coandã effect. It approaches the problem with a set of CFD simulations. It analyses the previous hypotheses, which are based on Prandtl number and evidences the need of a more effective model that accounts also for the Reynolds number.http://bulletin.incas.ro/files/trancossi__pascoa__vol_11_iss_4_a_2.pdffluid dynamicsaerodynamicsbejan numberfundamental equationsthe first law of thermodynamicsthe second law of thermodynamicsconstructal law |
| spellingShingle | Michele TRANCOSSI Jose PASCOA The influence of convective exchanges on Coandã effect INCAS Bulletin fluid dynamics aerodynamics bejan number fundamental equations the first law of thermodynamics the second law of thermodynamics constructal law |
| title | The influence of convective exchanges on Coandã effect |
| title_full | The influence of convective exchanges on Coandã effect |
| title_fullStr | The influence of convective exchanges on Coandã effect |
| title_full_unstemmed | The influence of convective exchanges on Coandã effect |
| title_short | The influence of convective exchanges on Coandã effect |
| title_sort | influence of convective exchanges on coanda effect |
| topic | fluid dynamics aerodynamics bejan number fundamental equations the first law of thermodynamics the second law of thermodynamics constructal law |
| url | http://bulletin.incas.ro/files/trancossi__pascoa__vol_11_iss_4_a_2.pdf |
| work_keys_str_mv | AT micheletrancossi theinfluenceofconvectiveexchangesoncoandaeffect AT josepascoa theinfluenceofconvectiveexchangesoncoandaeffect AT micheletrancossi influenceofconvectiveexchangesoncoandaeffect AT josepascoa influenceofconvectiveexchangesoncoandaeffect |