Pipe Flow and Wall Turbulence Using a Modified Navier-Stokes Equation

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F44555601%3A13520%2F12%3A43883888" target="_blank" >RIV/44555601:13520/12:43883888 - isvavai.cz</a>
Result on the web
<a href="http://www.iop.org/EJ/journal/ctp" target="_blank" >http://www.iop.org/EJ/journal/ctp</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/0253-6102/57/3/22" target="_blank" >10.1088/0253-6102/57/3/22</a>

Result language
angličtina
Original language name
Pipe Flow and Wall Turbulence Using a Modified Navier-Stokes Equation
Original language description
We use a derived incompressible modified Navier-Stokes equation to model pipe flow and wall turbulence. We reproduce the observed flattened paraboloid velocity profiles of turbulence that cannot be obtained directly using standard incompressible Navier-Stokes equation. The solutions found are in harmony with multi-valued velocity fields as a definition of turbulence. Repeating the procedure for the flow of turbulent fluid between two parallel flat plates we find similar flattened velocity profiles. We extend the analysis to the turbulent flow along a single wall and compare the results with experimental data and the established controversial von Karman logarithmic law of the wall
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BE - Theoretical physics
OECD FORD branch
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Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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