Modeling electrohydrodynamically enhanced drag in channel and pipe flows using One-Dimensional Turbulenc
- The joint modeling of flow hydrodynamics and electrokinetics is a relatively unexplored area of turbulent flow research. We address a lack of available models for electrohydrodynamic (EHD) turbulent flow utilizing a lower-order approach, the stochastic One-Dimensional Turbulence (ODT) model. ODT is constructed on the principles of the direct energy cascade of Navier–Stokes turbulence, with key emphasis on the accurate resolution of the small molecular transport scales within a notional line-of-sight. We investigate two canonical flow configurations to demonstrate the applicability of the model
in the simulation of EHD flows. First, we investigate EHD effects in zero-pressure-gradient turbulent boundary layers by two-way coupled model application to plane Couette flow of a dilute electrolyte. Second, we apply the one-way coupled model to EHD-enhanced gas flow through a vertical pipe with an inner concentric electrode, where electric fields are generated by means of a corona discharge and the corresponding effect of a continuum ionicThe joint modeling of flow hydrodynamics and electrokinetics is a relatively unexplored area of turbulent flow research. We address a lack of available models for electrohydrodynamic (EHD) turbulent flow utilizing a lower-order approach, the stochastic One-Dimensional Turbulence (ODT) model. ODT is constructed on the principles of the direct energy cascade of Navier–Stokes turbulence, with key emphasis on the accurate resolution of the small molecular transport scales within a notional line-of-sight. We investigate two canonical flow configurations to demonstrate the applicability of the model
in the simulation of EHD flows. First, we investigate EHD effects in zero-pressure-gradient turbulent boundary layers by two-way coupled model application to plane Couette flow of a dilute electrolyte. Second, we apply the one-way coupled model to EHD-enhanced gas flow through a vertical pipe with an inner concentric electrode, where electric fields are generated by means of a corona discharge and the corresponding effect of a continuum ionic charge density field.…
Author: | Marten KleinORCiD, Juan Alí Medina MéndezORCiD, Heiko SchmidtORCiD |
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URL: | https://www.cmff.hu/pdf/CMFF22_Conference_Proceedings.pdf |
URL: | https://www.cmff.hu/papers/CMFF22_Final_Paper_PDF_15.pdf |
ISBN: | 978-963-421-881-4 |
Title of the source (English): | Proceedings of the Conference on Modelling Fluid Flow (CMFF’22) |
Publisher: | University of Technology and Economics, Department of Fluid Mechanics |
Place of publication: | Budapest, Hungary |
Editor: | Janos VadORCiD |
Document Type: | Conference publication peer-reviewed |
Language: | English |
Year of publication: | 2022 |
Tag: | EHD turbulence; multiphysical boundary layers; one-dimensional turbulence; stochastic modeling; turbulent drag enhancement |
First Page: | 82 |
Last Page: | 91 |
Article number: | CMFF22-015 |
Faculty/Chair: | Fakultät 3 Maschinenbau, Elektro- und Energiesysteme / FG Numerische Strömungs- und Gasdynamik |