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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.show moreshow less

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Metadaten
Author: Marten KleinORCiD, Juan Alí Medina MéndezORCiD, Heiko SchmidtORCiD
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
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