English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Plus

Presents the zaia usage as premium feature

ZAIA

Presents the pdf analysis as premium feature

PDF Analysis

Insights

Presents the summarisation as premium feature

Summarisation

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the access of premium content as premium feature

Premium Content

Zendy Tools

Zendy Open

A conservative coupled finite difference-boundary element computationalprocedure for the simulation of turbulent magnetohydrodynamic flow in astraight rectangular duct at finite magnetic Reynolds number is presented. Theflow is assumed to be periodic in the streamwise direction and is driven by amean pressure gradient. The duct walls are considered to be electricallyinsulating. The co-evolution of the velocity and magnetic fields as describedrespectively by the Navier-Stokes and the magnetic induction equations,together with the coupling of the magnetic field between the conducting domainand the non-conducting exterior is solved using the magnetic field formulation.The aim is to simulate localized magnetic fields interacting with turbulentduct flow. Detailed verification of the implementation of the numerical schemeis conducted in the limiting case of low magnetic Reynolds number by comparingwith the results obtained using a quasistatic approach that has no couplingwith the exterior. The rigorous procedure with non-local magnetic boundaryconditions is compared versus simplified pseudo-vacuum boundary conditions andthe differences are quantified. Our first direct numerical simulations ofturbulent Hartmann duct flow at moderate magnetic Reynolds numbers and a lowflow Reynolds number show significant differences in the duct flow turbulence,even at low interaction level between the flow and magnetic field

A hybrid finite-difference/boundary element procedure for the simulation of turbulent MHD duct flow at finite magnetic Reynolds numbers