A MHD reverse flow in 90 degree bend

TL;DR

This paper investigates how a magnetic field influences liquid flow in a 90-degree bend, revealing that magnetic forces can suppress pressure gradients and induce reverse flow, using spectral/hp element simulations.

Contribution

It introduces a spectral/hp element method application to analyze magnetic effects on flow in a bent channel, identifying three steady flow types and reverse flow phenomena.

Findings

Magnetic forces can suppress pressure gradients.

A large reverse flow can be induced by magnetic fields.

Three types of steady flows were identified.

Abstract

A two-dimensional flow in a 90 degree bent channel is considered. A magnetic field is uniform and parallel to inlet branch of the channel. A spectral/hp element method was used for liquid motion calculations. Three types of steady flows were detected. It was found that magnetic forces can suppress a pressure gradient and throw out liquid from the inlet, a relatively large reverse flow appears.