# Instability in electromagnetically driven flows. II

@article{Imazio2016InstabilityIE, title={Instability in electromagnetically driven flows. II}, author={Paola Rodriguez Imazio and Christophe Gissinger}, journal={Physics of Fluids}, year={2016}, volume={28}, pages={034102} }

The magnetohydrodynamic flow driven by a travelling magnetic field in an annular channel is investigated numerically. For sufficiently large magnetic Reynolds numberRm, or if a large enough pressure gradient is externally applied, the system undergoes an instability in which the flow rate in the channel dramatically drops from synchronism with the wave to much smaller velocities. This transition takes the form of a saddle-node bifurcation for the time-averaged quantities. In this first paper…

## 10 Citations

### Instability in electromagnetically driven flows Part II

- Physics
- 2016

In a previous paper, we have reported numerical simulations of the MHD flow driven by a travelling magnetic field (TMF) in an annular channel, at low Reynolds number. It was shown that the stalling…

### Instabilities of MHD flows driven by traveling magnetic fields

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The flow of an electrically conducting fluid driven by a traveling magnetic field imposed at the endcaps of a cylindrical annulus is numerically studied. At sufficiently large magnetic Reynolds…

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An electromagnetic pump has been used for transportation of electrically conducting liquid metal coolant. Each component of an electromagnetic pump should be appropriately designed based on the…

### Forçage électromagnétique dans les métaux liquides

- 2018

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### Mechanisms of energy conversion in induction magnetohydrodynamic pumps for transporting conducting liquids

- PhysicsEnergy
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### Numerical study of the magnetohydrodynamic flow instability and its effect on energy conversion in the annular linear induction pump

- EngineeringPhysics of Fluids
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### Analysis on the Inception of the Magnetohydrodynamic Flow Instability in the Annular Linear Induction Pump Channel

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Flow instability is the intricate phenomenon in the annular linear induction pump (ALIP) when the pump runs at off-design working condition. A three-dimensional (3D) numerical model is built to…

### 1/f noise and long-term memory of coherent structures in a turbulent shear flow.

- PhysicsPhysical review. E
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A shear flow of liquid metal (Galinstan) is driven in an annular channel by counter-rotating traveling magnetic fields imposed at the end caps; a continuous transition between two different types of Flicker noise is observed as the equatorial symmetry of the flow is broken, in agreement with theoretical predictions.

### Boundary interface condition of magnetic fluid determines the magnetic levitation force experienced by a permanent magnet suspended in the magnetic fluid

- PhysicsPhysics of Fluids
- 2018

The buoyancy experienced by a permanent magnet suspended in magnetic fluid is studied, and the expression for calculating the magnetic fluid buoyancy is derived. The magnetic fluid buoyancy or…

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The MHD flow driven by a travelling magnetic field (TMF) in an annular channel is investigated numerically. For sufficiently large magnetic Reynolds number Rm, or if a large enough pressure gradient…

### Instability in electromagnetically driven flows Part II

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- 2016

In a previous paper, we have reported numerical simulations of the MHD flow driven by a travelling magnetic field (TMF) in an annular channel, at low Reynolds number. It was shown that the stalling…

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In preparation for an experimental study of magnetorotational instability (MRI) in liquid metal, we present nonideal axisymmetric magnetohydrodynamic simulations of the nonlinear evolution of MRI in…

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