PMID: 22587259May 17, 2012Paper

Observation of a free-Shercliff-layer instability in cylindrical geometry

Physical Review Letters
A RoachHantao Ji

Abstract

We report on observations of a free-Shercliff-layer instability in a Taylor-Couette experiment using a liquid metal over a wide range of Reynolds numbers, Re∼10(3)-10(6). The free Shercliff layer is formed by imposing a sufficiently strong axial magnetic field across a pair of differentially rotating axial end cap rings. This layer is destabilized by a hydrodynamic Kelvin-Helmholtz-type instability, characterized by velocity fluctuations in the r-θ plane. The instability appears with an Elsasser number above unity, and saturates with an azimuthal mode number m which increases with the Elsasser number. Measurements of the structure agree well with 2D global linear mode analyses and 3D global nonlinear simulations. These observations have implications for a range of rotating MHD systems in which similar shear layers may be produced.

References

Sep 28, 2004·Physical Review Letters·Daniel R SisanDaniel P Lathrop
Oct 4, 2005·Physical Review Letters·Rainer Hollerbach, Günther Rüdiger
Jun 3, 2008·The Review of Scientific Instruments·N B MorleyM D Nornberg
Jul 23, 2008·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Wei Liu
Oct 15, 2008·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·X Wei, R Hollerbach
Mar 5, 2009·The Review of Scientific Instruments·E SchartmanM J Burin
Apr 7, 2010·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Frank StefaniJacek Szklarski
Sep 21, 2011·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Christophe GissingerJeremy Goodman

❮ Previous
Next ❯

Citations

Jun 13, 2015·Scientific Reports·Sebastian AltmeyerYing-Cheng Lai
Jul 18, 2018·Physical Review. E·Kyle J CasparyHantao Ji
Nov 14, 2015·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·E M Edlund, H Ji
Sep 19, 2020·Physical Review. E·Himawan W WinartoYin Wang
Jan 20, 2018·Physical Review. E·Yurong ZhaoXiangming Xiong
May 22, 2021·Physical Review Letters·J MilhoneC B Forest

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

Related Papers

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
Christophe GissingerJ Goodman
Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
D BritoD Schmitt
Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
Douglas H KelleyDaniel P Lathrop
© 2021 Meta ULC. All rights reserved