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Hydrodynamic stability

 

 
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Hydrodynamic stability
 
 
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In fluid dynamics
Fluid dynamics

In physics, fluid dynamics is the sub-discipline of fluid mechanics dealing with fluid flow — the natural science of fluids in motion....
, hydrodynamic stability is the field which analyses the stability and the onset of instability
Instability

Instability in systems is generally characterized by some of the outputs or internal state growing without bounds. Not all systems that are not stability are unstable; systems can also be marginal stability or exhibit limit cycle behavior....
 of fluid
Fluid

A fluid is defined as a substance that continually deforms under an applied shear stress. All liquids and all gases are fluids. Fluids are a subset of the Phase and include liquids, gas, Plasma physics and, to some extent, plasticity ....
 flows. Instabilities may develop further into turbulence
Turbulence

In fluid dynamics, turbulence or turbulent flow is a fluid regime characterized by chaotic, stochastic property changes. This includes low momentum diffusion, high momentum convection, and rapid variation of pressure and velocity in space and time....
.






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Saturn Kelvin Helmholtz
In fluid dynamics
Fluid dynamics

In physics, fluid dynamics is the sub-discipline of fluid mechanics dealing with fluid flow — the natural science of fluids in motion....
, hydrodynamic stability is the field which analyses the stability and the onset of instability
Instability

Instability in systems is generally characterized by some of the outputs or internal state growing without bounds. Not all systems that are not stability are unstable; systems can also be marginal stability or exhibit limit cycle behavior....
 of fluid
Fluid

A fluid is defined as a substance that continually deforms under an applied shear stress. All liquids and all gases are fluids. Fluids are a subset of the Phase and include liquids, gas, Plasma physics and, to some extent, plasticity ....
 flows. Instabilities may develop further into turbulence
Turbulence

In fluid dynamics, turbulence or turbulent flow is a fluid regime characterized by chaotic, stochastic property changes. This includes low momentum diffusion, high momentum convection, and rapid variation of pressure and velocity in space and time....
. The foundations of hydrodynamic stability, both theoretical and experimental, were laid by — notably — Helmholtz
Hermann von Helmholtz

Hermann Ludwig Ferdinand von Helmholtz was a Germany physician and physicist who made significant contributions to several widely varied areas of modern science....
, Kelvin
William Thomson, 1st Baron Kelvin

William Thomson, 1st Baron Kelvin , Order of Merit , Royal Victorian Order, Privy Council of the United Kingdom, Presidents of the Royal Society, Royal Society of Edinburgh, was an Ireland-born United Kingdom of Great Britain and Ireland Mathematical physics and engineer....
, Rayleigh
John Strutt, 3rd Baron Rayleigh

John William Strutt, 3rd Baron Rayleigh Order of Merit was an England physicist who, with William Ramsay, discovered the element argon, an achievement for which he earned the Nobel Prize for Physics in 1904....
 and Reynolds
Osborne Reynolds

Osborne Reynolds was a prominent innovator in the understanding of fluid dynamics. Separately, his studies of heat transfer between solids and fluids brought improvements in boiler and condenser design....
 during the nineteenth century.

See also

  • List of hydrodynamic instabilities
    List of hydrodynamic instabilities

    This is a list of hydrodynamic and plasma instabilities named after people ....
  • Görtler vortices
    Görtler vortices

    In fluid dynamics, G?rtler vortices are secondary flows that appears in a boundary layer flow along a concave wall. If the boundary layer is thin compared to the radius of curvature of the wall, the pressure remains constant across the boundary layer....
  • Kelvin–Helmholtz instability
  • Plasma stability
    Plasma stability

    An important field of plasma physics is the stability of the Plasma . It usually only makes sense to analyze the stability of a plasma once it has been established that the plasma is in Mechanical equilibrium....
  • Rayleigh–Taylor instability
  • Taylor–Couette flow


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