Prof. Mahendra Verma, Soumyadeep Chatterjee have discovered that 2D Euler flow-flow with zero viscosity–evolves from disorder to order
Physicists at IIT Kanpur have unraveled insights to the Second Law of Thermodynamics. Prof. Mahendra Verma and research scholar Soumyadeep Chatterjee, have discovered that 2D Euler flow-flow with zero viscosity–evolves from disorder to order, said a release from IIT-K.
The study involving analytical arguments and accurate numerical simulations provides useful insights that can help the manner in which scientists approach important fundamental topics such as order to disorder evolution, the Second Law of Thermodynamics, and thermalization, the process through which physical processes reach thermal equilibrium.
The study, “Hydrodynamic Entropy and Emergence of Order in Two-dimensional Euler Turbulence” published in Physical Review Fluids journal finds that 2D Euler flow evolves from order to disorder and that the system is out of equilibrium with an interesting energy exchange among the flow structures so as to violate the detailed energy balance.
In fact, there is an inverse cascade of energy, which is responsible for the nonequilibrium behavior of 2D Euler turbulence.
As per the laws of Thermodynamics, the thermodynamic entropy of the Euler flow remains constant.
The researchers, Prof. Verma and Chatterjee, proposed “hydrodynamic entropy” as a measure of order in a multiscale and nonequilibrium system such as hydrodynamic and astrophysical systems, and employed it in Euler turbulence.
They have shown that the hydrodynamic entropy of 2D Euler flow decreases with time during its approach to the asymptotic state. The duo has also found that the final state of the flow depends critically on the initial condition.
The hydrodynamic entropy proposed in the study, as per the researchers, may prove to be a useful tool for quantifying order in biological, hydrodynamic, astrophysical, ecological, and economic systems.
[With Inputs from IANS]
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Foolish & ignorant IITs.
Do you not know that there is NO concept of “Time” nor “past” nor “future” in Hindu Universe. Lord Brahma has 5 heads, one gone for xyz reason. A man with 4 heads, can see 360 deg. to him there is no front nor back (past or future) everything is present.
Require mind to understand (NOT physical brain for Brain is Western physiology term)
Foolish IITs. Do some research on laws of karma better than that Newton fellow.
China (Mao Tse Deng in 1950s & 1960s) killed birds & that birds are now taking revenge on China through bird flue or variations of birds
Chinese still eat birds as part of their food diet. Can you imagine it ? Earlier it was UK – Mad Cow disease. Then Camel disease……….the list goes on & on. That country eating habits, that animal related virus or health ailment.