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What is the mystery of turbulence? - Physics Stack Exchange What is called turbulence are precisely those states where the flow is irregular However as this transition to turbulence depends on the constituents and parameters of the system and leads to very different states, there exists sofar no general physical theory of turbulence
Are there any exact examples of non-laminar flow? The words like "non-laminar flow" or "turbulence" are very very informal It is a nontrivial task to endow these words with a mathematically correct sense Usually these words are used just to say that the flow behaves in a very complicated way And I am afraid that the sole answer to OP's question is as follows: you can not find exact solutions with "non-laminar flow" because any exact
Why is turbulence dissipation $\epsilon$ defined this way? This term is turbulence kinetic energy dissipation rate $\epsilon$, which represents the rate at which Kolmogorov eddies energy is converted back into the flow’s internal energy I understand the physic of energy cascade and turbulence dissipation, but I don't understand how did we relate the above definition to turbulence dissipation?
What does “eddy” mean in turbulence? - Physics Stack Exchange a newbie in turbulence study, very confused about the concept of eddy, I feel the word quot;eddy quot; having two meanings in fluid-mechanics maybe more and i'm not sure if i understand correctly
About turbulence modeling - Physics Stack Exchange There are examples of turbulence which are effectively described by field theoretical methods using a Hamiltonian because they possess scale separation In particular, weak (where the waves are assumed to have small slope and be narrow-banded) wave turbulence of surface waves is examined in this fashion (Zakharov won a Dirac medal for this in
What causes wind gusts? - Physics Stack Exchange In this Wikipedia article, Turbulence is caused by excessive kinetic energy in parts of a fluid flow, which overcomes the damping effect of the fluid's viscosity For this reason turbulence is commonly realized in low viscosity fluids You ask: It isn't clear to me what cause gusts, sudden increase in wind speed that lasts a few seconds at flat surfaces like sea, lake, desert, ice
how to determine if a vortex is laminar or turbulent How do I determine if the vortex so formed is laminar or turbulent? The flow in your case will have some 'lamina' features and be fully turbulent To establish the dominating factor in this case should be obvious It is the bulk motion of the flow that drives the type of vortex you describe, not turbulence What paremeter will indiacate this?