Non-equilibrium behavior of large-scale axial vortex cores
Source abstract
Abstract
A logical basis for incorporating pressure non-equilibrium and turbulent eddy viscosity in an incompressible vortex model is presented. The infrasonic acoustic source implied in our earlier work has been examined. Finally, this non-equilibrium turbulent vortex core is shown to dissipate mechanical energy more slowly than a Burgers vortex, helping us to explain the persistence of axial vortices in nature. Recent molecular dynamics simulations replicate aspects of this non-equilibrium pressure behavior.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Advanced Thermodynamics and Statistical Mechanics · Fluid Dynamics and Turbulent Flows · Advanced Thermodynamic Systems and Engines
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Affiliations
Mechanical and Aerospace Engineering Department, Old Dominion University 1 , Norfolk, Virginia 23529, USA
Tigercat Industries, Inc. 2 , Paris, Ontario N3L 3T6, Canada
Funding
I Must Use Personal Funds
References (21)
Show source-provided references
1. Variational approach to the volume viscosity of fluid10.1063/1.2180780 ↗
2. Volume viscosity in fluids with multiple dissipative processes10.1063/1.3085814 ↗
3. ANSI Standard S1, 26-1995 · 1995
4. The influence of pressure relaxation on the structure of an axial vortex10.1063/1.3609270 ↗
5. Origin of cyclones
6. Uber die wirbelbewegung in einer reibenden flusigkeit
7. Angular momentum diffusion and the initiation of cyclones10.1038/260126a0 ↗
8. Oscillating-grid turbulence including effects of rotation10.1017/s002211208300018x ↗
9. On the hurricane collective molecular dynamics10.1088/1742-6596/1275/1/012017 ↗
10. The free-stream boundaries of turbulent flow
11. The lower structure of dust devils10.1175/1520-0469(1973)030<1599:tlsodd>2.0.co;2 ↗
12. Molecular hydrodynamics: Vortex formation and sound wave propagation10.1063/1.5011992 ↗
13. Characteristics of tornado-like vortices simulated in a large-scale Ward-type simulator10.1007/s10546-017-0305-7 ↗
14. Low-frequency sound absorption measurements in air
15. Low-frequency sound absorption measurements in air10.1121/1.392927 ↗
16. The solution of the Boltzmann equation for a shock wave10.1103/physrev.82.885 ↗
17. Near-ground pressure and wind measurements in tornadoes10.1175/2010mwr3201.1 ↗
18. 1992 · 264
19. A mathematical model illustrating the theory of turbulence10.1016/s0065-2156(08)70100-5 ↗
20. The musical sound emitted by a tornado10.1175/1520-0493(1966)094<0213:tmseba>2.3.co;2 ↗
21. Measurement and characterization of infrasound from a tornado producing storm10.1121/1.5124486 ↗