Rate of change of vorticity covariance in MHD turbulent flow of dusty incompressible fluid

1990 ◽  
Vol 14 (5) ◽  
pp. 573-577 ◽  
Author(s):  
N. Kishore ◽  
M. S. Alam Sarker
Keyword(s):  
Turbulent Flow ◽  
Incompressible Fluid ◽  
Rate Of Change

Calculation of turbulent flow of an incompressible fluid in a circular tube with suction through porous walls

1983 ◽  
Vol 17 (4) ◽  
pp. 559-564 ◽  
Author(s):  
V. M. Eroshenko ◽  
A. V. Ershov ◽  
L. I. Zaichik
Keyword(s):  
Turbulent Flow ◽  
Incompressible Fluid ◽  
Circular Tube ◽  
Porous Walls

Paper 6: Turbulent Lubrication Theory Applied to Fluid Film Bearing Design

1969 ◽  
Vol 184 (12) ◽  
pp. 40-47 ◽  
Author(s):  
C. M. Taylor
Keyword(s):  
Turbulent Flow ◽  
Incompressible Fluid ◽  
Thrust Bearing ◽  
Lubrication Theory ◽  
Fluid Film ◽  
Finite Width ◽  
Flow Conditions ◽  
Bearing Design ◽  
Turbulent Flow Conditions

The fluid film bearing designer is encountering situations of turbulent lubrication with ever-increasing regularity. This paper is not concerned with the fundamentals of turbulent lubrication but more with an assessment of the methods available to the bearing designer for the examination of turbulent flow conditions and with the effect of turbulence. The two main ‘engineering’ approaches to turbulence are delineated and their quantitative predictions compared for the case of a finite width plane inclined slider thrust bearing hydrodynamically lubricated with an isoviscous incompressible fluid.

The Special Form of Second Order Accuracy N-S Equations for Incompressible Fluid

2014 ◽  
Vol 644-650 ◽  
pp. 1644-1647
Author(s):  
Zhan Song Li ◽  
Shi Jiang Zhu
Keyword(s):  
Laminar Flow ◽  
Turbulent Flow ◽  
Incompressible Fluid ◽  
Special Form ◽  
Higher Order ◽  
Second Order ◽  
Time And Space ◽  
Order Accuracy ◽  
First Order

Classic N-S equation has first order accuracy in both of time and space. It has only the terms of first order, without the terms of second or higher order. These terms are relative in time and space steps. The time and space steps, as basic elements of fluid research, should be only some finite quantities and not be infinitely near to zero as defined in mathematics. If the terms of second or higher order can be ignored depends on the value of the corresponding derivative multiplied. Compared with terms of first order, the terms of second or higher order can be ignored under the condition of laminar flow. However, under the condition of turbulent flow, these can’t be ignored yet. When turbulent flow develops fully, the terms of first order, compared with terms of second order, can be ignored. So, it is why classic N-S equations aren’t closed when they are used to analyze turbulent flow. On the basic, many different special forms of the second order accuracy N-S equations of incompressible fluid are derived.

Thermal Effects in Face Seals

1969 ◽  
Vol 91 (3) ◽  
pp. 434-437 ◽  
Author(s):  
H. J. Sneck
Keyword(s):  
Temperature Distribution ◽  
Turbulent Flow ◽  
Incompressible Fluid ◽  
Thermal Effects ◽  
Face Seal ◽  
Temperature Level ◽  
Face Seals ◽  
Laminar And Turbulent Flow ◽  
Parallel Surfaces

The laminar and turbulent flow of an incompressible fluid between the rotating parallel surfaces of a face seal is investigated analytically to determine the influence of conduction, convection, and dissipation on the temperature distribution. A method of estimating the general temperature level within the seal is suggested.

A refinement of previous hypotheses concerning the local structure of turbulence in a viscous incompressible fluid at high Reynolds number

1962 ◽  
Vol 13 (1) ◽  
pp. 82-85 ◽  
Author(s):  
A. N. Kolmogorov
Keyword(s):  
Reynolds Number ◽  
Energy Transfer ◽  
Turbulent Flow ◽  
Incompressible Fluid ◽  
Local Structure ◽  
High Reynolds Number ◽  
Viscous Incompressible Fluid ◽  
High Reynolds ◽  
Internal Scale

The hypotheses concerning the local structure of turbulence at high Reynolds number, developed in the years 1939-41 by myself and Oboukhov (Kolmogorov 1941 a,b,c; Oboukhov 1941 a,b) were based physically on Richardson's idea of the existence in the turbulent flow of vortices on all possible scales l < r < L between the ‘external scales’ L and the ‘internal scale’ l and of a certain uniform mechanism of energy transfer from the coarser-scaled vortices to the finer.

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