Scale-by-scale energy transfer in a dual-plane jet flow

2020 ◽  
Vol 32 (10) ◽  
pp. 105107
Author(s):  
Keli Hao ◽  
Koji Nagata ◽  
Yi Zhou
Keyword(s):  
Energy Transfer ◽  
Jet Flow ◽  
Dual Plane ◽  
Plane Jet

scholarly journals Image Measurement of Plane Jet Flow with Self-Induced Sloshing

1999 ◽  
Vol 19 (Supplement1) ◽  
pp. 297-300
Author(s):  
Taketoshi OKUNO ◽  
Shigeru NISHIO ◽  
Hidenaga IWAHASHI
Keyword(s):  
Jet Flow ◽  
Image Measurement ◽  
Plane Jet

The Shear Layers of a Two-Dimensional Jet Excited by Flexible Wires

2003 ◽  
Vol 125 (3) ◽  
pp. 597-599
Author(s):  
Ming-huei Yu ◽  
Yi-chun Liao ◽  
Chung-ho Tseng
Keyword(s):  
Spectral Analysis ◽  
Shear Layer ◽  
Density Ratio ◽  
Jet Flow ◽  
Shear Layers ◽  
Spanwise Direction ◽  
External Forcing ◽  
Two Dimensional ◽  
Air Jet ◽  
Plane Jet

A two-dimensional air jet, heated at a density ratio of 0.8, under external forcing by flexible wires is investigated experimentally. In each shear layer of the hot jet flow, a wire of diameter 0.23 mm (0.015 jet width) is flexibly mounted along the spanwise direction. By flow visualization, temperature measurements, and spectral analysis, the study demonstrates that the wires have quite different effects on the jet flow depending on that the wires are motionless or vibrating in the flow, and the shear layers of the heated plane jet can be manipulated by means of flexible wires.

A note on the conservation of the axial momentum of a turbulent jet

1978 ◽  
Vol 87 (1) ◽  
pp. 55-63 ◽  
Author(s):  
Nikolas E. Kotsovinos
Keyword(s):  
Conservation Law ◽  
Momentum Flux ◽  
Pressure Field ◽  
Jet Flow ◽  
Experimental Results ◽  
Turbulent Jet ◽  
Ambient Fluid ◽  
Induced Flow ◽  
Plane Jet ◽  
Direction Opposite

The conservation law for the flux of axial momentum in a turbulent jet is examined. The examination discloses that for a plane jet out of a wall the momentum flux is reduced appreciably because the induced flow towards the jet has a component in the direction opposite to the main jet flow and because of the pressure field generated in the ambient fluid. Existing experimental results confirm this conclusion.

The study of self-sustained oscillating plane jet flow impinging upon a small cylinder

1999 ◽  
Vol 27 (5) ◽  
pp. 392-399 ◽  
Author(s):  
F.-B. Hsiao ◽  
Y.-W. Chou ◽  
J.-M. Huang
Keyword(s):  
Jet Flow ◽  
Plane Jet ◽  
Small Cylinder

scholarly journals Effects of nanoparticle volume fraction in hydrodynamic and thermal characteristics of forced plane jet

2012 ◽  
Vol 16 (2) ◽  
pp. 455-468 ◽  
Author(s):  
T. Armaghani ◽  
M.J. Maghrebi ◽  
F. Talebi
Keyword(s):  
Numerical Simulation ◽  
Volume Fraction ◽  
Solid Volume Fraction ◽  
Thermal Characteristics ◽  
Time History ◽  
Jet Flow ◽  
Nanoparticle Volume Fraction ◽  
Reynolds Stresses ◽  
Velocity Amplitude ◽  
Plane Jet

The effects of nanoparticle volume fraction in hydrodynamic and thermal characteristics of an incompressible forced 2-D plane jet flow are investigated. Direct Numerical Simulation (DNS) of a two dimensional incompressible plane forced jet flow for two nanofluids has been performed. The base fluid is water and the nanoparticles are Al O ,CuO 2 3 . The numerical simulation is carried out for the solid volume fraction between 0 to 4%. The results for both nanofluids indicate that any increase in the solid volume fraction decreases the amplitude of temperature, velocity time histories, the turbulent intensities and that of the Reynolds stresses. The results for both two nanoparticles also indicate that with any increase in nanoparticle volume fraction, the velocity amplitude of velocity time history, the turbulent intensities and Reynolds stress in 2 3 Al O -water are greater than that ofCuO-water nanofluid.

scholarly journals PDF Modeling Study of a Self-Similar Turbulent Plane Jet Flow.

2000 ◽  
Vol 43 (2) ◽  
pp. 143-154
Author(s):  
Zuu-Chang HONG ◽  
Ming-Hua CHEN ◽  
Wen-Chien DUH
Keyword(s):  
Jet Flow ◽  
Self Similar ◽  
Turbulent Plane ◽  
Plane Jet ◽  
Modeling Study

A quantitative approach to inner shell losses

1978 ◽  
Vol 36 (1) ◽  
pp. 526-527 ◽  
Author(s):  
R.D. Leapman ◽  
P. Rez ◽  
D.F. Mayers
Keyword(s):  
Energy Transfer ◽  
Cross Section ◽  
Cross Sections ◽  
Accurate Determination ◽  
Background Intensity ◽  
Core Excitation ◽  
Quantitative Basis ◽  
Cross Section Differential ◽  
Bound Electrons

Microanalysis by EELS has been developing rapidly and though the general form of the spectrum is now understood there is a need to put the technique on a more quantitative basis (1,2). Certain aspects important for microanalysis include: (i) accurate determination of the partial cross sections, σx(α,ΔE) for core excitation when scattering lies inside collection angle a and energy range ΔE above the edge, (ii) behavior of the background intensity due to excitation of less strongly bound electrons, necessary for extrapolation beneath the signal of interest, (iii) departures from the simple hydrogenic K-edge seen in L and M losses, effecting σx and complicating microanalysis. Such problems might be approached empirically but here we describe how computation can elucidate the spectrum shape.The inelastic cross section differential with respect to energy transfer E and momentum transfer q for electrons of energy E0 and velocity v can be written as

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