Study of initial segment of turbulent jets of various gases in a parallel air stream

Abramovich, G. N.; Yakovlevskii, O. V.; Smirnova, I. P.; Sekundov, A. N.; Krasheninnikov, S. Yu.

doi:10.1007/bf01022295

Cited by 10 publications

(16 citation statements)

References 1 publication

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“…However, he did not relate it to the influence of the width of the slot d. Processing the data of Kotsovinos has given to us the scaling relation 3 with a value ␤ ϭ 1.1, differing in a statistically significant way from ␤ ϭ 1, which also reveals that we are in the presence of incomplete similarity. We direct the reader to a remarkable source of information about turbulent jets: the comprehensive treatises (18,19) …”

Section: Analysis Of Experimental Data and Basic Hypothesesmentioning

confidence: 99%

The turbulent wall jet: A triple-layered structure and incomplete similarity

Баренблатт

Chorin

Prostokishin

2005

Proc. Natl. Acad. Sci. U.S.A.

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We demonstrate using the high-quality experimental data that turbulent wall jet flows consist of two self-similar layers: a top layer and a wall layer, separated by a mixing layer where the velocity is close to maximum. The top and wall layers are significantly different from each other, and both exhibit incomplete similarity, i.e., a strong influence of the width of the slot that had previously been neglected.turbulence ͉ turbulent jets ͉ scaling ͉ power law

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Section: Analysis Of Experimental Data and Basic Hypothesesmentioning

confidence: 99%

The turbulent wall jet: A triple-layered structure and incomplete similarity

Баренблатт

Chorin

Prostokishin

2005

Proc. Natl. Acad. Sci. U.S.A.

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“…Influence of particles dynamics on the gas parameters was taken into account in the second approach. Euler equations in the one-dimensional approximation were solved simultaneously with the equations for multicomponent "gas" of particles [10,11]. Change in cross-sectional jet diameter was taken into account before the first Mach disc, further the diameter of the cross section of the jet was considered as constant.…”

Section: Thermophysical Basis Of Energy Technologiesmentioning

confidence: 99%

The crystallization processes in the aluminum particles production technology

Архипов

Бондарчук

Gol’din

et al. 2015

EPJ Web of Conferences

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Abstract.The physical and mathematical model of the crystallization process of liquid aluminum particles in the spray-jet of the ejection-type atomizer was proposed. The results of mathematical modeling of two-phase flow in the spray-jet and the crystallization process of fluid particles are given. The influence of the particle size, of the flow rate and the stagnation temperature gas in the ranges of industrial technology implemented for the production of powders aluminum of brands ASD, on the crystallization characteristics were investigated. The approximations of the characteristics of the crystallization process depending on the size of the aluminum particles on the basis of two approaches to the mathematical description of the process of crystallization of aluminum particles were obtained. The results allow to optimize the process parameters of ejection-type atomizer to produce aluminum particles with given morphology.

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“…3 a. The fluid layer within which the mean velocity changes significantly is called the shear layer or the mixing layer (see, for example, [84,86,87]). It can be seen from Fig.…”

Section: The Main Properties Of Jet Flowsmentioning

confidence: 99%

“…The processes in the jet main part are studied in considerable detail (see, e.g. [85][86][87][88][89][90][91][92][93]). We will consider only the processes in the initial part of a jet.…”

Section: The Main Properties Of Jet Flowsmentioning

confidence: 99%

Development of turbulence in subsonic submerged jets

Landa

McClintock

2004

Physics Reports

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The development of turbulence in subsonic submerged jets is reviewed. It is shown that the turbulence results from a strong amplification of the weak input noise that is always present in the jet nozzle exit section. At a certain distance from the nozzle the amplification becomes essentially nonlinear. This amplified noise leads to a transition of the system to a qualitatively new state, which depends only slightly on the characteristics of the input noise, such as its power spectrum. Such a transition has much in common with nonequilibrium noise-induced phase transitions in nonlinear oscillators with multiplicative and additive noise. The Krylov-Bogolyubov method for spatially extended systems is used to trace the evolution of the power spectra, the root-mean-square amplitude of the turbulent pulsations, and the mean velocity, with increasing distance from the nozzle. It is shown that, as turbulence develops, its longitudinal and transverse scales increase. The results coincide qualitatively and also, in specific cases, quantitatively, with known experimental data.

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Study of initial segment of turbulent jets of various gases in a parallel air stream

Cited by 10 publications

References 1 publication

The turbulent wall jet: A triple-layered structure and incomplete similarity

The turbulent wall jet: A triple-layered structure and incomplete similarity

The crystallization processes in the aluminum particles production technology

Development of turbulence in subsonic submerged jets

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