Vortex effect: A history on its development in the USSR and Russia

2020 ◽  
Author(s):  
Sh. A. Piralishvili
Keyword(s):  
Vortex Effect

Shear effects of the stressed state in transversely isotropic plates. Part 1. Vortex effect

1998 ◽  
Vol 30 (1) ◽  
pp. 43-47
Author(s):  
V. G. Piskunov ◽  
A. V. Burygina ◽  
A. A. Rasskazov
Keyword(s):  
Stressed State ◽  
Transversely Isotropic ◽  
Vortex Effect ◽  
Isotropic Plates ◽  
Shear Effects

Parameters which determine the vortex effect

1967 ◽  
Vol 2 (3) ◽  
pp. 18-22 ◽  
Author(s):  
V. M. Entov ◽  
V. N. Kalashnikov ◽  
Yu. D. Raiskii
Keyword(s):  
Vortex Effect

scholarly journals Experimental Study on Gas–Solid Flow in the Spouted Bed under Longitudinal Vortex Effect

ACS Omega ◽  
2019 ◽  
Vol 4 (20) ◽  
pp. 18880-18888 ◽  
Author(s):  
Feng Wu ◽  
Xinxin Che ◽  
Haojie Duan ◽  
Lingyi Shang ◽  
Xiaoxun Ma ◽  
...  
Keyword(s):  
Experimental Study ◽  
Longitudinal Vortex ◽  
Spouted Bed ◽  
Solid Flow ◽  
Vortex Effect

Leading-edge vortex effect on the flutter speed

1977 ◽  
Vol 14 (9) ◽  
pp. 921-922 ◽  
Author(s):  
Valter J. E. Stark
Keyword(s):  
Leading Edge ◽  
Leading Edge Vortex ◽  
Vortex Effect ◽  
Flutter Speed ◽  
Edge Vortex

scholarly journals The generation of axial vorticity in solid-propellant rocket-motor flows

2001 ◽  
Vol 429 ◽  
pp. 283-305 ◽  
Author(s):  
S. BALACHANDAR ◽  
J. D. BUCKMASTER ◽  
M. SHORT
Keyword(s):  
Solid Propellant ◽  
Reynolds Numbers ◽  
Linear Analysis ◽  
Rocket Motor ◽  
Cautionary Note ◽  
Small Deviations ◽  
Perturbation Amplitude ◽  
Vortex Effect ◽  
Solid Propellant Rocket ◽  
Propellant Rocket

We examine small deviations from axial symmetry in a solid-propellant rocket motor, and describe a ‘bath-tub-vortex’ effect, in which substantial axial vorticity is generated in a neighbourhood of the chamber centreline. The unperturbed flow field is essentially inviscid at modest Reynolds numbers, even at the chamber walls, as has long been known, but the inviscid perturbed flow is singular at the centreline, and viscous terms are required to regularize it. We examine perturbations sufficiently small that a linear analysis is valid everywhere (εRe small, where ε is a measure of the perturbation amplitude and Re is a Reynolds number), and larger perturbations in which a nonlinear patch is created near the centreline of radius O(√ε). Our results provide an explanation of swirl experimentally observed by others, and a cautionary note for those concerned with numerical simulations of these flows, whether laminar or turbulent.

The Cooling of Methane with Vortex Tubes

1971 ◽  
Vol 13 (6) ◽  
pp. 369-375 ◽  
Author(s):  
A. Williams
Keyword(s):  
Carbon Dioxide ◽  
Natural Gas ◽  
Vortex Tube ◽  
Expansion Ratio ◽  
Methane Content ◽  
Thomson Effect ◽  
Vortex Effect ◽  
Temperature And Pressure ◽  
Vortex Tubes ◽  
Gas Supply

Measurements have been made of the amounts of cold and heat produced by a vortex tube operated with methane containing some carbon dioxide, and with Algerian natural gas, which has a high methane content. The effects of gas supply temperature and pressure have been investigated. The contribution of the Joule–Thomson effect to the total cooling has been calculated and allowed for. Vortex effect cooling decreases with lowering of the supply temperature and probably disappears at the gas liquefaction point. It is dependent on the pressure expansion ratio across the tube. The findings are compared with those of other workers and those predicted by vortex tube theories.

scholarly journals Professor A.P. Merkulov’ role in the process of research and development of the vortex effect

2021 ◽  
Vol 20 (2) ◽  
pp. 105-121
Author(s):  
V. V. Biryuk ◽  
S. V. Lukachev ◽  
V. T. Volov ◽  
Sh. A. Pirallishvili
Keyword(s):  
Separation Process ◽  
Energy Separation ◽  
Vortex Interaction ◽  
Practical Application ◽  
Vortex Effect ◽  
Separation Of Gases ◽  
Leading Position ◽  
Characteristic Features ◽  
Vortex Tubes

The article is prepared for the centenary of the birth of Alexander Petrovich Merkulov. The stages of creating the theoretical basis of the vortex effect of energy separation of gases (the hypothesis of vortex interaction), and the creation and implementation of vortex devices based on the use of the vortex effect for aviation and medicine are considered. The role of Professor A.P. Merkulov in the study of characteristic features of the energy separation process in vortex tubes and practical application of the vortex effect in the USSR is shown. The works of ONIL-9 (KuAI-SGAU) headed by Alexander Petrovich Merkulov ensured the leading position of the Soviet school of thought in the field of vortex effect. These works contributed to the formation of modern understanding of the vortex effect and the successful beginning of industrial application of vortex apparatuses.

Vortex Effect, Vortex Power

2018 ◽  
pp. 500-533
Author(s):  
Serebryakov Rudolf ◽  
Vladimir Vasilyevich Biryuk ◽  
Vyacheslav Volov
Keyword(s):  
Renewable Energy ◽  
Pressure Gradient ◽  
Thermal Energy ◽  
Nonlinear Effects ◽  
Continuous Media ◽  
Swirling Flows ◽  
Secondary Flows ◽  
Vortex Effect ◽  
Complex Phenomena ◽  
Physical Phenomena

One of the non-traditional types of renewable energy is vortex energy, which arises when swirling flows of continuous media (e.g., liquid and gas) are formed and which can be converted into thermal energy, work, and also used to raise the temperature in some systems or to create a pressure gradient. Vortex structures are systematically found in many physical processes. In recent years, new aspects of studying the vortex have been considered. These aspects are associated with physical phenomena, which indicate the occurrence of nonlinear effects in liquid media. Vortex flows of continuous media are one of the most important and complex phenomena in the mechanics of liquids and gases. They are characterized by specific manifestations that are fundamentally different from the axial properties of the motion of the medium, such as the appearance of secondary flows.

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