Influence of Critical Flow Rates on Characteristics of Enforced and Shear Flows in Circular Convergent-Divergent Channels

Influence of Critical Flow Rates on Characteristics of Enforced and Shear Flows in Circular Convergent-Divergent Channels

Analysis of the reasons of critical flow rate occurrence in hydraulic tracts of cryogenic machines has been carried out. Theoretical expressions have been derived to calculate critical velocities in a boiling multiphase medium. Applied to hybrid fluid-film bearings with throttles for lubricant suppl...

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Main Authors: Leonid A. Savin, Alexey V. Kornaev, Elena P. Kornaeva
Format: Article
Language:English
Published: Hindawi Limited 2017-01-01
Series:International Journal of Rotating Machinery
Online Access:http://dx.doi.org/10.1155/2017/8761375
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spelling doaj-edee035726704f65ac65bd39841711ec2020-11-25T01:11:45ZengHindawi LimitedInternational Journal of Rotating Machinery1023-621X1542-30342017-01-01201710.1155/2017/87613758761375Influence of Critical Flow Rates on Characteristics of Enforced and Shear Flows in Circular Convergent-Divergent ChannelsLeonid A. Savin0Alexey V. Kornaev1Elena P. Kornaeva2Department of Mechatronics and International Engineering, Orel State University Named after I. S. Turgenev, Orel 302026, RussiaMechatronics and International Engineering Research Center, Orel State University Named after I. S. Turgenev, Orel 302026, RussiaModeling of Hydro and Mechanical Systems Research Laboratory, Orel State University Named after I. S. Turgenev, Orel 302026, RussiaAnalysis of the reasons of critical flow rate occurrence in hydraulic tracts of cryogenic machines has been carried out. Theoretical expressions have been derived to calculate critical velocities in a boiling multiphase medium. Applied to hybrid fluid-film bearings with throttles for lubricant supply, a mathematical model has been developed to calculate pressure distribution and hydrodynamic reaction forces of a lubricant considering the influence of steam content and critical flows in throttle devices. Numerical results of phase state and load capacity calculations of a hybrid fluid-film bearing under lubricant’s critical flow rates condition have been presented.http://dx.doi.org/10.1155/2017/8761375
collection DOAJ
language English
format Article
sources DOAJ
author Leonid A. Savin
Alexey V. Kornaev
Elena P. Kornaeva
spellingShingle Leonid A. Savin
Alexey V. Kornaev
Elena P. Kornaeva
Influence of Critical Flow Rates on Characteristics of Enforced and Shear Flows in Circular Convergent-Divergent Channels
International Journal of Rotating Machinery
author_facet Leonid A. Savin
Alexey V. Kornaev
Elena P. Kornaeva
author_sort Leonid A. Savin
title Influence of Critical Flow Rates on Characteristics of Enforced and Shear Flows in Circular Convergent-Divergent Channels
title_short Influence of Critical Flow Rates on Characteristics of Enforced and Shear Flows in Circular Convergent-Divergent Channels
title_full Influence of Critical Flow Rates on Characteristics of Enforced and Shear Flows in Circular Convergent-Divergent Channels
title_fullStr Influence of Critical Flow Rates on Characteristics of Enforced and Shear Flows in Circular Convergent-Divergent Channels
title_full_unstemmed Influence of Critical Flow Rates on Characteristics of Enforced and Shear Flows in Circular Convergent-Divergent Channels
title_sort influence of critical flow rates on characteristics of enforced and shear flows in circular convergent-divergent channels
publisher Hindawi Limited
series International Journal of Rotating Machinery
issn 1023-621X
1542-3034
publishDate 2017-01-01
description Analysis of the reasons of critical flow rate occurrence in hydraulic tracts of cryogenic machines has been carried out. Theoretical expressions have been derived to calculate critical velocities in a boiling multiphase medium. Applied to hybrid fluid-film bearings with throttles for lubricant supply, a mathematical model has been developed to calculate pressure distribution and hydrodynamic reaction forces of a lubricant considering the influence of steam content and critical flows in throttle devices. Numerical results of phase state and load capacity calculations of a hybrid fluid-film bearing under lubricant’s critical flow rates condition have been presented.
url http://dx.doi.org/10.1155/2017/8761375
work_keys_str_mv AT leonidasavin influenceofcriticalflowratesoncharacteristicsofenforcedandshearflowsincircularconvergentdivergentchannels
AT alexeyvkornaev influenceofcriticalflowratesoncharacteristicsofenforcedandshearflowsincircularconvergentdivergentchannels
AT elenapkornaeva influenceofcriticalflowratesoncharacteristicsofenforcedandshearflowsincircularconvergentdivergentchannels
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