EXPERIMENTAL STUDY OF THERMAL EFFECTS IN COOLING OF CIRCULAR CYLINDER IN LOCK-ON CONDITIONS
The paper presents a simple method for determining the phenomenon of unsteady thermal effects in cooling of circular cylinder. The research has been undertaken in order to explain the thermoaerodynamic processes, which are characterized by the turbulent structure of the flow around a stationary rigi...
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| Format: | Article |
| Language: | English |
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Lublin University of Technology
2018-06-01
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| Series: | Advances in Sciences and Technology |
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| Online Access: | http://www.journalssystem.com/astrj/Experimental-study-of-thermal-effects-in-cooling-of-circular-cylinder-in-lock-on,78517,0,2.html |
| _version_ | 1811317768578924544 |
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| author | Adam Gnatowski Marcin Sosnowski Anna Pajdak Jacek Sobczyk |
| author_facet | Adam Gnatowski Marcin Sosnowski Anna Pajdak Jacek Sobczyk |
| author_sort | Adam Gnatowski |
| collection | DOAJ |
| description | The paper presents a simple method for determining the phenomenon of unsteady thermal effects in cooling of circular cylinder. The research has been undertaken in order to explain the thermoaerodynamic processes, which are characterized by the turbulent structure of the flow around a stationary rigid heated cylinder cooled by the oscillating flow. The forced convection of heat occurs in the presence of not only random velocity fluctuation but also in the conditions of periodical forms of motion caused mainly by the process of vortex going down and externally formed oscillations of the inflow. The Nusselt number was evaluated at various frequencies of disturbances of the inlet velocity field, especially in lock-on conditions, on the surface of the circular cylinder versus angular location Θ = 0 180. The subject of the study focuses on the analysis of current state of the problem and development of the method to measure and calculate basic values that characterize unsteady processes of thermal effects on the circular cylinder surface and indication of the directions of further work. |
| first_indexed | 2024-04-13T12:14:05Z |
| format | Article |
| id | doaj.art-ae2f402413a1489e83e7844af948c7c0 |
| institution | Directory Open Access Journal |
| issn | 2080-4075 2299-8624 |
| language | English |
| last_indexed | 2024-04-13T12:14:05Z |
| publishDate | 2018-06-01 |
| publisher | Lublin University of Technology |
| record_format | Article |
| series | Advances in Sciences and Technology |
| spelling | doaj.art-ae2f402413a1489e83e7844af948c7c02022-12-22T02:47:24ZengLublin University of TechnologyAdvances in Sciences and Technology2080-40752299-86242018-06-01122425110.12913/22998624/7851778517EXPERIMENTAL STUDY OF THERMAL EFFECTS IN COOLING OF CIRCULAR CYLINDER IN LOCK-ON CONDITIONSAdam Gnatowski0Marcin Sosnowski1Anna Pajdak2Jacek Sobczyk3Czestochowa University of Technology, Faculty of Mechanical Engineering and Computer Science, 21 Armii Krajowej Av, 42-200 Czestochowa, PolandJan Dlugosz University in Czestochowa, Faculty of Mathematics and Natural Sciences, 13/15 Armii Krajowej Av, 42-200 Czestochowa, PolandThe Strata Mechanics Research Institute of the Polish Academy of Sciences, 27 Reymonta St., 30-059 Krakow, PolandThe Strata Mechanics Research Institute of the Polish Academy of Sciences, 27 Reymonta St., 30-059 Krakow, PolandThe paper presents a simple method for determining the phenomenon of unsteady thermal effects in cooling of circular cylinder. The research has been undertaken in order to explain the thermoaerodynamic processes, which are characterized by the turbulent structure of the flow around a stationary rigid heated cylinder cooled by the oscillating flow. The forced convection of heat occurs in the presence of not only random velocity fluctuation but also in the conditions of periodical forms of motion caused mainly by the process of vortex going down and externally formed oscillations of the inflow. The Nusselt number was evaluated at various frequencies of disturbances of the inlet velocity field, especially in lock-on conditions, on the surface of the circular cylinder versus angular location Θ = 0 180. The subject of the study focuses on the analysis of current state of the problem and development of the method to measure and calculate basic values that characterize unsteady processes of thermal effects on the circular cylinder surface and indication of the directions of further work.http://www.journalssystem.com/astrj/Experimental-study-of-thermal-effects-in-cooling-of-circular-cylinder-in-lock-on,78517,0,2.htmlthermal effectscircular cylinder |
| spellingShingle | Adam Gnatowski Marcin Sosnowski Anna Pajdak Jacek Sobczyk EXPERIMENTAL STUDY OF THERMAL EFFECTS IN COOLING OF CIRCULAR CYLINDER IN LOCK-ON CONDITIONS Advances in Sciences and Technology thermal effects circular cylinder |
| title | EXPERIMENTAL STUDY OF THERMAL EFFECTS IN COOLING OF CIRCULAR CYLINDER IN LOCK-ON CONDITIONS |
| title_full | EXPERIMENTAL STUDY OF THERMAL EFFECTS IN COOLING OF CIRCULAR CYLINDER IN LOCK-ON CONDITIONS |
| title_fullStr | EXPERIMENTAL STUDY OF THERMAL EFFECTS IN COOLING OF CIRCULAR CYLINDER IN LOCK-ON CONDITIONS |
| title_full_unstemmed | EXPERIMENTAL STUDY OF THERMAL EFFECTS IN COOLING OF CIRCULAR CYLINDER IN LOCK-ON CONDITIONS |
| title_short | EXPERIMENTAL STUDY OF THERMAL EFFECTS IN COOLING OF CIRCULAR CYLINDER IN LOCK-ON CONDITIONS |
| title_sort | experimental study of thermal effects in cooling of circular cylinder in lock on conditions |
| topic | thermal effects circular cylinder |
| url | http://www.journalssystem.com/astrj/Experimental-study-of-thermal-effects-in-cooling-of-circular-cylinder-in-lock-on,78517,0,2.html |
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