Experimental study of thermal effects in cooling a circular cylinder in lock-on conditions

• Autorzy: Gnatowski Adam , Sosnowski Marcin , Pajdak Anna , Sobczyk Jacek

Identyfikatory

DOI

10.12913/22998624/78517

• Języki publikacji: EN

Abstrakty

EN

The paper presents a simple method for determining the phenomenon of unsteady thermal effects in cooling a 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.

Słowa kluczowe

EN

thermal effects; circular cylinder

PL

efekt termiczny; okrągły cylinder

• Wydawca: Lublin University of Technology ; Polish Society of Ecological Engineering (PTIE), Branch of PTIE in Lublin
• Czasopismo: Advances in Science and Technology. Research Journal
• Rocznik: 2018
• Tom: Vol. 12, no 2
• Strony: 42--51
• Opis fizyczny: Bibliogr. 27 poz., fig.

Twórcy

autor

Gnatowski Adam

• Czestochowa University of Technology, Faculty of Mechanical Engineering and Computer Science, 21 Armii Krajowej Av, 42-200 Czestochowa, Poland

autor

Sosnowski Marcin

• an Dlugosz University in Czestochowa, Faculty of Mathematics and Natural Sciences, 13/15 Armii Krajowej Av, 42-200 Czestochowa, Poland

autor

Pajdak Anna

• The Strata Mechanics Research Institute of the Polish Academy of Sciences, 27 Reymonta St., 30-059 Krakow, Poland

autor

Sobczyk Jacek

• The Strata Mechanics Research Institute of the Polish Academy of Sciences, 27 Reymonta St., 30-059 Krakow, Poland

Bibliografia

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).