Thermal and hydraulic phenomena in boundary layer of minijets impingement on curved surfaces

• Autorzy: Kura T. , Fornalik-Wajs E. , Wajs J.

Identyfikatory

DOI

10.1515/aoter-2018-0008

• Języki publikacji: EN

Abstrakty

EN

Presented work considers flow and thermal phenomena occurring during the single minijet impingement on curved surfaces, heated with a constant heat flux, as well as the array of minijets. Numerical analyses, based on the mass, momentum and energy conservation laws, were conducted, regarding single phase and two-phase simulations. Focus was placed on the proper model construction, in which turbulence and boundary layer modeling was crucial. Calculations were done for various inlet parameters. Initial single minijet results served as the basis for the main calculations, which were conducted for two jet arrays, with flat and curved heated surfaces. Such complex geometries came from the cooling systems of electrical devices, and the geometry of cylindrical heat exchanger. The results, regarding Nusselt number, heated surface temperature, turbulence kinetic energy, production of entropy and vorticity, were presented and discussed. For assumed geometrical parameters similar results were obtained.

Słowa kluczowe

EN

jet impingement; minijets array; boundary layer; entropy generation; Nusselt number

PL

uderzenie; strumień; warstwa przyścienna; generowanie entropii; liczby Nusselta

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN ; Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archives of Thermodynamics
• Rocznik: 2018
• Tom: Vol. 39, no 1
• Strony: 147--166
• Opis fizyczny: Bibliogr. 20 poz., rys., tab., wz.

Twórcy

autor

Kura T.

• AGH University of Science and Technology, Faculty of Energy and Fuels, Department of Fundamental Research in Energy Engineering, 30 Mickiewicza Avenue, 30-059 Krakow, Poland

autor

Fornalik-Wajs E.

• AGH University of Science and Technology, Faculty of Energy and Fuels, Department of Fundamental Research in Energy Engineering, 30 Mickiewicza Avenue, 30-059 Krakow, Poland

autor

Wajs J.

• Gdansk University of Technology, Faculty of Mechanical Engineering, Department of Energy and Industrial Apparatus, Narutowicza 11/12, 80-233 Gdańsk, Poland

Bibliografia

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Uwagi

EN

The present work was supported by the Polish Ministry of Science (Grant AGH No. 15.11.210.390) and by PLGrid Infrastructure.

PL

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