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

Treść / Zawartość
Identyfikatory
Warianty tytułu
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.
Rocznik
Strony
147--166
Opis fizyczny
Bibliogr. 20 poz., rys., tab., wz.
Twórcy
autor
  • 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
  • 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
  • Gdansk University of Technology, Faculty of Mechanical Engineering, Department of Energy and Industrial Apparatus, Narutowicza 11/12, 80-233 Gdańsk, Poland
Bibliografia
  • [1] Landelle A., Tauveron N., Haberschill P., Revellin R., Colasson S.: Organic Rankine cycle design and performance comparison based on experimental database. Appl. Energ. 204(2017), 1172–1187.
  • [2] Wajs J., Mikielewicz D., Bajor M., Kneba Z.: Experimental investigation of domestic micro-CHP based on the gas boiler fitted with ORC module. Arch. Thermodyn. 37(2016), 3, 79–93.
  • [3] Wajs J., Mikielewicz D., Fornalik-Wajs E.: Cylindrical jet heat exchanger dedicated to heat recovery, especially from low temperature waste sources. Patent PL224494, 2013 (in Polish).
  • [4] Wajs J., Mikielewicz D., Fornalik-Wajs E., Bajor M.: Recuperator with microjet technology as a proposal for heat recovery from low-temperature sources. Arch. Thermodyn. 36(2015), 4, 48–63.
  • [5] Wajs J., Mikielewicz D., Fornalik-Wajs E., Bajor M.: High performance tubular heat exchanger with minijet heat transfer enhancement. Heat Transfer Eng. doi: 10.1080/01457632.2018.1442369
  • [6] Tong A.Y.: A numerical study on the hydrodynamics and heat transfer of a circular liquid jet impinging onto a surface. Numer. Heat Tr. A-Appl. 44(2003), 1, 1–19.
  • [7] Berberović E., Šikalo Š.: Computational modelling and simulation of nonisothermal free-surface flow of a liquid jet impinging on a heated surface. Procedia Engineering 100(2015), 115-124.
  • [8] Stevens J., Webb B.W.: Measurements of the free surface flow structure under an impinging, free liquid jet. J. Heat Trans-T. ASME 114(1992), 1, 79–84.
  • [9] Liu X., Lienhard J.H., Lombara J.S.: Convective heat transfer by impingement of circular liquid jets. J. Heat Trans-T. ASME 113(1991), 571–582.
  • [10] Zuckerman N., Lior N.: Jet impingement heat transfer: physics, correlations, and numerical modeling. Adv. Heat Transfer 39(2006), 565–631.
  • [11] Choo K., Friedrich B.K., Glaspell A.W., Schilling K.A.: The influence of orifice-to-plate spacing on heat transfer and fluid flow of submerged jet impingement. Int. J. Heat Mass Tran. 97(2016), 66–69.
  • [12] Yasaswy N.S., Saroj S., Hindasageri V., Prabhu S.V.: Local heat transfer distribution of an impinging air jet through a crossflow. Int. J. Therm. Sci. 79(2014), 250–259.
  • [13] Lee J., Ren Z., Ligrani P., Fox M.D., Moon H.-K.: Crossflows from jet array impingement cooling: Hole spacing, target plate distance, Reynolds number effects. Int. J. Therm. Sci. 88(2015), 7–18.
  • [14] Draksler M., Končar B., Cizelj L., Ničeno B.:Large Eddy Simulation of multiple impinging jets in hexagonal configuration – Flow dynamics and heat transfer characteristics. Int. J. Heat Mass Tran. 109(2017), 16–27.
  • [15] ANSYS, Inc.: ANSYS FLUENT Theory Guide, Release 14.5. Canonsburg 2012.
  • [16] Brdlik P.M., Savin V.K.: Heat transfer between an axisymmetric jet and a plate normal to the flow. J. Eng. Phys. 8(1965), 2, 91–98.
  • [17] Womac D.J., Ramadhyani S., Incropera F.P.: Correlating equations for impingement cooling of small heat sources with single circular liquid jets. J. Heat TransT. ASME 115(1993), 1, 106–115.
  • [18] Robinson A.J., Schnitzler E.: An experimental investigation of free and submerged miniature liquid jet array impingement heat transfer. Exp. Therm. Fluid Sci. 32(2007), 1, 1–13.
  • [19] Fabbri M., Dhir V.K.: Optimized heat transfer for high power electronic cooling using arrays of microjets. J. Heat Trans-T. ASME 127(2005), 7, 760–769.
  • [20] Bejan A.: Entropy minimization: the new thermodynamics of finite-size devices and finite-time processes. J. Appl. Phys. 79(1996), 3, 1191–1218.
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).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-4148f92b-c884-409a-b352-543e8202fbc2
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