Numerical analysis and optimization of natural convection heat transfer in inclined square cavities with sinusoidal heating elements

• Autorzy: Hamza Mohammed K. , Mahdi Qusai Adnan , Idzikowski Adam , Mazur Magdalena

Identyfikatory

DOI

10.30657/pea.2024.30.46

• Języki publikacji: EN

Abstrakty

EN

This study presents a numerical analysis of natural convection heat transfer within inclined square cavities featuring sinusoidal heating elements. The analysis, conducted using a finite volume approach implemented in ANSYS 16.0, aims to estimate flow and heat regimes under steady-state conditions. Grid-independent analyses were performed to ensure numerical accuracy. The vertical walls of the enclosure were maintained at a cold temperature, while the other two walls were perfectly insulated. Key parameters investigated include Rayleigh numbers (104, 105, 106), corrugation numbers (3, 5, and 7), amplitude values (0.1, 0.3 and 0.5), and enclosure inclination angles (δ = 0°, 15°, 30°, 45°, 60°, 75°). The sinusoidal element's diameter to enclosure length ratio was set at 0.4, and fluid properties were assumed constant with a Prandtl number of 7.0. Results were illustrated using isothermal and flow lines, with heat transfer discussed in terms of local and average Nusselt numbers. Findings indi-cate that at Ra = 106, local Nusselt numbers exhibited a sinusoidal distribution influenced by corruga-tion and amplitude, with a 50% increase in local Nusselt number as amplitude increased from 0.1 to 0.5. Average Nusselt number enhancements were observed with higher corrugation numbers and wave amplitudes, while the number and size of eddies were sensitive to Rayleigh numbers. Enclosure incli-nation significantly affected the formation of vortices, particularly at angles of 60° and 75°.

Słowa kluczowe

EN

numerical optimization; heat transfer management; insulated walls; finite volume method; sinusoidal and non-sinusoidal; simplic methods; isothermal lines

PL

optymalizacja numeryczna; zarządzanie wymianą ciepła; ściany izolowane; metoda objętości skończonej; sinusoidalne i niesinusoidalne; metody uproszczone; linie izotermiczne

• Wydawca: Oficyna Wydawnicza Stowarzyszenia Menedżerów Jakości i Produkcji
• Czasopismo: Production Engineering Archives
• Rocznik: 2024
• Tom: Vol. 30, Iss. 4
• Strony: 491--500
• Opis fizyczny: Bibliogr. 30 poz., rys., tab.

Twórcy

autor

Hamza Mohammed K.

• Mechanical Engineering / College of Materials Engineering -Department of Polymer and Petrochemicals Industrials Engineering/ University of Babylon - Babylon City – Hilla – Iraq

• https://orcid.org/0000-0001-6678-6155

autor

Mahdi Qusai Adnan

• Mechanical Engineering / College of Materials Engineering -Department of Polymer and Petrochemicals Industrials Engineering/ University of Babylon - Babylon City – Hilla – Iraq

• https://orcid.org/0000-0003-4597-3204

autor

Idzikowski Adam

• Department of Production Engineering and Safety, Czestochowa University of Technology, Częstochowa, Poland

• https://orcid.org/0000-0003-1178-8721

autor

Mazur Magdalena

• Department of Production Engineering and Safety, Czestochowa University of Technology, Częstochowa, Poland

• https://orcid.org/0000-0003-3515-8302

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr POPUL/SP/0154/2024/02 w ramach programu "Społeczna odpowiedzialność nauki II" - moduł: Popularyzacja nauki (2025).