Yazar "Hussein, Yousif Hashim" seçeneğine göre listele

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    A multi-criteria optimization for a radial heat sink with semicircular fins based on the design of experiments approach
    (Elsevier BV, 2025-02) Hussein, Yousif Hashim; Tahseen, Ahmad Tahseen; Akroot, Abdulrazzak; Mithu, M.A.H.; Abdulateef, Ammar M.
    Radial fins play a crucial role in enhancing energy efficiency and supporting sustainable industrial practices by optimizing heat transfer, aligning with the Sustainable Development Goals (SDGs). Addressing the need for high-efficiency systems to reduce greenhouse gas emissions, this study highlights the importance of optimizing factors in a General Factorial Design (GFD). Factors were coded and scaled within the range of +1 to −1, accounting for variations in the units of independent variables. This study utilized the Nusselt number and thermal resistance, along with an effective regression analysis, to develop a novel predictive model. Key performance indicators included R2, adjusted R2, predicted R2, coefficient of variation (CV), and parameter separation from the best-fit results. The proposed model demonstrated remarkable accuracy in predicting the Nusselt number, with values of R2, predicted R2, adjusted R2, and CV at 98.15 %, 97.08 %, 94.87 %, and 2.44 %, respectively. For thermal resistance, the corresponding values were 97.91 % for predicted R2, 96.70 % for adjusted R2, 94.21 % for CV, and 3.33 % for parameter separation. Therefore, it is evident that the proposed model is highly accurate in predicting semicircular radial heat sink performance, offering a robust tool for future heat sink designs and sustainable thermal management systems.
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    Investigation of free convection heat transfer from vertical cylinders with semicircular fins
    (Taylor & Francis Inc, 2023) Hussein, Yousif Hashim; Akroot, Abdulrazzak; Tahseen, Tahseen Ahmad
    In this paper, the effects of three parameters on the thermal performance of the vertical cylinder with semicircular fins was investigated experimentally. The fin shape, fin number and input heat flow on the thermal performance are studied effected. Three different heat sink models (SC-0, SC-40, and SC50) were contrasted in order to choose the best reference model. The result show that the heat transfer coefficient increased up to 30% with SC-0 and SC40, 27% with SC-0 and SC-50, while the thermal resistance of the radial heat sink was demonstrated to be less than that of SC by 17% with SC-40 and less than 19% with SC-50. Additionally, it was found that, the larger number of fins was more effective at dissipating heat than the smaller number of fins, this can be attributed to the heat transfer occurred under natural convection conditions. Finally, to developed Nusselt number correlation with experimental data, the correlation shows the good agreement with experimental data with error less than +/- 5%.