Yazar "Khalifa, Hamiden Abd El-Wahed" seçeneğine göre listele

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    Öğe
    Characteristics of heat transportation in MHD flow of chemical reactive micropolar nanofluid with moving slip conditions across stagnation points
    (Elsevier, 2024) Jawad, Muhammad; Khalifa, Hamiden Abd El-Wahed; Shaaban, Abeer A.; Akgul, Ali; Riaz, Muhammad Bilal; Sadiq, Naeem
    In current study, the steady electrically conducting flow of micropolar nanofluid past a porous stretched surface across stagnation points is investigated. For motivation of problem, the impressions of the nonlinear thermal radiation and convectively heated have been analyzed. In additions, the influence of thermophoresis and heat transfer are the part of this study. The governing firm of PDEs are converted to a system of nonlinear and coupled ODEs using the similarity approach. Moreover, the resulting problem is numerically integrated with the aid of shooting approach by utilizing the bvp4c programmer of MATLAB. The numerical outcomes are calculated using various physical parameter values and contrasted with previously published results. Numerical values of the physical quantities like velocity, micropolar rotation, temperature and concentration profile for involving parameters such as Prandtl number Pr, radiation R, slip parameter alpha, thermophoresis Nt, suction/injection velocity fw, Brownian motion Nb, magnetic parameter M and Lewis number Le are also computed and deliberated in this consideration.
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    Öğe
    Computational analysis of heat transport dynamics in viscous dissipative blood flow within a cylindrical shape artery through influence of autocatalysis and magnetic field orentation
    (Elsevier, 2024) AL Garalleh, Hakim; Darvesh, Adil; Abd El-Rahman, Magda; Akgul, Ali; Sanchez-Chero, Manuel; Khalifa, Hamiden Abd El-Wahed; Ali, H. Elhosiny
    Nanofluids consisting of tetra nanoparticles are crucial in bio medical sciences due to their improved thermal transport characteristics. The advanced tailored properties of tera nanoparticles make them useful in several medical interventions, such as hyperthermia treatment, where the targeted tissue can be heated more efficiently, leading to better treatment outcomes. The current study investigates the heat transfer enhancement in a hemodynamic system using tetra nanoparticles. The physical configuration of the blood flow is assumed with in a permeable cylindrical shape stenosed artery. The model incorporates the Carreau model with inclusion of diverse factors such as, exponential space-based heat source, viscous dissipation, infinite shear rate and permeability of surface. Additionally, impact of chemical reaction (autocatalysis) and magnetohydrodynamic (MHD) consequences is also integrated into the system. The framed partial differential equations (PDEs) generated by physical problem are converted into new dimensionless form of an ordinary differential system (ODEs). Bvp4c MATLAB procedure is fetched for numerical investigation. It is observed that, velocity profile of the fluid is reduced due to intensification in inclined magnetic effect, whereas autocatalysis effect promotes the concentration of nanoparticles in blood flow mixture, which increases the temperature field of fluid. Furthermore, augmentation in the values of Wassenberg number increased the elasticity in blood which enables it to deform and stretch more readily in reaction to alterations in flow conditions and hence reduction is seen in overall blood flow rate. The results revealed the significance of these integrated factors for accurate modelling of blood flow passing through a stenosed artery, which is crucial in medical interventions.