Yazar "Bilal, S." seçeneğine göre listele

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    Dynamics of chemically reactive Jeffery fluid embedded in permeable media along with influence of magnetic field on associated boundary layers under multiple slip conditions
    (Elsevier, 2021) Bilal, S.; Mamatha, S. U.; Raju, C. S. K.; Rao, B. Madhusudhana; Malik, M. Y.; Akgul, Ali
    The prime goal of the current pagination is to scrutinize behavior of mixed convective Jeffrey nanoliquid (JNL) flowing over an exponentially stretching sheet by using possessions of radiative energy flux, non-uniformly heated source/sink, slip boundary condition, and modified Arrhenius energy function. The governing physical expression (PDEs) are converted in view of similar ODE's. Solution of constructed problem is heeded by employing shooting technique. Graphical and tabular results are designed for assisting flow, opposing flow and forced convection cases to scrutinize the performance of miscellaneous significant variables. The results attained exhibited worthy agreement with the preceding remarkable works. The noteworthy finding is Opposing flow case demonstrations higher temperature and concentration profile compared to assisting flow and forced convection case.
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    Finite difference simulations for magnetically effected swirling flow of Newtonian liquid induced by porous disk with inclusion of thermophoretic particles diffusion
    (Elsevier, 2022) Bilal, S.; Shah, Imtiaz Ali; Akgul, Ali; Nisar, Kottakkaran Sooppy; Khan, Ilyas; Khashan, M. Motawi; Yahia, I. S.
    Heat and mass transfer analysis of viscous liquid flow generated by rotation of disk has generated prodigious interest due to promising utilizations in numerous processes such as thermal energy generation systems, turbine rotators, geothermal energy preservations, chemical processing, medicinal instrumentations, computing devices and so forth. In view of such extraordinary utilizations in numerous engineering procedures existent exertion is excogitated to disclose flowing phenomenon over rotating disk. To raise the importance of current analysis influential physical aspects like magnetic field, permeability, Dufour and Soret diffusion phenomenon are also incorporated. Subsequently, flow field distributions are analyzed for suction and injection cases. Modelling is structured via PDE's by obliging constitutive conservation laws. Boundary layer approach is executed to reduce complexity of attained partial differential system. Transformations developed by Karman are implemented to convert developed differential framework into ODE's. Implicitly finite differenced technique known as Keller Box is engaged to find solution of coupled intricate high order ordinary differential equations. Influence of flow controlling parameters on associated distributions are revealed through graphical and tabular representations. The related quantities of engineering interest like coefficients of wall drag force, along radial and tangential directions are also computed. Credibility of presently computed results is established by constructing comparison with previously published literature. It is inferred that magnetic strength parameter enhances tangential and radial components of velocity whereas contrary trend is depicted in axially directed velocity. In addition, temperature and momentum distributions show up surging attribute versus magnetic field parameter. All associated profiles have exhibited decrementing aspects against suction parameter. It is also revealed that increment in Soret tends to produce depreciation in temperature profile whereas concentration distribution is enhanced. (C) 2021 THE AUTHORS. Published by Elsevier BV on behalf of Faculty of Engineering, Alexandria University.
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    Onset about non-isothermal flow of Williamson liquid over exponential surface by computing numerical simulation in perspective of Cattaneo Christov heat flux theory
    (Elsevier, 2022) Bilal, S.; Shah, M. Imtiaz; Khan, Noor Zeb; Akgul, Ali; Nisar, Kottakkaran Sooppy
    In view of increaing significance of non-isothermal flow of non-Newtonian fluids over exponential surfaces in numerous industrial and technological procedures such as film condensation, extrusion of plastic sheets, crystal growth, cooling process of metallic sheets, design of chemical processing equipment and various heat exchangers, and glass and polymer industries current disquisition is addressed. For comprehensive examination Williamson model expressing the attributes of shear thickening and thinning liquids is taken under consideration. The physical aspects of magnetic field applied in transverse direction to flow is also accounted. Heat transfer aspects are incorporated and analyzed by employing Cattaneo-Christov heat flux model. Mathematical formulation of problem is conceded in the form of PDE's by implementing boudary layer approach and later on converted into ODE's with the assistance of transformation procedure. The resulting equations are solved numerically using shooting and Runge-Kutta methods. Impact of involved parameters on flow distributions is displayed through graphs. From the analysis it is inferred that Cattaneo Christov heat flux law exhibits hyperbolic equation which follows the causality principle and make the problem more compatible to real world applications. It is also deduced that magnetic field suppresses the velocity field and associated boundary layer region. Decrease in temperature profile and heat transfer coefficient is found against inciting magnitude of thermal relaxation parameter. Substantial decrease in velocity is found against increasing magnitude of Williamson fluid parameter and magnetic field parameter whereas skin friction coefficient increments. Confir-mation about present findings is executed by making comparison with existing literature.(c) 2021 THE AUTHORS. Published by Elsevier BV on behalf of Faculty of Engineering, Alexandria University. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).