Please use this identifier to cite or link to this item: http://prr.hec.gov.pk/jspui/handle/123456789/14854
Title: Cattaneo-Christov Heat Flux Model For Magneto Hydrodynamic Non-Newtonian Nanofluids Flow with Homogeneous-Heterogeneous Reaction
Authors: Saeed, Anwar
Keywords: Physical Sciences
Mathematics
Issue Date: 2020
Publisher: Abdul Wali Khan University, Mardan
Abstract: In the current world, nanoscience is in the attention of scientists and investigators due to its utilization in industries. For example, the usage of nanoliquids as heat flow control in the heat valves by use of nanoliquids, cooling down the radiator temperature of vehicles, the coolant in nuclear reactors, reduce the heat from computer processors, etc. In medical industries, cancer patients are treated with the support of drugs and radiations that are carried in operators assembled of iron base nanoliquids. Recently Nanofluids have attracted the focus of many scientists and researchers because of the shear many applications at the domestic and industrial levels. Nanofluids are enforced to intensify the thermal performance of such fluids which acts as the base liquid (ethylene glycol, lubricant oil, and water). In this thesis modeling of the nanofluid flow problem with the Cattaneo–Christov heat flux model for magnetohydrodynamic non-Newtonian nanofluids flow with homogeneousheterogeneous reaction are analyzed. A Magnetohydrodynamic steady flow of three combined nanofluids (Jefferey, Maxwell, and Oldroyd-B) over a stretched surface are investigated. The surface is considered as linear. The Cattaneo-Christov heat flux is considered to study the relaxation properties of the fluid flow. The influence of homogeneous-heterogeneous reactions (active for autocatalysts and reactants) is taken into account. The modeled problem is solved analytically by the homotopy analysis method. The impressions of the magnetic field, Prandtl number, thermal relaxation time, Schmidt number, homogeneous reaction strength, and heterogeneous reaction strength are pondered through graphs. Also, the impacts of these parameters on skin friction, Nusselt number, and Sherwood number are presented through tables. The comparison between analytical and numerical methods is presented graphically and numerically as well. In chapter one incorporates the investigation of anticipating thoughts and rudimentary phrasings having exchange identified with the thought about issues in the thesis. An outline of a couple of critical results that are utilized in this thesis has additionally been talked about. It covers the depiction of Newtonian and non-Newtonian liquids, nanofluids, the thin film flows, carbon nanotubes going with mathematical models, essential conditions, and models. The essential thought of HAM is additionally given. A Literature review of the work is given in chapter 02. Chapter 03 is based on an analysis of the MHD flow of three combined nanofluids (Maxwell, Oldroyd-B, and Jeffrey) over a linearly stretching surface. The present model composed of x Cattaneo-Christov heat flux. The impact of homogeneous-heterogeneous reactions is taken in this model. Boundary layer methodology is used in the mathematical expansion. The effects of dimensionless parameters on the liquid stream are introduced through graphs and tables. In chapter 04, the three-dimensional thin-film Casson fluid flow over an inclined steady rotating plane was examined. The thin film flow was thermally radiated and the suction/injection effect was also considered. By the similarity variables, the PDEs were converted into ODEs. The obtained ODEs were solved by the HAM with an association of the MATHEMATICA program. In chapter 05, entropy generation in nanofluid based SWCNTs and MWCNTs over a permeable extending sheet and radiative heat flux impacts are analyzed. It is desired that the current study contributes as a boost for sculpting more advanced Magnetohydrodynamic Nanofluid flows notably in the cooling of microchips, nuclear reactors, in fuels, extraction of geothermal power, micro actuation process and biomedicines. Chapter 06 deals with the investigation of the thermal characteristics of the DarcyForchheimer hydromagnetic hybrid nanofluid flow through a stretching cylinder. The model equations which consist of continuity, momentum, and energy equations are converted to a set of coupled ordinary differential equations through similarity variables transformations and appropriate boundary conditions. Brownian motion and Thermophoresis effects are mainly focused on this work. The impacts of some interesting parameters over velocity, temperature, and concentration profiles are studied graphically. The present study will help understand the thermal characteristics of heat transfer liquids. In chapter 7, we gave the conclusion of the detail. Key Words: Nanofluid; Oldroyd-B Fluid; Heat Flux; MHD; Casson Nanofluid; Thin Film; Thermal Radiation; Magnetic Field; Entropy; Carbon Nanotubes; Molecular Liquids; Electric Field; Hybrid Nanofluid; Brownian Motion; Thermophoresis Effect; HAM and Numerical Technique.
Gov't Doc #: 20191
URI: http://prr.hec.gov.pk/jspui/handle/123456789/14854
Appears in Collections:PhD Thesis of All Public / Private Sector Universities / DAIs.

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