Modeling and interpretation of peristaltic transport in single wall carbon nanotube flow with entropy optimization and Newtonian heating

• Published in: Computer methods and programs in biomedicine 2020-08, Vol.192, p.105435, Article 105435
• Main Authors: Farooq, Shahid, Khan, M. Ijaz, Riahi, Anis, Chammam, Wathek, Khan, W.A.
• Format: Article
• Language: English
• Subjects: Entropy; Entropy generation; Heat generation/absorption; Heating; Hydrodynamics; Models, Biological; Models, Theoretical; Nanotubes, Carbon; Newtonian heating; Nonlinear mixed convection; Peristalsis; Peristaltic flow; Porous medium; Single wall CNTs; Thermal Conductivity
• ISSN: 0169-2607; 1872-7565
• DOI: 10.1016/j.cmpb.2020.105435

•Entropy optimized peristaltic flow is discussed through non-uniform asymmetric channel.•Both types of CNTs are considered i.e., single and multi-walls carbon nanotubes.•Total entropy rate is calculated through implementation of second law of thermodynamics.•Lubrication approach is used to obtain the simplified form of complex flow expressions. Due to some special characteristics like the effective thermal conductivities, appropriate mechanical features, and superior electrical properties, carbon nanostructures have been known as the proper materials to reach the desired characteristics of fluids. In the recent past fluid flows through peristaltic mechanism subject to carbon nanotubes are utilized to handle the overcome of industrial and physiological materials thermal properties. Due to rich thermal characteristics nanotubes are used into basic industrial materials to improve the required ability of thermal properties of these industrial materials. Thus various kinds of nanoparticles e.g. aluminum, copper, zinc oxides and carbon nanotubes are significantly utilized to increase the thermal abilities of base liquids. Because of the several significant special qualities such as improved thermal conductivities, applicable mechanical structures, and rich electrical properties, CNTs have been acknowledged as the accurate tools to reach the wanted features of fluids, due to such abilities CNTs are high demanding research topic in all domains. Keeping such efficiencies of CNTs in notice, this analysis is prepared for peristalsis of carbon nanotubes through non-uniform asymmetric channel. Flow mechanism is modeled in view of conservation principles under desired assumptions likely porous medium, non-linear mixed convection, heat generation absorption and Newtonian heating. Rate of total entropy is evaluated by using thermodynamics second law. Lubrication approach utilized here to attain the simplified form of the complex flow expressions. The pressure gradient, velocity along axial direction, temperature, effective heat transfer rate and entropy expressions subject to boundary conditions are evaluated numerically via built-in-Shooting procedure. Furthermore these numerical results are used to sketch the variations of all the above mentioned quantities against the pertinent parameters of interest. According to physical discussion temperature reduces for heat absorption case and enhances for heat generation case. Impact of Prandtl number on entropy indicates that en