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1 [CT150]

[CT150]

[01509] Hydromagnetic Hybrid Nanofluid Flow Over a Rotating Stretching Disk

Session Date & Time : 2E (Aug.22, 17:40-19:20)
Type : Contributed Talk
Abstract : The research aim in the this article is to study the effect of magnetic field on the unsteady flow and heat transfer of an incompressible nanofluid due to a rotating disc. In addition, the flow is taken to be in a Darcy-Forchheimer porous medium. The governing set of highly non-linear PDEs are converted into set of highly non-linear ODEs using suitable similarity transformations. The system consisting of non-linear ODEs is numerically solved by the Spectral Quasi Linearization Method (SQLM). The solutions for the local skin friction along the radial direction, local skin friction along tangential direction, and the local heat transfer rate at the surface of the disc for different values of the suitable parameters are also obtained. The results of dimensionless velocity and temperature profiles are shown graphically where the values of local skin-friction coefficients and the heat transfer coefficients are presented in tabular form. A statistical analysis in the form of regression analysis is also performed to estimate the skin-friction and heat transfer coefficients.
Classification : 76W05, 76S05
Author(s) :
- Raj Nandkeolyar (Department of Mathematics, National Institute of Technology Jamshedpur, Jamshedpur)
- Premful Kumar (Department of Mathematics, National Institute of Technology Jamshedpur, Jamshedpur)

[02697] Hydromagnetic Flow with Dissipative and Radiative Heat Transfer over an Inclined Rotating Disk

Session Date & Time : 2E (Aug.22, 17:40-19:20)
Type : Contributed Talk
Abstract : The goal of the research presented in this paper is to examine how a magnetic field affects the unsteady flow of an incompressible nanofluid over a spinning disc that is inclined and stretched while the flow is embedded in a non-Darcy porous medium. Furthermore, the heat transmission mechanism takes into account Joule heating and viscous dissipation. By imposing thermal radiation to enhance the heat transmission system under the effects of convection, the current article is made more realistic. A set of nonlinear partial differential equations and associated boundary conditions define the mathematical problem. Using an appropriate similarity transformation, the mathematical model is converted into a set of nonlinear ordinary differential equations with boundary conditions, which are then solved numerically by the Spectral Quasi Linearization Method (SQLM). Graphs and tables for various varying flow parameters illustrate the full results for the exploration of dimensionless velocity and temperature. Regression analysis is used to statistically estimate the local Nusselt number and the skin friction coefficients. The major outcomes of this article are mentioned such as when the magnetic parameter is increased the flow regime in $r$ and $\theta$ directions decreases due to lorentz force. With the variation of Forchhiemer number the fluid flow in both directions $r$ and $\theta$ decreases because of inertia coefficient increases. Increasing the magnetic parameter and Eckart number the temperature of the fluid increases due to high resistance on the fluid particles produce the heat in flow regime. By quadratic regression analysis, we have found that $\lambda$, $M$ are significant for $C_{f}$, $A$ and $Fr$ are significant for $C_{g}$ while $R$ and $Bi$ are significant for $Nu$. On the basis of $p$ values.
Classification : 76W05, 76S05
Author(s) :
- Premful Kumar (Department of mathematics, National Institute Of Technology Jamshedpur, Jamshedpur)

[01143] Mathematical Modelling of electrokinetic transport and translocation of dielectric particle within a bipolar Nanopore

Session Date & Time : 2E (Aug.22, 17:40-19:20)
Type : Contributed Talk
Abstract : The DNA/RNA sequencing in nanopore relies on the accuracy in the measurement of ionic current. We develop a mathematical model for studying the ionic transport and the translocation of dielectric particle within the nanopore. For this part, a set of coupled, nonlinear PDEs (Laplace, Poisson, Nernst-Plank, Navier-Stokes eqs) are solved. Establishing the model’s convergence, we investigate on several aspects related to electrokinetic flow phenomena and their influences on measuring the ionic current of the system.
Classification : 76Wxx, 76Zxx, 76Dxx
Author(s) :
- Doyel Pandey (Technical University Darmstadt)
- Pranab Kumar Mondal (Associate Professor, Indian Institute of Technology Guwahati)

[00360] Computational Analysis of Soot Production in an Internal Combustion (IC) Engine

Session Date & Time : 2E (Aug.22, 17:40-19:20)
Type : Contributed Talk
Abstract : A numerical technique for decreasing soot formation in emitted runoff streams is proposed. It helps remove soot particles in IC combustion engine exhaust streams continuously. The given model assists in decreasing pollutant formation, which contains selective reducing agents. It is reduced selectively in high-grade fuels such as diesel surrounding to form carbon-rich composition products. Results are obtained by implementing the Moss-Brooks model. The results of the proposed model showed good agreement with the literature data.
Classification : 80M12, 82M12, 65L12, 76N10, 76N20
Author(s) :
- Muhammad Ahsan (National University of Sciences & Technology, Islamabad)
- Muhammad Farhan Rafique (National University of Sciences & Technology, Islamabad, Pakistan)

[01906] Adjoint-Based Shape Optimization of Periodic Units for Compact Heat Transfer Devices

Session Date & Time : 2E (Aug.22, 17:40-19:20)
Type : Contributed Talk
Abstract : We present a DOLFIN/FEniCS framework for shape optimization of compact heat transfer devices consisting of periodic units. The framework relies on highly parallelized, efficient finite-element solvers for the three-dimensional periodically developed flow and heat transfer equations and their eigenvalue problems. The adjoint-based shape calculus is implemented by means of automated differentiation and operator overloading. Design constraints are incorporated through an augmented Lagrangian method. The optimized surfaces are compared with designs obtained through density-based topology optimization.
Classification : 80M50, 80M10, 49M41, 80M40, 76S05
Author(s) :
- Geert Buckinx (VITO)
- Stephan Schmidt (Humboldt University Berlin)