Browsing by Author "Sulaiman, Tukur Abdulkadir"

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Citation Count: 0
Impact of variable electrical conductivity, viscosity on convective heat and mass transfer flow of CuO- and Al₂O₃-water nanofluids in cylindrical annulus
(World Scientific Publ Co Pte Ltd, 2024) Reddy, Y. Madhusudhana; Ganteda, Charankumar; Sreedhar, S.; Himabindu, I. B. N.; Sulaiman, Tukur Abdulkadir; Obulesu, Mopuri; Uzun, Berna
In the food industry, electrical conductivity is essential for heating processes. The dependence on temperature conductivity of electricity on the outermost layers flow of the nanofluid is the main topic of this paper. Variable electrical conductivity, viscosity, thermo diffusion, thermal radiation and radiation absorption on convective heat and mass transfer flow Cuo and Al2O3-water nano-fluids confined in cylindrical annulus. The non-linear governing equations have been solved by finite element technique with quadratic approximation functions. For various parametric adjustments, the temperature, speed, and nanoconcentration have all been examined. Similar to the cylindrical wall, quantitative evaluations have been made of the surface resistance, temperature rate and mass transport. It is discovered that for both types of nanofluids, a higher thermo-diffusion effect leads to a lower concentration and Sherwood digits on the cylinders. An augment in Q1 enriches the rapidity in CuO-water nanofluidic system as well as decreases in Al2O3-water nanofluidic. Increased Q1 lowers the real temperature and nanoconcentration in both types of nanofluids.
Citation Count: 0
Optical solitons for 2D-NLSE in multimode fiber with Kerr nonlinearity and its modulation instability
(World Scientific Publ Co Pte Ltd, 2024) Baber, Muhammad Zafarullah; Abbas, Gohar; Saeed, Iqra; Sulaiman, Tukur Abdulkadir; Ahmed, Nauman; Ahmad, Hijaz; Ozsahin, Dilber Uzun
This paper deals with the soliton solutions for beam movement within a multimode optical fiber featuring a parabolic index shape. It is considered that a Two-Dimensional Nonlinear Schrodinger Equation (2D-NLSE) with an instantaneous Kerr nonlinearity of the kind can represent the beam dynamics. Nonlinear Multimode Optical Fibers (MMFs) of this kind are gaining popularity because they provide novel approaches to control the spectral, temporal, and spatial characteristics of ultrashort light pulses. We gain the optical soliton solutions for the nonlinear evolution beam dynamics using the Jacobi Elliptic Function Expansion (JEFE) method. The exact analytical solution of Nonlinear Partial Differential Equations (NLPDEs) can be achieved with wide application using the effective JEFE approach. These solutions are obtained in the form of dark, bright, combined dark-bright, complex combo, periodic, and plane wave solutions. Additional solutions for Jacobi elliptic functions, encompassing both single and dual function solutions, have been acquired. This approach is based on Jacobi elliptic functions, which will provide us the exact soliton solutions to nonlinear problems. Additionally, we will analyze the Modulation Instability (MI) for the underlying model. Moreover, we show the physical behavior of the beam propagation in a multimode optical fiber the three-dimensional, two-dimensional, and their corresponding contour plots are dispatched using the different values of parameters.