Sami Ullah Khan

ORCID: 0000-0001-7326-5534
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About
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Research Areas
  • Nanofluid Flow and Heat Transfer
  • Heat Transfer Mechanisms
  • Fluid Dynamics and Turbulent Flows
  • Mathematical and Theoretical Epidemiology and Ecology Models
  • Fractional Differential Equations Solutions
  • COVID-19 epidemiological studies
  • Heat Transfer and Optimization
  • Aluminum Alloys Composites Properties
  • Solar Thermal and Photovoltaic Systems
  • Rheology and Fluid Dynamics Studies
  • Differential Equations and Numerical Methods
  • Advanced ceramic materials synthesis
  • Nonlinear Dynamics and Pattern Formation
  • Aluminum Alloy Microstructure Properties
  • Evolution and Genetic Dynamics
  • Heat and Mass Transfer in Porous Media
  • Field-Flow Fractionation Techniques
  • Essential Oils and Antimicrobial Activity
  • Fluid Dynamics and Thin Films
  • Nonlinear Differential Equations Analysis
  • Lattice Boltzmann Simulation Studies
  • Aerodynamics and Fluid Dynamics Research
  • Fluid Dynamics and Vibration Analysis
  • Biodiesel Production and Applications
  • Phase Equilibria and Thermodynamics

Quaid-i-Azam University
2025

Namal College
2023-2024

City University of Science and Information Technology
2021-2024

HITEC University
2023-2024

University of the Punjab
2024

Jiangsu University
2024

Iqra National University
2024

COMSATS University Islamabad
2014-2022

Lanzhou University of Technology
2022

University of Agriculture Faisalabad
2022

Numerous machining process output metrics may be used to evaluate a material's machinability, with tool life unquestionably being the most popular. The rate of wear, which is heavily reliant on current wear mechanisms, determines in main. problem needs rectified improve quality such as surface roughness and production time. In this study, thermal barrier coating (TBC) technique (HSS) its effectiveness. Utilizing Zirconia Chromium-based compounds, HSS have been coated. FEA (ANSYS software)...

10.58496/bjme/2023/002 article EN cc-by Deleted Journal 2023-02-20

Phosphate (P) and zinc (Zn) are essential plant nutrients required for nodulation, nitrogen-fixation, growth yield. Mostly applied P Zn in the soil converted into unavailable form. A small number of microbes have ability to transform unsolvable forms an available P-Zn-solubilizing rhizobacteria potential alternates supplement. In present study, effect two bacterial strains (Bacillus sp. strain AZ17 Pseudomonas AZ5) was evaluated on chickpea plant.Both were purified from rhizospheric grown-up...

10.1016/j.sjbs.2019.04.004 article EN cc-by-nc-nd Saudi Journal of Biological Sciences 2019-04-08

This research focuses on the analysis of competitive model used in banking sector based stochastic fractional differential equation. For approximate solution, a pseudospectral technique is utilized for proposed Lotka–Volterra equation using wide range order parameters simulations. Conditions stable and unstable equilibrium points are provided Jacobian. The long term can produce highly fluctuating dynamics, which also one reasons that this to problems arising finance, where fluctuations...

10.3390/math11061328 article EN cc-by Mathematics 2023-03-09

Abstract The economic impact of Human Immunodeficiency Virus (HIV) goes beyond individual levels and it has a significant influence on communities nations worldwide. Studying the transmission patterns in HIV dynamics is crucial for understanding tracking behavior informing policymakers about possible control this viral infection. Various approaches have been adopted to explore how virus interacts with immune system. Models involving differential equations delays become prevalent across...

10.1038/s41598-024-57073-3 article EN cc-by Scientific Reports 2024-04-04

The thermal characteristics of modified hybrid nanoparticles have been studied between two parallel walls with applications entropy generation and nonlinear radiation. Three types namely copper oxide (CuO), (Cu) aluminum (Al2O3) are utilized to determination heat transfer. contribution viscous dissipation Joule heating is also inspected. Moreover, the shape effects for three addressed as a novelty. mathematical model developed in view associated laws properties nanofluid. problem first...

10.1016/j.csite.2021.101425 article EN cc-by-nc-nd Case Studies in Thermal Engineering 2021-09-16

This motivating analysis aims to present the thermal mechanism for mixed convection flow of Reiner–Philippoff nanofluid with assessment entropy generation. The performances nanomaterials have been modified by utilizing nonuniform heat source/sink, Ohmic dissipations and radiation consequences. assumed surface is be porous non-Darcian medium. Cattaneo–Christov relations are followed modify mass equations. invoking similarity variables results in differential equations nonlinear coupled form....

10.1142/s0217979221500831 article EN International Journal of Modern Physics B 2021-03-08

A fractional model was developed for presenting the thermal assessment of nanoparticles in an inclined moving surface. Water used as a base fluid, while nanofluid utilized copper oxide and silver nanoparticles. The modification further supported by mixed convection, magnetic force, porous saturated space. Slip effects to surface were also introduced. fluctuation temperature at different times assumed following ramped constraints. computations set flow problems performed with implementations...

10.3390/app122110860 article EN cc-by Applied Sciences 2022-10-26

Stochastic SIRS models play a key role in formulating and analyzing the transmission of infectious diseases. These reflect environmental changes diseases their biological mechanisms. Therefore, it is very important to study uniqueness existence global positive solution investigate asymptotic properties model. In this article, we dynamics stochastic epidemic model with saturated incidence rate. The effects both deterministic distribution from susceptible are analyzed. Our findings show that...

10.3390/sym14091838 article EN Symmetry 2022-09-05

The convective transport of the third-grade fluid with thermo-diffusion features has to be worked out. impact Soret and Dufour properties, as well radiative phenomena, is noticed. assumed flow due stretched cylinder. partial differential equations indicating model are first out into dimensionless nature using similarity variables. most effective numerical technique (the Keller Box method) been used solve nonlinear ODEs for obtaining data. solution accuracy validated already claimed studies....

10.1080/17455030.2022.2085891 article EN Waves in Random and Complex Media 2022-06-16

The importance of the peristaltic phenomena in biological and biomedical engineering has recently sparked a significant interest. In current study, pattern Ellis fluid channel been inspected following propagation wave train with infinite magnitude. confined flow regime is assumed due to asymmetric channel. chemical reaction features are also considered modelling. modelling followed small Reynolds number hypothesis while long wavelength premised. influence various emerging physical parameters...

10.1016/j.asej.2022.101832 article EN cc-by-nc-nd Ain Shams Engineering Journal 2022-06-08

The ternary-hybrid nanofluids are impressive sub-class of nanomaterials with enhanced thermal features. Based on such improved characteristics, various applications materials being predicted in the efficiency systems, extrusion mechanism, solar collectors, nuclear processes, energy production and many. objective this investigation is to report comparative analysis for traditional nanofluid, hybrid nanofluid models water base fluid. ternary consisting nickel, aluminum copper metallic...

10.1016/j.sajce.2024.01.015 article EN cc-by-nc-nd South African Journal of Chemical Engineering 2024-01-30

The oral healthcare sector is witnessing a significant increase in the creation of eco-friendly biomaterials intended to inflict minimal damage humans and environment, primarily due inadequacies conventional synthetic restorative materials which have short shelf life are prone instability. main objective this study was synthesise cost-effective titania nanoparticles (TiO₂ NPs) from biowaste corn silky hair fibre. were characterised through x-ray diffraction; scanning electron microscopy;...

10.1016/j.csbj.2025.01.005 article EN cc-by-nc-nd Computational and Structural Biotechnology Journal 2025-01-01

<abstract><p>The aim of this study is to investigate the dynamics epidemic transmission COVID-19 SEIR stochastic model with generalized saturated incidence rate. We assume that random perturbations depends on white noises, which implies it directly proportional steady states. The existence and uniqueness positive solution along stability analysis provided under disease-free endemic equilibrium conditions for asymptotically stable model. An epidemiological metric based ratio basic...

10.3934/math.2023210 article EN cc-by AIMS Mathematics 2022-12-05

Based on enhanced thermal performances of hybrid nanomaterials, various multidisciplinary applications such nanofluids are presented in the cooling processes, HVAC systems, energy sectors, boosting sources, automotive systems etc. Owing to motivated mind, different mathematical models developed. However, analysis for nanofluid with help fractional is not focused properly. Therefore, objective current research develop a model enhancement heat transfer by using nanofluid. The decomposition...

10.1016/j.csite.2024.104648 article EN cc-by-nc-nd Case Studies in Thermal Engineering 2024-06-04
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