A.S. Alqahtani

ORCID: 0000-0002-0263-5363
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About
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Research Areas
  • Nanofluid Flow and Heat Transfer
  • Heat Transfer Mechanisms
  • Fluid Dynamics and Turbulent Flows
  • Heat Transfer and Optimization
  • Fractional Differential Equations Solutions
  • Mathematical and Theoretical Epidemiology and Ecology Models
  • Particle Dynamics in Fluid Flows
  • Fluid Dynamics and Thin Films
  • Rheology and Fluid Dynamics Studies
  • Nonlinear Differential Equations Analysis
  • Nonlinear Waves and Solitons
  • Differential Equations and Numerical Methods
  • Evolution and Genetic Dynamics
  • Meteorological Phenomena and Simulations
  • Differential Equations and Boundary Problems
  • Chaos control and synchronization
  • Nonlinear Photonic Systems
  • Nonlinear Dynamics and Pattern Formation
  • Stability and Controllability of Differential Equations
  • Fluid Dynamics and Vibration Analysis
  • Climate variability and models
  • Biochemical and Structural Characterization
  • Relativity and Gravitational Theory
  • Tribology and Lubrication Engineering
  • Field-Flow Fractionation Techniques

King Khalid University
2015-2025

Najran University
2024

The remarkable thermophysical characteristics of hybrid nanofluids reveal the considerable potential in a wide range heat transfer applications. In comparison to conventional nanofluids, their capacity enhance transport is impressive. current study represents novel nanomaterials such as Silicon dioxide (SiO2) and Titanium oxide (TiO2) flow ethylene glycol under significance non-linear thermal radiation non-uniform source/sink. well-known Himelton-Crosser model for used express nanoparticles...

10.1016/j.csite.2023.102870 article EN cc-by Case Studies in Thermal Engineering 2023-03-07

Heat and mass transfer have numerous industrial applications. The classical heat laws (Fourier Fick laws) do not predict thermal solute relaxation time phenomena. However, in this article, generalized modeling related to simultaneous non-Newtonian fluid the presence of chemical reaction generation is presented models are numerically solved by finite element method (FEM). Hybrid nanoparticles Ag andFe3O4 considered novel correlations inserted during numerical simulations. present results a...

10.1016/j.csite.2022.101949 article EN cc-by-nc-nd Case Studies in Thermal Engineering 2022-04-01

The physical strength, mechanical resistance, chemical stability, thermal conductivity, and other properties of hybrid nanoparticles are more satisfactory than those individual nanofluids. performance nanofluids has been the subject an increasing number studies in literature. A significant research is done on theoretical correlations for estimating thermophysical characteristics heat transmission investigated present work through a comparative analysis. For this, mathematical model...

10.1016/j.aej.2023.05.062 article EN cc-by-nc-nd Alexandria Engineering Journal 2023-06-12

Investigation on hybrid nanofluids has increased significantly, and findings indicate that these fluids are effective heat transfer for industrial applications. The thermal conductivity of nanoparticles, particle volume fractions, mass flow rates play a major role in the enhancement nanofluids. transport only depends nanoparticles when fractions constant. Therefore, purpose this article is to analyze Zn−TiO2/H2O nanofluid past an inclined shrinking surface. PDEs model converted into ODEs by...

10.1016/j.csite.2023.103000 article EN cc-by Case Studies in Thermal Engineering 2023-04-18

This article explores the influence of activation energy and microorganisms on flow Jeffrey nanofluid over an electrically conducting stretching surface, considering key factors such as Brownian motion, thermophoresis, Joule heating, thermal radiation. The fluid dynamics entail a surface subjected to prescribed temperature constant wall temperature. Through similarity transformations, governing equations are solved using MATLAB's bvp4c function. Employing numerical perturbative approach,...

10.1016/j.aej.2024.05.010 article EN cc-by-nc-nd Alexandria Engineering Journal 2024-05-17

A major global health problem continues to be malaria, a disease that can fatal brought on by Plasmodium parasites and spread the bite of infected Anopheles mosquitoes. We provide deterministic mathematical model in this study simulate dynamics malaria transmission between humans present new compartment for hospitalized patients as well fractional calculus. The next-generation matrix technique is used obtain fundamental reproduction number, R0, stability conditions model's equilibrium points...

10.1016/j.aej.2024.05.055 article EN cc-by Alexandria Engineering Journal 2024-05-31

The particular inquiry is made to envision the behavioral characteristics of gyrotactic microorganism effects on MHD flow Jeffrey nanofluid. Together nanoparticles and motile are inducted into modeled nonlinear differential equations. optimal solutions for governing equations tackled by homotopy analysis method. physical relatable parameters explored deliberated in terms graphs numerical charts. Also, precision present findings certified equating them with previously published work. It that...

10.1155/2019/3478037 article EN cc-by Mathematical Problems in Engineering 2019-01-01

This paper examines the steady-state three dimensional momentum and internal energy change in rotating viscoelastic fluid flow along with convective boundary conditions. In most of literature, thermophysical properties are assumed to be constant. But current analysis fills this gap by taking viscosity, conductivity diffusivity temperature dependent. order create a chemical reaction system activation is added. Velocity over an exponential surface varied exponentially while Casson model for...

10.1016/j.asej.2020.02.011 article EN cc-by-nc-nd Ain Shams Engineering Journal 2020-03-20

Present work is pursued to examine the 3D bioconvection Casson nanofluid flow between two rotating and stretchable disks. The consequences of Darcy Forchheimer along with thermal radiation, magnetic field heat source/sink are analyzed. Effects thermophoresis Brownian motion also considered. Flow related partial differential equations converted ordinary by using similarity transformations. Shooting technique applied solve prevailing support MATLAB Packages. Radial tangential components...

10.1016/j.csite.2021.101201 article EN cc-by-nc-nd Case Studies in Thermal Engineering 2021-07-07

Abstract This study examines the generalized Couette flow of couple stress fluid within geometry a helical screw rheometer (HSR). The HSR is simplified by modeling as an exposed rectangular channel and flattening barrel surface. are maintained at constant temperatures, , respectively. viscosity assumed to vary with temperature, Reynolds model applied describe this temperature‐viscosity relationship. resulting mathematical formulation leads nonlinearly coupled ordinary differential equations,...

10.1002/zamm.202400907 article EN ZAMM ‐ Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik 2025-01-01

The role of residual bone height (RBH) and implant macro-design on stability during placement in sinus floor evaluation (SFE) is interest. There were a total 160 fresh bovine rib specimens resembling type-IV density which divided into 4 categories the basis prepared i.e. 3mm, 6mm, 9 mm 15 mm. Implant quotient (ISQ) values each four evaluated found to increase as increased. It was observed that at (6mm, 9mm), ISQ maximum for tapered effect design comparison other (p< 0.01). concluded...

10.6026/973206300210040 article EN cc-by Bioinformation 2025-01-31
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