Numerical analysis of unsteady free convection under the combined
influence of inclined magnetohydrodynamic and exothermic chemical
reaction in an enclosure filled with nanofluid
Hussein H. Alaydamee a, Mohammed Azeez Alomari b,c,*, Qusay H. Al-Salami d,
Farah Q.A. Alyousuf e, Faris Alqurashi f, Mujtaba A. Flayyih g
a Department of Chemical Engineering, University of Al-Qadisiyah, College of Engineering, Al-Qadisiyah, 58002, Iraq
b Department of Mechanical Engineering, University of Al-Qadisiyah, Ad-Diwaniyah, 58001, Iraq
c College of Engineering, University of Warith Al-Anbiyaa, Karbala, Iraq
d Department of Business Administration, College of Administrative and Financial Sciences, Cihan University-Erbil, Iraq
e Department of Computer Network, College of Engineering and Computer Science, Lebanese French University, Erbil, Kurdistan Region, Iraq
f Mechanical Engineering Dept., College of Engineering, University of Bisha, Bisha, Saudi Arabia
g Biomedical Engineering Department, College of Engineering and Technologies, Al-Mustaqbal University, Hillah, Iraq
A R T I C L E I N F O
Keywords:
MHD
Unsteady-natural convection
Inclined MHD
Exothermic reaction
Trapezoidal enclosure
A B S T R A C T
Unsteady study of the natural convection of aluminum oxide-water nanofluid within a trapezoidal geometry
containing a circular cylinder located at its center. Finite Element method has been considered for the numerical
analysis. The proposed investigation handled the impact of Rayleigh number (103–105), chemical reaction
parameter (0–4), aluminum oxide nanoparticles volume fraction (0–0.06), magnetic field (0–63) and its inclination
angle (0◦–90◦), and circular obstacle diameter (0.3–0.7) effects on time-dependent natural convection of
Al2O3–H2O nanofluid. On the other hand, the value of Prandtl number has kept constant at (Pr = 6.2). Since the
nanofluid mobility at φ = 0.02, Ha = 3, and Fk = 1 significantly improved, the heat transfer rate achieved its
maximum intensity at Ra = 105. Research also reveals a little effect on heat transfer by increasing the fraction of
nanoparticles. Additionally, as Ha intensifies from 0 to 63, a final change in the mean Nusselt number of 28.65 %
is displayed. Finally, as the magnetic field angle of rotation is diminished, more enhancement in heat transmission
is achieved. This research provides insights into the intricate relationship between natural convection
and exothermic reaction under the influences of various conditions. This can illustrate the flow and thermal
behaviors of nanofluid in such non-uniform shapes in many engineering applications.
1-8-2024 بحث الاسم الاول_compressed