Professor Dr. Abdul-Sattar Jaber Ali, a teacher in the Department of Mathematics at the College of Education for Pure Sciences, published a research paper on

Journal of Applied and Computational Mechanics

Journal of applied and computational Mechanics

A solid international magazine

Published by Shahid Chamran University of Ahvas, Iran

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In this study, a new approach is proposed to find analytical approximations of the two-dimensional natural convective transition in a concentric cylindrical horizontal ring bounded by two isothermal surfaces. The new method is based on the combination of Yang transformation algorithms and the hemotopy disorder method. Analytical solutions on core, outer layer and inner layer in small times have been found in a new way. Also, the effect of Grashof number, Prandtl scalar ratio and radius on heat transfer and fluid (air) flow with different values ​​has been studied. Moreover, the study

Calculates the mean of the Nusselt number with the effect of the Grashof number and the ratio of the radius to it as

Parameters that serve as clues for heat transfer calculations for the normal load of the loop. The results obtained by using the new method, proved that it is effective and has high accuracy compared to other methods used to find analytical approximate solutions for the transient normal load in a concentric horizontal cylindrical ring. The convergence of the new method is also discussed theoretically by referring to some theories, and empirically by

Verification of solutions resulting from convergent state simulation. Moreover, new graphs prove the accuracy, usefulness, necessity and efficiency of the new method solutions