Abstract
Behavior of hybrid nanofluid in views of irreversibility and convection was scrutinized in current article. Influences of Lorentz, gravity and permeability on isotherms, components of irreversibility were depicted. With involve of single-phase model, properties of carrier fluid were estimated and related terms of porous zones were added in momentum equations as well as Lorentz forces. CVFEM was applied and new formulations for Nu and Be were offered according to achieved data. The variables are permeability, gravity and Lorentz forces and contours for various values of them were depicted. As Ra and permeability increase the isotherms become more complicated and it means higher convection. Rise of these factors makes velocity of testing fluid to increase. Augmenting Ha acts against the gravity force and velocity reduces. Temperature of inner wall declines about 15% with augment of permeability while it rises 17.65% with augment of Ha. Nu decreases about 19.93% with augment of Ha while it enhances about 80.44% and 7.52% with growth of Ra and permeability. Be declines about 2.82% and 80.3% with augment of permeability and Ra. Also, Be rises about 24.57% with grow of Ha.