COMPREHENSIVE STUDY OF THE BIOCONVECTIVE FLOW OF A HYBRID NANOFLUID WITH GYROTACTIC MICROORGANISMS IN A SOLAR COLLECTOR

The three-dimensional flow of a hybrid nanofluid, including gyrotactic microorganisms, in a solar collector was
investigated for the purpose of improving its performance. The mathematical model of this flow was rearranged with
the use of the group transformation method into the model defined by ordinary differential equations. According
to the novel findings, the system of ordinary differential equations and the entropy generation were investigated
for the two values of the power-law index of the nanofluid: n = 2 and n ≠ 2. The influence of the parameters of the
hybrid nanofluid flow on its characteristics was analyzed on the basis of the graphs constructed. The two outputs
of the entropy generation were determined from the corresponding graphs for two different values of the power-law
index of the nanofluid. The numerical results obtained were compared with the analogous results of previous works
published. It was established that the velocity of flow of a hybrid nanofluid is strongly dependent on its power-law
index. Moreover, the percentage of increasing the Nusselt number of this nanofluid flow was predicted to be 28.18%
for the Prandtl number changing within the range (4 ≤ Pr ≤ 6)

Author:  A. S. Rashed, T. A. Mahmoud, A. E. Kabeel, S. M. Mabrouk
Keywords:  bioconvection, entropy generation, inclined configuration, group method, power-law index
Page:  1416