## THERMAL SCIENCE

International Scientific Journal

### AN ANALYTICAL STUDY ON THE ENTROPY GENERATION IN FLOW OF A GENERALIZED NEWTONIAN FLUID

**ABSTRACT**

In this study, an analytical investigation on pressure driven flow of Powell- Eyring fluid is conducted to understand the irreversibilities due to heat transfer and viscous heating. The flow between infinitely long parallel plates is considered as fully developed and laminar with constant properties and subjected to symmetrical heat fluxes from solid boundaries. The internal heating due to viscous friction accompanies external heat transfer, that is, viscous dissipation term is to be involved in the energy equation. As a crosscheck, accuracy of analytical solutions is confirmed by a predictor-corrector numerical scheme with variable step size.

**KEYWORDS**

PAPER SUBMITTED: 2019-07-01

PAPER REVISED: 2019-08-20

PAPER ACCEPTED: 2019-08-22

PUBLISHED ONLINE: 2019-10-06

**THERMAL SCIENCE** YEAR

**2019**, VOLUME

**23**, ISSUE

**Supplement 6**, PAGES [S1959 - S1969]

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