Publication: Thermal study on non-Newtonian fluids through a porous channel for turbine blades
Date
2023
Authors
Zhu C.-Z.
Nematipour M.
Bina R.
Fayaz H.
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier Ltd
Abstract
The current paper aims to utilize non-Newtonian fluid and improve the cooling performance of turbine blades. To implement impinging fluid flow through a porous channel on a hot lower wall, in the first step, the rheology of non-Newtonian behavior is introduced. Then differential quadrature procedure is used to convert these highly nonlinear equations of motion to some simple algebraic expressions. There is a reasonable agreement between the present findings with previous research work. Finally, some vital parameters such as the cross-viscosity parameter and power law index are changed to evaluate how these factors improve the cooling performance of turbine blades. The findings show that a rising Prandtle number results in a 19% decrement in temperature pattern. For a constant cross-viscosity parameter, Reynolds number enhancement leads to wall friction augmentation of around 15%. Moreover, a 32% Nusselt number increment is observed by increasing the power law index for the same Reynolds number. � 2023 The Authors
Description
Keywords
Non-Newtonian fluid , Numerical modeling , Nusselt number , Porous channel , Thermal investigation , Equations of motion , Flow measurement , Non Newtonian flow , Non Newtonian liquids , Nonlinear equations , Nusselt number , Reynolds number , Rheology , Turbine components , Viscosity , Viscous flow , Cooling performance , Non-Newtonian fluids , Porous channel , Power law index , Reynold number , Thermal , Thermal investigation , Thermal study , Turbine blade , Viscosity parameters , Turbomachine blades