Thermal study on non-Newtonian fluids through a porous channel for turbine blades

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 quad-rature 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 pre-vious 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.

Automated summary

The current study focuses on improving the cooling performance of turbine blades by utilizing non-Newtonian fluid. The rheology of non-Newtonian behavior is introduced and a differential quadrature procedure is used to simplify the highly nonlinear equations of motion. The findings show that changing the cross-viscosity parameter and power law index has a significant impact on the cooling performance of turbine blades.