Mixed convection in micropolar nanofluid flow through entrapped triangular enclosures and linear stability analysis considering magnetic effects and heat generation and absorption

2019 ◽  
Vol 97 (3) ◽  
pp. 252-266
Author(s):  
Tariq Javed ◽  
Muhammad Arshad Siddiqui
Keyword(s):  
Stability Analysis ◽  
Mixed Convection ◽  
Linear Stability ◽  
Heat Generation ◽  
Linear Stability Analysis ◽  
Nanofluid Flow ◽  
Magnetic Effects ◽  
Micropolar Nanofluid ◽  
Flow Through

Linear stability analysis of mixed convection flow in a horizontal channel filled with nanofluids

Heat Transfer ◽  
2020 ◽  
Vol 49 (4) ◽  
pp. 2297-2310
Author(s):  
Lahcen Bammou ◽  
Khalid Souhar ◽  
Samy Alami ◽  
M'Barek Feddaoui ◽  
Yves Le Guer
Keyword(s):  
Stability Analysis ◽  
Mixed Convection ◽  
Linear Stability ◽  
Linear Stability Analysis ◽  
Horizontal Channel ◽  
Convection Flow ◽  
Mixed Convection Flow

The Instability of Flow Through a Slowly Diverging Pipe With Viscous Heating

2011 ◽  
Vol 133 (7) ◽  
Author(s):  
Kirti Chandra Sahu
Keyword(s):  
Stability Analysis ◽  
Prandtl Number ◽  
Linear Stability ◽  
Linear Stability Analysis ◽  
Energy Equation ◽  
Pipe Wall ◽  
Negligible Effect ◽  
Viscous Heating ◽  
Fluid Viscosity ◽  
Flow Through

The nonparallel linear stability analysis of flow through a slowly diverging pipe undergoing viscous heating is considered. The pipe wall is maintained at constant temperatures and Nahme’s law is applied to model the temperature dependence of the fluid viscosity. A one-parameter family of velocity profiles for the basic state is obtained for small angles of divergence. The nonparallel stability equations for the disturbance velocity coupled to a linearized energy equation are derived and solved using a spectral collocation method. Our results indicate that increasing viscous heating, characterized by increasing Nahme number, is destabilizing. The Prandtl number has a negligible effect on the linear stability characteristics. The Grashof number stablizes the flow for Gr>106, below which it has a negligible effect.

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