scholarly journals Predicting Boundary-Layer Transition over Backward-Facing Steps via Linear Stability Analysis

AIAA Journal ◽  
2020 ◽  
Vol 58 (9) ◽  
pp. 3728-3734
Author(s):  
Nathaniel Hildebrand ◽  
Meelan M. Choudhari ◽  
Pedro Paredes
Keyword(s):  
Boundary Layer ◽  
Stability Analysis ◽  
Linear Stability ◽  
Linear Stability Analysis ◽  
Boundary Layer Transition ◽  
Layer Transition

A Linear Stability Analysis of Incompressible Coaxial Jets Using an Accurate Boundary-Layer Approximation as Base Flow

2015 ◽  
Author(s):  
Helio Ricardo de Aguiar Quintanilha Júnior ◽  
Leonardo Santos de Brito Alves ◽  
Oberdan Miguel Rodrigues de Souza ◽  
Marcio Teixeira de Mendonça
Keyword(s):  
Boundary Layer ◽  
Stability Analysis ◽  
Linear Stability ◽  
Linear Stability Analysis ◽  
Base Flow ◽  
Boundary Layer Approximation ◽  
Coaxial Jets

Non-parallel linear stability analysis of the vertical boundary layer in a differentially heated cavity

1997 ◽  
Vol 352 ◽  
pp. 265-281 ◽  
Author(s):  
A. M. H. BROOKER ◽  
J. C. PATTERSON ◽  
S. W. ARMFIELD
Keyword(s):  
Boundary Layer ◽  
Stability Analysis ◽  
Linear Stability ◽  
Linear Stability Analysis ◽  
Navier Stokes ◽  
Parabolized Stability Equations ◽  
The Stability ◽  
Flow Quantity ◽  
Energy Equations ◽  
Made In

A non-parallel linear stability analysis which utilizes the assumptions made in the parabolized stability equations is applied to the buoyancy-driven flow in a differentially heated cavity. Numerical integration of the complete Navier–Stokes and energy equations is used to validate the non-parallel theory by introducing an oscillatory heat input at the upstream end of the boundary layer. In this way the stability properties are obtained by analysing the evolution of the resulting disturbances. The solutions show that the spatial growth rate and wavenumber are highly dependent on the transverse location and the disturbance flow quantity under consideration. The local solution to the parabolized stability equations accurately predicts the wave properties observed in the direct simulation whereas conventional parallel stability analysis overpredicts the spatial amplification and the wavenumber.

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