This review highlights the profound and unexpected ways in which viscosity varying in
space and time can affect flow. The most striking manifestations are through alterations of …

The formation and amplification of streamwise velocity perturbations induced by cross-
stream disturbances is ubiquitous in shear flows. This disturbance growth mechanism, so …

A viscosity stratification is considered as a possible mean to postpone the onset of transition
to turbulence in channel flow. As a prototype problem, we focus on the linear stability of …

A comprehensive study of the effect of wall heating or cooling on the linear, transient and
secondary growth of instability in channel flow is conducted. The effect of viscosity …

Steady inflow through a non-axisymmetric stenotic model at Re= 500-1000 for Newtonian
and shear-thinning non-Newtonian rheologies was studied numerically to investigate the …

In the region close to the thermodynamic critical point and in the proximity of the
pseudoboiling (Widom) line, strong property variations substantially alter the growth of …

We study the instability of plane Poiseuille flow of the viscoelastic second-order fluid in a
homogeneous porous medium. The viscoelastic fluid between two parallel plates is driven …

The temporal stability of plane Poiseuille and Couette flows for a Navier–Stokes–Voigt type
of viscoelastic fluid is examined. The primary unidirectional flow is between two infinite rigid …

A linear stability analysis of the combined plane Couette and Poiseuille flow of shear-
thinning fluid is investigated. The rheological behavior of the fluid is described using the …

The objective of this work is to investigate linear modal and algebraic instability in Poiseuille
flows with fluids close to their vapour–liquid critical point. Close to this critical point, the ideal …