8 citations · 42 across the 11 of their papers we have counts for
4 papers · 1 filter
Linear and nonlinear instabilities in highly shear thinning fluid flow through a pipe
Xuerao He, Kengo Deguchi, Runjie Song +1
Shear-thinning fluids flowing through pipes are crucial in many practical applications, yet many unresolved problems remain regarding their turbulent transition. Using highly robus…
Instability in centrifugally stable shear flows
Kengo Deguchi, Ming Dong
We investigate the linear instability of flows that are stable according to Rayleigh's criterion for rotating fluids. Using Taylor-Couette flow as a primary test case, we develop l…
Three-dimensional coherent structures in a curved pipe flow
Runjie Song, Kengo Deguchi
Dean's approximation for curved pipe flow, valid under loose coiling and high Reynolds numbers, is extended to study three-dimensional travelling waves. Two distinct types of solut…
A sufficient condition for inviscid shear instability: Hurdle theorem and its application to alternating jets
Kengo Deguchi, Makoto Hirota, Timothy Dowling
We propose a simple method to identify unstable parameter regions in general inviscid unidirectional shear flow stability problems. The theory is applicable to a wide range of basi…