… visco-elasticity than the unsteady friction effect. The results from their study showed the sole
inclusion of visco-elasticity (without unsteady friction) … of only the unsteady friction. However, …

… One effect is the pipe visco-elasticity of the pipe–wall behaviour. The authors
investigated the unsteady friction and visco-elastic effects in pipe fluid transients using a …

… -elastic pipes by stressing the importance of both unsteady friction (UF) and visco-elasticity
(VE). … that the characteristics of the transients change according to the considered time-scale. …

… transient modelling using the classic method of characteristics and incorporating unsteady
friction (UF) and pipe-… conditions and the second stage to the transient state. This step-wise …

… flow in viscoelastic pipes. Later [18] these authors have extended their model so it could
simulate the FSI (fluid … damping in transient flow may come from (unsteady) friction, (unsteady) …

… a quasi-steady friction model. A predominance of the damping effect due to visco-elasticity
with respect to the damping effect related to the unsteady friction is confirmed in these contexts…

… be explained solely by the friction of the fluid at the pipe wall. The effect is rather caused
by a special strain property of the pipe material, the so-called viscoelasticity, meaning that the …

… , on the transient flow in a relatively long pipe, has been studied. At first, to study the transient
flow in pipes with fluid structure … In this paper, the unsteady friction effects are not studied. …

… transient flow in viscoelastic pipes must consider the effect of not only unsteady friction (UF)
of the pipe … the pressure fluctuation of transient flows in viscoelastic pipes. Rieutord and …

… to the parallel effects of unsteady friction and mechanical behaviour of PE pipe wall against
pressure wave damping, as well as different sensitivity of inverse transient flow solver, these …