Experimental and numerical investigation of flow field in flexible tube

FSI Computation and Experimental Verification of Fluid Flow in Flexible Tubes

“…However, since experimental data is missing for obvious reasons, the corresponding stresses will not be plotted. Indeed, stress analysis of rotationally symmetric bodies is well described in literature [5], [17], [18]. Other works [3], [7], [19], which were carried out at this topic, show that the link between the static pressure in the tube and the actual or simulated deformation of the tube is less prone to possible inaccuracies than is the case with purely hydraulic parameters.…”

Pulse flow of liquid in flexible tube

“…However, the test tube does not meet the condition { = 1.28}. (16) In this case, the relationship for the circumferential stress takes on well-known formula in (17). Correspondingly, Kc can also be modified for the thinwalled tube.…”

“…Input and output static pressure conditions obtained from pressure sensors are also known. Experimental testing was carried out at Victor Kaplan Department of Fluids Engineering and is described in [17]. Pressure conditions are the main boundary conditions determining the flow regime and subsequent deformations of the tube.…”

“…If the thickness of the tube wall is very small relative to its radius, we could further simplify this case. Similarly to Hookean solid we will consider that the circumferential stress σt is unchanging in the thin tube wall and is defined as in (17). Previous relationships (25) and (26) will take the form of equations (27) and (28).…”