Simplified model of ureteral peristalsis bolus using fluid structure interaction

Abstract

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Numerical analysis of an obstacle motion in the human ureter using the dynamic mesh approach

“…On top of these studies, many others have focused on the interaction between urine flow and ureter wall structure. [23][24][25][26] Vahidi and Fatouraee 23 analyzed urine peristaltic transport from kidney to bladder using FSI computational method and investigated the distribution of urine pressure, ureteral wall shear stress and the influence of pressure difference between the kidney and the bladder on the possibility of reflux. S anchez et al 26 presented a computational model based on the FSI approach for the ureteral peristalsis.…”

“…Keni et al 20–22 computationally simulated peristaltic motion in an unobstructed ureter using a three‐dimensional model and analyzed the effect of single and multiple peristaltic waves such as wall shear stress, pressure gradient, and two common abnormal phenomena, that is, reflux and trapping, inside the ureter. On top of these studies, many others have focused on the interaction between urine flow and ureter wall structure 23–26 . Vahidi and Fatouraee 23 analyzed urine peristaltic transport from kidney to bladder using FSI computational method and investigated the distribution of urine pressure, ureteral wall shear stress and the influence of pressure difference between the kidney and the bladder on the possibility of reflux.…”

“…Sánchez et al 26 presented a computational model based on the FSI approach for the ureteral peristalsis. Razavi and Jouybar 25 performed a numerical simulation using fluid–structure interaction method in axisymmetric models to analyze two abnormal ureters. Vahidi et al, 27,28 based on a numerical simulation in an axisymmetric tube, examined the effect of some physiological factors, including the pressure difference between the kidney and the bladder, the peristaltic wave velocity, and the maximum height and number of contraction waves on the peristaltic efficiency.…”

Longitudinal wall motion during peristalsis and its effect on reflux

“…the kidney and bladder) effects that require non-periodic boundary conditions. More recently the problem of peristalsis has been solved numerically (Hosseini et al 2018;Razavi & Jouybar 2018;Mancha Sánchez et al 2020;Keni et al 2021), addressing different clinical scenarios. All of these numerical models generally confirm the applicability of lubrication theory in analysing ureteral peristalsis.…”