In this work, the mathematical modelling of peristaltic transport for incompressible Sutterby fluid through cavity between coaxial tubes where inner tube is fixed and outer has sinusoidal rhythmic fluctuations along channel’s walls presented. Under assumption long wavelength low Reynolds number, governing equations (motion, temperature, concentration) are illustrated in cylindrical coordinates....

The mechanisms of prokinetic action of tegaserod in the gastrointestinal tract has not been studied in detail. The aim of this study was to investigate the effect of tegaserod on peristaltic reflexes and propagating peristaltic waves in guinea pig ileum. A partitioned organ bath divided into three chambers was used to investigate the effect of tegaserod on peristaltic reflexes. A sensory stimul...

The effect of colonic distension and changes in intraluminal pH and osmolality have been investigated in patients with well established colostomies. Small volumes of acidic buffer (pH4) and hypertonic saline (4%) were found to be only a very weak peristaltic stimulus. Strong hypertonic solutions (glycerine BP) induced a poorly sustained peristaltic response in the majority of cases. Distension ...

Peristaltic flow is important in many biological processes, including digestion, and forms an component of any silico model the stomach. There a clear need to verify simulations such flows. An analytical solution was identified that can be used for verification, which gives equation net volumetric over cycle applied sinusoidal wall motion. Both smooth particle hydrodynamics (SPH) code (from CSI...

Placement of percutaneous jejunostomy tubes using fluoroscopy may be technically challenging because of the peristaltic motion of small bowel loops within the peritoneum. Furthermore, fluoroscopic jejunostomy placement has an inherent risk of complications, including peritonitis and death. A transnasal snare technique to facilitate direct jejunostomy in patients with a surgically altered gastri...

This research is concerned with the mixed convection peristaltic flow of nanofluid in an inclined asymmetric channel. The fluid is conducting in the presence of inclined magnetic field. The governing equations are modelled. Mathematical formulation is completed through long wavelength and low Reynolds number approach. Numerical solution to the nonlinear analysis is made by shooting technique. A...

Peristaltic transport of an incompressible electrically conducting viscous fluid in an inclined planar asymmetric channel is studied. The asymmetry is produced by choosing the peristaltic wave train on the walls to have different amplitude and phase. The closed form solutions of momentum and energy equation in presence of viscous dissipation term are obtained for long wave length and low Reynol...

The topic of this paper is the peristaltic motion a non-Newtonian Jeffrey fluid with couple stress across porous medium inside horizontal conduit. unit strained by uniform magnetic field. It taken into account effects viscous dissipation, internal heat generation, and radiation. This approach solves equations momentum, temperature, velocity. numerical formulas for axial velocity, velocity are c...

Correct registration between pre-operative high-resolution images and intra-operative data of lower detail is a fundamental requirement in image-guided liver surgery. We propose a multi modality liver model for measuring the accuracy of such registration methods. A freshly explanted porcine liver is artificially perfused by a peristaltic pump and liver motion is simulated by means of inflatable...