CFD SIMULATION OF SHEAR STRESS AND SECONDARY FLOWS IN URETHRA

Author:

Niu Yang-Yao1,Chang Ding-Yu1

Affiliation:

1. Institute of Mechanical and Aerospace Engineering, Chung-Hua University, Hsin Chu, Taiwan

Abstract

In this work, a preliminary numerical simulation of the lower urinary system using Computational Fluid Dynamics (CFD) is performed. Very few studies have been done on the simulation of three-dimensional urine through the lower urinary system. In this study, a simplified lower urinary model with rigid body assumption is proposed. The distributions of urine flow velocity, wall pressure and shear stress along the urethra are simulated based on MRI scanned uroflowmetry of a normal female. Numerical results show that violent secondary flows appear on the cross surface near the end of the urethra when the inflow rate is increased. The oscillative variation of pressure and shear stress distributions are found around the beginning section of the urethra when flow rate is at the peak value.

Publisher

National Taiwan University

Subject

Biomedical Engineering,Bioengineering,Biophysics

Cited by 3 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Numerical investigation of urethra flow characteristics in benign prostatic hyperplasia;Computer Methods and Programs in Biomedicine;2022-09

2. A non-invasive, patient-specific method for estimating detrusor bladder pressure;Computer Methods in Biomechanics and Biomedical Engineering: Imaging & Visualization;2013-06-21

3. Dynamics analysis of bladder-urethra system based on CFD;Frontiers of Mechanical Engineering in China;2010-05-22

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