Dynamics analysis of bladder-urethra system based
on CFD

doi:10.1007/s11465-010-0027-8

Front. Mech. Eng.

2010, Vol. 5

Issue (3) : 336-340 https://doi.org/10.1007/s11465-010-0027-8

Research articles

Dynamics analysis of bladder-urethra system based on CFD

Qinghua JIN¹,Xiaojun ZHANG¹,Xiaoyang LI¹,Jianliu WANG²,

1.School of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100124, China; 2.Department of Obstetrics and Gynecology, Peking University People’s Hospital, Beijing 100044, China;

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Abstract A mathematical model for a bladder-urethra system can provide basic analysis for the disabled urethra closure of stress urinary incontinence (SUI) patients in a clinic. Based on computational fluid dynamics (CFD), we developed a three-dimensional urodynamic bladder-urethra system, which includes bladder, bladder neck, prostate, and urethra. The realistic recirculation process of the urinary bladder during the physiologic voiding process in conjunction with a flow simulation through the female urinary bladder and urethra is presented. The computational results show that a dead-water zone and the zone of secondary flow occur, independent of the shape of the prostatic urethra. For the pathological prostata, the extreme constriction of the prostatic urethra results in an additional wide-stretched dead-water zone. The simulation results does not only improve urinary incontinence surgery for clinicians, but can also provide a basis for theoretical analysis.

Keywords bladder-urethra system stress urinary incontinence (SUI) computational fluid dynamics (CFD) urodynamics

Issue Date: 05 September 2010

Cite this article:

Qinghua JIN,Xiaojun ZHANG,Xiaoyang LI, et al. Dynamics analysis of bladder-urethra system based on CFD[J]. Front. Mech. Eng., 2010, 5(3): 336-340.

URL:

https://academic.hep.com.cn/fme/EN/10.1007/s11465-010-0027-8
https://academic.hep.com.cn/fme/EN/Y2010/V5/I3/336

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