The Effect of Tracheal Stenosis at Different Locations and Sizes on Airflow in the Trachea and Main Bronchi: A Numerical Modeling Analysis

Johari, Nasrul Hadi; Basri, Wan Mohd; Osman, Kahar; Salleh, Zuliazura Mohd; Helmi, Mohd Haris; Kadir, Mohammed Rafiq Abdul

doi:10.1166/asl.2013.5100

Cited by 1 publication

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“…But for sleeping case, slightly disturbance shown in velocity distribution for both left and right bronchi as the velocity inlet was to slow to begin with. Several researchers in their study set the percentage distribution to right and left bronchi to 45:55 so that right bronchi received more airflow rate compared to the left bronchi [7,9,11]. In this study, the actual distribution was analysed to see the real percentage distribution to the second generation of human trachea.…”

Section: Velocity Distribution Along Both Left and Right Bronchusmentioning

confidence: 99%

“…Thus, information on flow behavior such as velocity and pressure distribution can increase the percentage of the successful treatment because it helps medical practitioner in deciding the best treatment for trachea patient. Various research using Computational Fluid Dynamic (CFD) were done in order see the flow behavior inside human trachea [1][2][3][4][5][6][7][8][9][10][11]. They summarized that flow inside human trachea did affected by the complexity of the trachea structure.…”

Section: Introductionmentioning

confidence: 99%

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Rapid Prototyping 3D Model for PIV: Application in Human Trachea Model Flow Analysis

Salleh

Osman

Marian

et al. 2021

ARFMTS

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Experimental works for analysing flow behaviour inside human trachea has become continuous problem as the model used to study cannot imitate the real geometry of human trachea structure. As the technology develop, Rapid Prototyping (RP) become more useful in constructing the 3D model that has complexity in their geometries. RP not only offer several technologies in developing the 3D model, but also varies type of materials that can be used to manufacture the 3D model. In this study, RP technique was chosen to develop the 3D model of human trachea to do the Particle Image Velocimetry (PIV) experimental works. Material used was Vero Clear due to PIV need a model that transparent so that visualization on flow inside the model can be seen and the velocity magnitude can be capture. The geometry was adapted from 60 years old trachea patient where the images of trachea was taken by using CT-scan. MIMICS software was used to extracted the images before reconstruct the trachea into 3D model. Velocity distribution was visualized and the magnitude were taken at both left and right bronchi. From the analysis, it concluded that the distribution of airflow to the second generation of trachea was 60:40 to right and left bronchi. It follows the rules as the right bronchi need to supply more air to the right lung compared to left as the volume of right lung bigger that left lung.

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Section: Velocity Distribution Along Both Left and Right Bronchusmentioning

confidence: 99%