Numerical Investigation of Blood Flow in Arteries with Different Stenosis Geometries

Swadhin Ghosh; Md. Mamunur Roshid; Umme Habiba; Dipannita Das  Arpa

doi:10.38032/scse.2026.4.185

Numerical Investigation of Blood Flow in Arteries with Different Stenosis Geometries

Authors

Swadhin Ghosh Department of Mechanical Engineering, Chittagong University of Engineering and Technology Chattogram-4349,Bangladesh
Md. Mamunur Roshid Department of Mechanical Engineering, Chittagong University of Engineering and Technology Chattogram-4349,Bangladesh
Umme Habiba Department of Mechanical Engineering, Chittagong University of Engineering and Technology Chattogram-4349,Bangladesh
Dipannita Das Arpa Department of Economics, University of Chittagong, Chattogram-4349, Bangladesh

DOI:

https://doi.org/10.38032/scse.2026.4.185

Keywords:

Hemodynamics, Computational fluid dynamics,, Stenosis, Wall share stress(WSS), Biomedical Simulation

Abstract

Arterial stenosis causes a dramatic change in the hemodynamic characteristics of an artery, including the pressure drop distribution along with velocity fields and wall shear stress (WSS), which are important indicators for the development of disease and its potential treatment. A comparative numerical study is reported here of blood flow in semicircular and trapezoidal stenosis domains for different degrees of 25%, 50% and 75% degree of blockage. The hemodynamic conditions were then investigated in CFD simulations at an average Reynolds number of 132.5. The findings show that stenosis severity and geometry have significant impact on the Post Stenotic flow disturbances, WSS distribution and velocity streamlines. Trapezoidal stenoses resulted in sharper velocity gradients and higher localized WSS than those of the semicircular stenoses, which indicated a more hazardous condition against arterial wall damage and rupture. Degree of stenosis correspondingly increased hemodynamic disturbances in all situations, with 75% blockage having the most severe flow disturbance. The clinical relevance of stenosis geometry for diagnostic work-up and therapeutic strategies is underlined by these findings. The results provide a valuable insight to vascular biomechanics and contribute to the formulation of geometry-dependent approaches for more accurate diagnosis and therapy in cardiovascular diseases.

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8th International Conference on Mechanical Engineering and Renewable Energy (ICMERE 2025)

Published

02.08.2026

Conference Proceedings Volume

Vol. 4 (2026): Proceedings of 8th International Conference on Mechanical Engineering and Renewable Energy (ICMERE2025)

Section

Articles

License

This work is licensed under a Creative Commons Attribution 4.0 International License.

All the articles published by this journal are licensed under a Creative Commons Attribution 4.0 International License

How to Cite

[1]

S. Ghosh, M. M. Roshid, U. Habiba, and D. D. Arpa, “Numerical Investigation of Blood Flow in Arteries with Different Stenosis Geometries”, SCS:Engineering, vol. 4, pp. 413–417, Aug. 2026, doi: 10.38032/scse.2026.4.185.