Experimental and numerical study of stenotic flows

S. M.Abdul Khader, R. Rajeev, Anurag Ayachit, Raghuvir Pai, C. V. Muraleedharan, M. Zubair, V. R.K. Rao

Research output: Contribution to journalArticle

Abstract

Atherosclerosis has been leading cause of deaths in several countries. Recent technical advances has allowed the investigation of stenotic flows and in understanding the implications with increased severity. Such studies shall provide detailed understanding of flow across stenosis and its progression. In the present study, a large artery representing segment of aorta is considered as test specimen. Experimental study is carried out by generating the pulsatile flow through pulsatile duplicator. Flow across normal and various severities of stenosis such as 25%, 50% and 75% are studied. Numerical simulation using CFD is also carried out in similar normal and stenosed models. A novel concept of using pulse duplicator to generate pulsatile waves and investigate the different stenosed models has been adopted. Results obtained experimentally and numerically are compared and agree well with that of clinical observations. This study demonstrates significant variation of haemodynamics in post-stenotic region with increased stenosis. Increased pulse pressure, phase lag is observed with increased severity. It is also observed that stenosis greater than 75% is significant as flow complexity is induced with considerable disturbance even in early and latter part of pulse cycle. Such study shall be useful in understanding the flow changes in stenosis and enhance clinical observation.

Original languageEnglish
Pages (from-to)1500-1506
Number of pages7
JournalJournal of Medical Imaging and Health Informatics
Volume6
Issue number6
DOIs
Publication statusPublished - 01-10-2016

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Pathologic Constriction
Pulsatile Flow
Pulse
Aorta
Cause of Death
Atherosclerosis
Arteries
Hemodynamics
Observation
Blood Pressure

All Science Journal Classification (ASJC) codes

  • Radiology Nuclear Medicine and imaging
  • Health Informatics

Cite this

Khader, S. M. A., Rajeev, R., Ayachit, A., Pai, R., Muraleedharan, C. V., Zubair, M., & Rao, V. R. K. (2016). Experimental and numerical study of stenotic flows. Journal of Medical Imaging and Health Informatics, 6(6), 1500-1506. https://doi.org/10.1166/jmihi.2016.1838
Khader, S. M.Abdul ; Rajeev, R. ; Ayachit, Anurag ; Pai, Raghuvir ; Muraleedharan, C. V. ; Zubair, M. ; Rao, V. R.K. / Experimental and numerical study of stenotic flows. In: Journal of Medical Imaging and Health Informatics. 2016 ; Vol. 6, No. 6. pp. 1500-1506.
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Khader, SMA, Rajeev, R, Ayachit, A, Pai, R, Muraleedharan, CV, Zubair, M & Rao, VRK 2016, 'Experimental and numerical study of stenotic flows', Journal of Medical Imaging and Health Informatics, vol. 6, no. 6, pp. 1500-1506. https://doi.org/10.1166/jmihi.2016.1838

Experimental and numerical study of stenotic flows. / Khader, S. M.Abdul; Rajeev, R.; Ayachit, Anurag; Pai, Raghuvir; Muraleedharan, C. V.; Zubair, M.; Rao, V. R.K.

In: Journal of Medical Imaging and Health Informatics, Vol. 6, No. 6, 01.10.2016, p. 1500-1506.

Research output: Contribution to journalArticle

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AU - Zubair, M.

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