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International Journal of Fluid Mechanics Research
ESCI SJR: 0.206 SNIP: 0.446 CiteScore™: 0.5

ISSN Imprimir: 2152-5102
ISSN On-line: 2152-5110

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International Journal of Fluid Mechanics Research

DOI: 10.1615/InterJFluidMechRes.v34.i5.40
pages 434-461

Study of Pressure Drop and Flow Characteristics Across Rectangular Stenotic Models

Dipak Kumar Mandal
Deptartment of Mechanical Engineering, College of Engineering & Management, Kolaghat, P.O: K.T.P.P. Township, Midnapore (E) - 721171, West Bengal, India
Somnath Chakrabarti
Department of Mechanical Engineering, Indian Institute of Engineering Science and Technology Shibpur, Howrah, 711103, West Bengal, India

RESUMO

A numerical study has been carried out to investigate disturbances of blood flow through coronary artery with two rectangular stenoses for the restrictions of 10 to 90 % with the Reynolds numbers ranging from 25 to 375. Wall pressure, average pressure, flow characteristics, and its physiological aspects have been studied in detail. The non-dimensional pressure drop is higher for higher stricture length of rectangular stenosis. Atherosclerotic plaque formation tends to start from very low flow Reynolds number of 25 and 50 with 50 % restriction. For Reynolds numbers of 100 and above, it starts at 30 % stenosed condition. No applicable magnitude of variation between wall pressure and average pressure is noted. The effect of stricture length has been found no impact on the reattachment length.


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