Abstract
Measurements of flow disturbances in the downstream region of modeled stenoses in a rigid tube, with upstream pulsatile flow are reported. Experiments were conducted over physiologically relevant Reynolds Numbers, ReD from 200 to 1000, based on the tube diameter and the instantaneous upstream centerline velocity. Contoured constrictions with 25, 50 and 75% area reductions were investigated. Experimental data over extensive spatial regions of poststenotic fields were taken, employing a two-component Laser Doppler Velocimeter. Digital techniques for performing data analyses were used to study the evolution of poststenotic flow disturbances. It is found that different types of flow disturbances exist downstream of the constriction. Data analysis methods with the aid of flow visualization allow accurate classification of the disturbances which are sensitive indicators of mild to moderate constrictions. Although the present study was motivated by a biological situation, sufficient data were reported in detail that they may also be used by investigators working in computational fluid dynamics.
Original language | English |
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Pages | 215-222 |
Number of pages | 8 |
State | Published - 1995 |
ASJC Scopus subject areas
- General Engineering