Flow-induced vibration (FIV) of a flexible cylinder with an upstream wake interference at subcritical Reynolds number is numerically investigated in this study. Two cylinders are installed tandem arrangement the separation between centers set 5.0 diameters. The downstream and placed stationary rigid cylinder. A quasi-three-dimensional fluid-structure interaction (FSI) numerical methodology that...

BACKGROUND Cross-sectional flow-velocity profiles from early mitral flow in 20 patients (10 with mitral regurgitation and 10 with mitral stenosis) were constructed from the velocity data from each point in sequentially delayed two-dimensional digital Doppler ultrasound maps. METHODS AND RESULTS The data suggested that the early mitral flow studied in an apical four-chamber view was variably s...

BACKGROUND AND PURPOSE Many patient monitoring techniques have been used for detecting cerebral hypoperfusion during carotid endarterectomy. We compared middle cerebral artery blood flow velocities with carotid artery stump pressures to evaluate the indications for common carotid artery cross-clamp shunting and the probable hemodynamic causes of cerebrovascular complications. METHODS Blood fl...

The aim of this study was to examine the effects of the sitting posture on the lower limb venous flow and to explore the beneficial effects of neuromuscular electrical stimulation (NMES) and an ottoman-type seat on the venous flow. Healthy adult volunteers without a history of lower limb surgery or thromboembolism were recruited, and the flow velocity, cross-sectional area, and flow volume of t...

Proper orthogonal decomposition (POD) is often employed in developing reduced-order models (ROM) fluid flows for design, control, and optimization. Contrary to the usual practice where velocity field focus, we apply POD analysis on pressure data obtained from numerical simulations of flow past stationary oscillating cylinders. Since mainly contributes hydrodynamic forces acting structure, compu...