Quality Assuring a Ring Vortex Flow Phantom in Real-Time

Interaction Between a Vortex Ring and a Uniform Cross-Flow

This paper describes features in the structure of a laminar vortex ring ejected vertically from an elevated pipe into a uniform horizontal cross flow. Measurements are obtained by particleimage velocimetry (PIV) and flow-visualisation images are obtained by planar-laser-induced fluorescence (PLIF). Cross flow produces a shear layer over the open end of the elevated pipe. As a vortex ring is eje...

Assuring quality.

A Statistical Quality Control Technique for Assuring Just-in-time Patient Flow in an Outpatient Surgical Setting: a Conceptual Approach

This study focuses on a sub-system process in an outpatient surgical clinic within a tertiary care hospital complex. Since the surgical staff provides services to the patients on a continuous yet sequential basis, just-in-time patient flow could significantly enhance not only the productivity of the process, but also the quality of patient care. When patient arrival times are out-of kilter or n...

Phantom validation of 4D flow: independent validation of vortex ring volume quantification using planar laser-induced fluorescence

Cardiac MR group Lund, Dept. of Clinical Physiology, Lund University, Lund, Sweden Full list of author information is available at the end of the article Figure 1 Design and construction of the vortex ring flow phantom. a) 2D view of the flow rectifier and vortex ring tank. All measures are in millimeters (mm). b) 3D view of the flow rectifier and vortex ring tank. c) Pump design. A servo motor...

A model for universal time scale of vortex ring formation

An analytical model for predicting the universal time scale for formation of vortex rings generated through impulsively started jets is considered. The model is based on two assumptions, namely the validity of the slug model in simulating the discharge process of the fluid out of the cylinder and the approximation of the vortex at the pinch off moment by a vortex in the Norbury family. The nond...