Choking is a leading cause of morbidity and mortality among children, especially those aged 3 years or younger. Food, coins, and toys are the primary causes of choking-related injury and death. Certain characteristics, including shape, size, and consistency, of certain toys and foods increase their potential to cause choking among children. Childhood choking hazards should be addressed through ...

Slugging flow poses significant challenges to the offshore multiphase flowline and riser systems. Slug is characterized by an uneven regime whereby pipeline pressures, temperatures, or volume rates fluctuate. One of most common causes severe slugging low pressures which buildup fluid over time, consequentially pressure oscillations. This mostly occurs in vertical risers wells. The negative effe...

OBJECTIVE The objective of this study was to investigate the epidemiology of nonfatal choking on food among US children. METHODS Using a nationally representative sample, nonfatal pediatric choking-related emergency department (ED) visits involving food for 2001 through 2009 were analyzed by using data from the National Electronic Injury Surveillance System-All Injury Program. Narratives abst...

In this work we examine the flow deviation and its relationship to critical choking, i.e., choking of meridional component velocity, in transonic turbine cascades operating with non-ideal compressible flows. To purpose, a generalized expression corrected per unit area as function both thermodynamic state molecular complexity working fluid, Mach number, amount swirl is derived. The trends respec...

Granular flow simulation using CFD has received a lot of attention in recent years. In such cases, CFD is either, coupled with Discrete Element Method (DEM) techniques for appropriate incorporation of inter-particle collisions, or the Eulerian CFD approach is used in which granular particles are treated as they were fluid. In the present study, a CFD analysis was performed...

• The actual flow rate is constant for the outlet pressure range of 35.30 psig to as low as a complete vacuum. The flow rate can be obtained from the charts on pages 16-18; e.g. for an orifice of .010" diameter and with 80 psig inlet pressure, the choked flow rate is 8.4 scfh (page 16). This flow rate will be constant for all outlet pressure conditions between 35.30 psig and full vacuum. 0 1 .5...

We investigate the mechanism of aggregation of red blood cells (RBC) in capillary vessels. We use a discrete-particle model in 3D to model the flow of plasma and RBCs within a capillary tube. This model can accurately capture the scales from 0.001 to 100 μm, far below the scales that can be modeled numerically with classical computational fluid dynamics. The flexible viscoelastic red blood cell...