A study of annular slurry jet for abrasive waterjet cutting
A Study of Annular Slurry Jet for Abrasive Waterjet Cutting
Spreading layer of two-dimensional buoyant jet
A two dimensional buoyant jet, discharged vertically into a stratified fluid with no crossflow, is considered. Simple equations are developed with dimensional analysis to predict the location and concentration of effluent as it begins to spread horizontally from the buoyant jet axis; the dimensionless independent variables are determined by a stratification parameter and the jet‐source flux of either momentum or buoyancy. Scale model tests verify the form of these equations and provide experimental values of coefficients not provided by the dimensional analysis. The results are compared to estimates made using the integral equations and found to provide a better description of the location and thickness of the spreading layer.
An Experiment on the Wake of a Slender Propeller-Driven Body
Abstract : The momentumless wake of a slender propeller-driven model in a wind tunnel at a Reynolds number of 63000 (based upon diameter) is examined using the hot-wire anemometer. Measurements of the mean flow field including swirl are presented, as well as measurements of the turbulent intensity and Reynolds stress within the first 20 diameters behind the model. The data are compared with a previous experiment at a similar Reynolds number using a blunt body and a high-speed jet as the propulsion source. A theoretical model of the flow is presented which describes the flow quite well, at one location.