الفهرس 
Introduction
The jet in crossflowOnly 14 pages are availabe for public view
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Abstract
ABSTRACT Many industrial combustion devices rely on jets in crossflow, JICF, also known as transverse jets, to achieve mixing and reaction. Gas turbine combustors, and industrial boilers, for example use gas-phase transverse jets for injection of fuel and pollution control agents. The goal of this study is to develop a new experimental technique able to introduce a complete analysis for a JICF, and other similar subjects. The idea of this technique is based on a combined computational-experimental study. The computational portion of the study is a developed two-dimensional model, CAST, to obtain a relation between velocity and concentration distributions. Consequently ensure that tracing jet trajectory either based on the velocity or concentration distributions is the same for the current case studies. In addition, a three-dimensional model to draw horizontal cross sections for a JICF has been modified, by estimating entrainment fraction at each cross section, instead of considering it as a constant value. Furthermore, the present study aims to obtain general correlations to trace jet centerline, and to estimate entrainment fraction. A special code called FLUIDLAB package, has been designed and developed to digitize and analyze the experimental outputs, this code can be considered as a corner stone in the introduced technique. The experimental portion introduces image digitizing technique, which has been developed to study JICF in both near- and far-field at the same time, and to obtain mean-flow measurements. Paraffin smoke is blowed into the jet and used as a marker of jet fluid, the result is the concentration of the jet fluid as it mixes with the crossflow. The concentration distribution is presented at various side-view locations in the flow field for a wide range of velocity ratios. Moreover, mean images are produced by FLUIDLAB package, based on averaging a group of digitized sequential instantaneous images. Furthermore, the experimental work has been divided into two main sections, the first is concerned with side-view images acquired along the centerline plane of the jets produced from a slit dimensioned 200mm x 1mm, and velocity ratios 1:1, 2:1, and 2.8:1 to simulate the two-dimensional model. Jet centerlines for velocity profiles obtained from CAST model, and the concentration distributions obtained from the experimental work have been compared. Agreement between both centerlines has been found, and a relation to predict jet centerline has been obtained.