The Flow of Gels through a Nozzle like Geometry

Abstract

In the following paper a test setup to analyze the flow of gels in a constriction is presented as well as some results of the tests performed with this setup. Different gels and a Newtonian fluid were pressed through a test geometry, which is a pipe with a construction. The pressure loss and the velocity field were measured. It was shown, that gels can be advantageous to Newtonian fluids under certain boundary conditions regarding the pressure loss through the tested geometry. Since different boundary conditions cause different flow patterns, some flow patterns are shown and reference to some other analysis in literature is given. The test geometry was designed to be similar to a nozzle and therefore assumptions could be made regarding the influence of the flow pattern on the injection process in a combustion chamber.