This is an industrial project that I have recently started to work on. Abrasive flow machining is a process at micro scale that is used for surface finishing of the holes of devices that need accurate surface properties. My aim is to design fixtures that take place in the holes to guide the abrasive flow through them in the way that abrasive flow does its task with high efficiency. Abrasive flow is a non-Newtonian fluid flow and we want to predict its behavior with the aim of CFX software. In the figures below, you can see a schematic hole and the fixture in it. You can also see the primary CFD analysis.