Abstract: Abrasive Waterjet machining offers the potential for the development of a tool which is less sensitive to material properties, has virtually no thermal effects, and imposes minimal stresses. This method Abrasive water jet machining used industrially in 1983 for cutting of glass. Nowadays, this process is being widely used for machining of hard to machine materials like ceramics, ceramic composites, fiber- reinforced composites, and titanium alloys where conventional machining is often not technically or economically feasible. Different types of abrasives are used in AWJM like garnet, olivine, Aluminum oxide (Al2O3), silica sand, glass bead, silicon carbide (SIC), zirconium, etc. But a survey shows that 90% of the AWJM is done using garnet as an abrasive. The hardness of the abrasive particles is an important characteristic which strongly influences the cut geometry and that the depth of jet penetration depends strongly on the ratio of the hardness of the target material to the hardness of the abrasive. AWJM involves quite a few parameters that can affect the cutting performance like cutting parameters stand of distance, traverse speed, impact angle and number of passes. Hydraulic parameters like water pressure, orifice diameter, water Jet etc.
The objective of this work is to evaluate and optimize Inlet Pressure of water, Velocity of water, Mass flow rate of water, Mass flow rate of abrasive particles, velocity of water abrasive mixture. Here we need to run analysis on fluid dynamics and flow characteristics using Computational Fluid Dynamics (CFD), which is a science that uses data structures to solve issues of fluid flow like velocity, density, and chemical compositions. Here in CFD analysis we need to run experimental investigation of the general nature of flow through the nozzle and its results in rapid wear of the nozzle which affects the cutting performance.

Keywords: Abrasive jet, process parameters, CFD,

| DOI: 10.17148/IARJSET.2021.8958