5. International Gaziantep Scientific Research Congress, Gaziantep, Türkiye, 27 - 28 Aralık 2025, ss.697-702, (Tam Metin Bildiri)
The aim of this study is to model the cutting mechanism of Abrasive Water Jet (AWJ) machining technology, which plays a critical role in industrial production, within the framework of physical laws without incurring experimental costs, and to determine the theoretical limits of process parameters. In this study, a closed-form mathematical model is derived by integrating the compressible flow behavior of water under ultra-high pressure, multiphase momentum transfer in the mixing chamber, and erosion kinetics on the target material. Parametric simulations performed on the developed analytical model examine the nonlinear interactions between hydraulic pressure, abrasive mass flow rate, and feed rate. The most important theoretical finding of the study is that continuously increasing the abrasive loading rate does not improve cutting performance; on the contrary, it reduces performance after a certain optimum point due to velocity losses resulting from momentum conservation. This study provides engineers and operators with a strong theoretical foundation that allows them to predict machine limits before physical prototyping.