The logistic characteristics of the AWJ with machined workpiece evoke of jet behaviour as a quasi - "mechining tool with shape memory". The evidences are brought by the experiments at thin workpiece. There are explanations of observed and investigated phenomena and interactions of AWJ in workpiece cutting erosion front. The model is developed using Cylindrical Micro Segments. The Navier-Stokes equation is starting expression for the logistic modelling of complicated flow behaviour in non-Newton liquid here. The conditions, boundaries and theses are outlined for future extensive solution of this equation. Occurrences of cavitations marks are evidenced at acoustic emission graphs.
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