MATHEMATICAL-MODELING AND EXPERIMENTAL-VERIFICATION OF STATIONARY WATERJET CLEANING PROCESS

The use of stationary waterjet for the removal of coating material fro m the substrate is investigated analytically and experimentally. In th e analysis, the cleaning width as a function of standoff distance, wat er pressure, and nozzle radius is derived by considering the structure of waterjet and the cleaning mechanism. Also derived are the relation s of the optimal cleaning standoff distance and maximum cleaning width to the critical cleaning standoff distance, and how the water pressur e and nozzle radius affect this critical standoff distance. These deri ved analytical relations are verified with experimental results.