Abstract
Numerical simulations are used to shorten the tool development process for precise electrochemical machining. However, these simulations are often based on simplified models that disregard bubble transport or have not been validated. Therefore, this paper presents optical in situ measurements of gas bubble transport during precise electrochemical machining. These measurements, by means of particle image velocimetry on an upscaled working gap in accordance with the principle of dynamic similarity, are then compared to simulation results. It was observed that due to the coalescence of the gas bubbles, the bubble size grows rapidly and obstructs the fluid flow.
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