This example shows a simulation of a retracting fluid dispenser. The main concern is the exact volume of fluid dispensed and how much is drawn back into the dispenser. The nozzle itself is only 1 millimeter in diameter and at this scale surface tension becomes important as it alone can dictate the amount of fluid deposited onto the substrate. Using cylindrical coordinates with a specified contact angle between the resin-like fluid, the dispenser nozzle, and the substrate, the model is able to account for these effects. In addition, the General Moving Object model was used to simulate the dispenser motion. Modeling the complexities of small, transient, free surface flows along with moving objects can be easily accomplished using FLOW-3D. For more information about modeling surface tension, visit [ Ссылка ]

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