School of Mathematics and Statistics - Theses

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The dynamics of water bells

Button, Eleanor ( 2005-11)

When a vertically aimed liquid jet impacts on the underside of a horizontal plate, it spreads radially to an abrupt point, and then suddenly falls of its own accord. The falling film may coalesce to form a water bell, and by changing the flow rate of the impinging jet, many beautiful shapes are attained. We present an original formulation for the critical radius where the fluid departs the plate. This solution agrees remarkably well with experiments. We also give an approximation for the evolving water bell shape under a changing flow regime.