Effect of bubble size on the rising behavior in pure water medium

Abstract The phenomenon of rising bubbles in pure water is an important aspect the bubble and liquid interactions. Due to several forces that act on accompanied by pressures inside outside bubble, behaviour may vary depending a few parameters such as characteristics medium. In general, increase occurs following drag motion determined coefficient but under certain conditions also move rolling pattern. Both are related other worked particularly buoyancy force. velocity them be different due mechanism types motions. Rolling can assumed does not occur for very small so there only relation between size velocity. Several observations sizes have shown linear relationship Meanwhile, larger becomes faster almost seems exponential relation. results higher force rise more easily reach surface. This paper aimed prove will show size. Our experimental observation has linearity occurred bubble. gradient quite predicting pattern various sizes.