Hydrogen Bubble Flow Visualization System

Chris Scholten

The hydrogen bubbleflow visualization system was created because of a need for labs in the Heat Transfer and Fluid Dynamics class. It is designed to show the different types of flows water has around different test objects.

The requirements of the system involve easy setup, low cost, compact size, dependability, steady flow, and most of all, good visual flow. For a visual flow, hydrogen bubbles were used: oxygenating the water by sending electrical current through it. Most of the parts were made from scraps or low cost everyday products. It was constructed of as few pieces as possible to keep the system uncomplicated.

A very thin platinum wire in salt water was used to create the hydrogen bubbles that had about 35 volts running through it. Steady laminar flow was created by water pouring out of the bottom of a basin, a flow straightening wall and a gate to adjust the fluid flow out of the system. A water slide was used to keep the system compact and quiet while a pump recycled the water.

The final design was quite simple yet worked fairly well. All of the requirements were fulfilled but the project wasn't completed do to lack of time. With more time experiments with the different bubble patterns should be done to optimize the systems capabilities.