Bubble columns and dispersed flows (gas-liquid) are widely used in the chemical, biochemical and oil and gas industry. Often, vessels are aerated to provide reactants (oxygen) or to extract products (CO2). The performance of this equipment is dependent on the hydrodynamics, which are complex by nature and not fully understood. A 400 mm x 200 mm x 2600 mm (W x D x H) rectangular bubble column was made to study the hydrodynamics of

bubbly flows. The dispersed phase is introduced by means of a needle sparger, containing 392 needles in total, and gas fractions up to 35% could be achieved. Your task will be to analyse the performance of the sparger by means of high speed imaging. Images were acquired by a high speed camera at a rate of 500-5000 Hz and the bubble sizes needs to be determined by analysing the images using MATLAB. The outcome of the project should include a report where the bubble sizes and bubble size distributions are given for a set of experiments.

The structure of a research report is usually as following:
1. Introduction (DONE I need to check)
explain the topic, why the research, propose research question
2. Theory / Literature review (DONE I need to check)
Brief overview of the theory important for this topic (and what will be used later on in the report).
3. Experimental methods (DONE I need to check)

description of experimental facility and measurement methods
4. Results and discussion ( 4 to 6 pages )
Describe (and plot) the results of the experiments. The dependent variable (outcome) as function of independent variables (settings). Discuss the results and the trends and compare with literature. (( the result is in MATLAB code & Excel ))

5. Conclusion &Recommendations ( 1 page )
> Conclude the results and highlight main findings. Recommend steps and experiments for following research.