Energy conservation and management

By Support

Energy conservation and management

Research projects: Bubble plume/ bubble flow/ multiphase flow (literature review)

Bubble plume is observed in various engineering disciplines: industrial, material, chemical, mechanical, and environmental applications…

Bubble plume is an effective way to control the density and transportation of surface-floating substances, and it is expected to be an effective tool to support the function of an oil fence since it can generate a strong and wide surface flow over the bubble generation system, and it can damp the wave motion. Gas injection through a bottom nozzle is very popular and has wide applications. Hence, many researchers have carried out extensive model experiments by focusing on the flow field’s structure using air bubbles. The bubble plume, which is a typical form of bubble flow, is known as one of the transport phenomena that can drive a large-scale convection due to the buoyancy of the bubbles. The technique of using a surface flow generated by the bubble plume is utilized as an effective way to control and collect surface floating substances in naval systems, lakes, seas, rivers, oceans especially the oil layer formed during large oil spill accidents. Furthermore, the surface flows generated by bubble plumes are key phenomena in various kinds of reactors, engineering processes and industrial processes handling a free surface. The motivation of my recent research is to broaden the knowledge of the relationship between the parameters of bubbly flow that are demanded to describe the characteristics of the bubble generating surface flow. Such flow depends on the gas flow rate, the bubble size (mean bubble diameter), void fraction, bubble velocity, the internal two-phase flow structure of the bubble plume and the distance between the bubble generator and the free surface which is equivalent to the water height in the experimental tank.

Energy conservation and management

We have the following parameters

D: Bubble size (diameter)

H: Water height in the tank (the distance between the bubble generator and the free surface)

V: babble velocity

a: Void fraction

Qg: gas volume flow rate

T: water temperature

The relationship between the parameters of bubble plume/bubbly flow that are demanded to describe the characteristics of the bubble generating surface flow: Surface flow = ¦(Qg, D, V, H, a, T)

Research: collect information and papers

  • What are the other parameters that affect the flow?
  • What is the relationship between all parameters?
  • What are the applications of bubble plume?
  • Draw the above figure after adding the flow meter and the compressor (use software).
  • Download all references that you use and send me the references
  • Do not use any reference with my name Dr. Hassan.