The following literature may be useful for your research
hermodynamic expressions are derived for the system relative Gibbs free energy, and the relative Gibbs free energy per bubble, for all possible equilibrium bubble states that can form in a soft slightly rigid material, initially supersaturated with a dissolved inert gas (N(2)). While the thermodynamic manipulations are exact, the final expressions are approximate, due to an approximation made in deriving the expression for the elastic free energy of a soft material containing more than a single bubble. The expressions predict that provided the shear modulus of the soft material is not negligibly small, free energy wells which stabilize small gas bubbles for finite periods of time exist in such materials. This is consistent with a previous calculation, based solely on the bubble pressure equation, which resulted in the conjecture that bubbles found in soft materials with some rigidity (or shear resistance) are likely to be small. The possible relevance of this to the field of decompression sickness is outlined.
Ref: Free energy wells for small gas bubbles in soft deformable materials.
Goldman S1.
Journal of Chemical Physics, 2010 Apr 28;132(16):164509. doi: 10.1063/1.3394940.
Bubbles are indeed a very good mean to produce turbulence in liquid phase. The bubble induced turbulence can be utilized towards mixing thus promoting heat/mass transfer between the phases. A good example is bubble column reactor which is widely used in Fisher-Tropsch synthesis process.
Thanks for your answers. I would like to more know about bubble column reactor. Has anybody some information about it?
Bubble column has been around for long time and many studies are reported including CFD modelling. Check these literature for a start:
1. Shah et al.1982, Design Parameters Column Reactors Estimations for Bubble Column Reactors, AlChE Journal (Vol. 28, No. 3)
2. Kantarci et al., 2005, Bubble column reactors, Volume 40, Issue 7, pp. 2263–2283.
There's a series of papers from early 1990 to mid 2000 by R.Krishna on bubble column reactor which would be great to have a read through.
- Badges
- Science topic
- Similar topics
- Physical Sciences
- Energy