Vascular bubble models, which present a realistic biophysical approach, hold great promise for devising suitable diver decompression procedures. Nanobubbles were found to nucleate on a flat hydrophobic surface, expanding to form bubbles after decompression. Such active hydrophobic spots (AHS) were formed from lung surfactants on the luminal aspect of ovine blood vessels. Many of the phenomena o...

Electrofuels (e-fuels) produced from renewable electricity and carbon sources have gained significant attention in recent years as promising alternatives to fossil fuels for the transportation sector. However, highly volatile e-fuels, such short-chain oxymethylene ethers (OMEx) are prone flash vaporization phenomena, which is associated with formation growth of vapor bubbles, followed by explos...

Zhou, Shuyi. M.S.M.E., Purdue University, December 2017. Experimental and Numerical Study on Microbubble Coalescence Dynamics. Major Professor: Likun Zhu. This thesis work aims to make a better knowledge on the insights of physics on microbubble coalescence process, using experimental and numerical approaches. The neck growth and bubble surface wave propagation at the early stage of coalescence...

Using molecular dynamics, we study the nucleation and stability of bulk nanobubble clusters. We study the formation, growth, and final size of bulk nanobubbles. We find that, as long as the bubble-bubble interspacing is small enough, bulk nanobubbles are stable against dissolution. Simple diffusion calculations provide an excellent match with the simulation results, giving insight into the reas...

In this research, the effect of bubble surface area flux, Sb, and particle size on flotation rate constant, k, of pyrite (FeS2) particles was studied using bubble-particle interactions. The bubble-particle collision, attachment and detachment efficiencies were calculated under different flow regimes. The k increased with increase in the collision efficiency and decreas...

In an experimental investigation of the transient processes that occur when a single droplet of butane at the superheat limit vaporizes explosively, short-exposure photographs and fast-response pressure measurements have been used to construct a description of the complete explosion process. It is observed that only a single bubble forms within the drop during each explosion, and that the growt...

Several papers explain why asset bubbles are observed when growth is large. These differ in the role of bubble, used to provide liquidities or as collateral a borrowing constraint. We compare liquidity and roles an overlapping generations model. When bubble deterministic, equilibrium identical under these two roles, implying that same mechanism explains crowding-in effect on growth. With stocha...