Rapid Vapor Bubble Growth during Decompression of Superheated Water

Numerical simulation of growth of a vapor bubble during flow boiling of water in a microchannel

The present study is performed to numerically analyze the growth of a vapor bubble during flow of water through a microchannel. The complete Navier– Stokes equations, along with continuity and energy equations, are solved using the SIMPLER (semi-implicit method for pressure-linked equations revised) method. The liquid–vapor interface is captured using the level set technique. The microchannel i...

SIMILARITY OF VAPOR AND Gf.S BUBBLE GROWTH

The bubble growth problems in both boiling and electrolysis are nondimensionalized in such a way as to make them identical. Nonuniformity of the initial temperature and the possibility of a measure of subcooling in the ambient liquid are considered. The nondimensiona/ization makes it possible to compare gas-bubble growth theory with vaporbubble growth data. Such a comparison is made for the dat...

ICMM2004 – xxxx NUMERICAL SIMULATION OF GROWTH OF A VAPOR BUBBLE DURING FLOW BOILING OF WATER IN A MICROCHANNEL

The present study is performed to numerically analyze growth of a vapor bubble during flow of water in a microchannel. The complete Navier-Stokes equations along with continuity and energy equations are solved using the SIMPLER method. The liquid vapor interface is captured using the level set technique. The microchannel is 200 microns in square cross-section and the bubble is placed at the cen...

Bubble Nucleation in Superheated Liquid-Liquid Emulsions

An investigation of the process by which bubbles form in superheated liquid-liquid emulsions is reported. A theoretical model for the rate of bubble nucleation is developed that is valid for any binary liquid system. Because of the interesting "microexplosion" phenomenon postulated to occur during combustion of fuel/water emulsions, special attention is focused on hydrocarbon/ water/surfactant ...

Air bubble growth in water.