Webb I.R.Arora M.Roy R.A.Payne S.J.Coussios C.-C.STEPHEN JOHN PAYNE2022-05-242022-05-242010https://www.scopus.com/inward/record.uri?eid=2-s2.0-78649976510&doi=10.1017%2fS0022112010003472&partnerID=40&md5=a411f1b5c8c828ae89ea3ffe1de4a943https://scholars.lib.ntu.edu.tw/handle/123456789/611826The effect of time-variant temperature on the dynamics of a single gas bubble in a liquid is investigated. With changes in temperature, several physical parameters controlling bubble behaviour change including surface tension, diffusivity, vapour pressure and gas solubility. A single-bubble model is formulated and a numerical simulation implemented to model the radius-time profile of a bubble, across a range of initial bubble sizes and rates of heating, taking into account the aforementioned parameter temperature dependences. The model is validated experimentally in a xanthan gum gel phantom, tracking the evolution of the bubbles using digital photography and an image analysis sizing algorithm. It is shown that the natural tendency for a bubble to dissolve can be reversed by an increase in temperature, but only above a certain radius-dependent threshold rate of heating. ? 2010 Cambridge University Press.Bubble behaviourBubble dynamicsBubble modelsBubble sizeDiffusivitiesDigital photographyGas bubbleGas solubilityGel phantomNumerical simulationPhysical parametersSizing algorithmsTemperature dependenceTemperature fieldTime variantVapour pressuresXanthan GumBehavioral researchComputer simulationHeatingSurface tensionTracking (position)Dynamicsalgorithmbubblefluid dynamicsgasnumerical modelsimulationtemperature gradient[SDGs]SDG7journal article10.1017/S00221120100034722-s2.0-78649976510