Van der Geld, CWM2015-03-052015-03-052014van der Geld, CWM 2014, 'Bubble deformation in nucleate boiling', Paper presented to the 10th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Orlando, Florida, 14-16 July, 2014.97817759206873http://hdl.handle.net/2263/43867Various aspects of boiling bubble deformation and oscillation have been examined or re-examined with an Euler-Lagrange approach. Anisotropic bubble deformation is easily converted into the acoustically powerful isotropic breathing mode. The structure of the added mass matrix involved explains this conversion. With a perturbation analysis, resonance cases in which this conversion is amplified or in which several different bubble sizes at a time are excited have been identified. The effects of finite disturbance amplitude and the proximity of the wall on oscillation frequency have been quantified. Experimental validation is reported of frequency reduction by the presence of the wall or by fixation of the bubble foot to a wall.17 pagesenUniversity of PretoriaBoiling bubble deformationBoiling bubble deformation and oscillationEuler-LagrangeAnisotropic bubble deformationIsotropic breathingBubble sizesFinite disturbance amplitudeOscillation frequencyFixation of the bubble foot to a wallPresentation