| Mon February 20th 2023 11:00 – 12:00 ZH286 | Seminar | Compressible multi-phase and/or multi-material flow simulation with real-fluid thermodynamic closure Manolis Gavaises |
Details:Flows that involve interaction of gases, liquids and solids at pressure and temperature conditions inducing material behaviour that significantly deviates from the commonly used ideal gas and incompressible liquid assumptions are realised in many applications involving bubbles and droplets. Often such flow processes involve fluids with non-Newtonian behaviour. Numerical methodologies for such fluids and the interaction between the co-existing media are challenging. The presentation gives a short introduction of the relevant methodologies and numerical codes developed at City University for relevant cases. Indicative results, including validation studies against relevant experimental data, will be presented for the following sample cases: (i) cavitation and friction-induced heating in micro-channels operating under extreme pressure drops (up to 450MPa), (ii) transcritical and supercritical liquid jet atomisation and mixing, (iii) cavitation suppression by viscoelastic additives and (iv) and impact/pressure wave-induced and ultrasound-induced bubble collapse and soft-tissue interactions. | ||
