Numerical investigation of the gas jet formation immediately after opening a champagne bottle

Abstract

The goal of this thesis is to deliver a numerical simulation concerning the emissive behavior of pressurized CO2 gas inside a Champagne bottle in the first few milliseconds after the cork popping. This system was proposed and experimentally performed by Liger-Belair, Cordier, and Georges (Science Advances 5, 2019). The mentioned goal, the embedding of existing literature and the overall approach regarding the proposed system are introduced in section 2. Chapter 3 describes the theoretical background needed to create the simulation, such as the Euler equations of a compressible fluid in cylindrical coordinates in their non-dimensional form. The next section explains the numerical discretization via finite volume methods to update the solution for each time step and introduces the CLAWPACK software package, which provides the framework of this thesis' Python and Fortran programs. The last part of chapter 4 determines the different settings of the simulation, for example explaining the Roe solver, and finally section 5 illustrates and explains the characteristics of the flow without any obstacle and secondly the effects of an incorporated cork on the fluid flow and vise versa.