Development of meshless numerical method for simulation of compressible two-phase flowRana, Khush Bakhat (Avtor) Šarler, Božidar (Mentor) computational fluid dynamicstwo-phase gas-liquid flowcompressible flowphase-field methodmeshless methoddiffuse approximate methodPISO algorithmgas-focused micro-jetThe meshless diffuse approximate method and phase-field method have been combined to simulate compressible two-phase gas-liquid flow problems. The gas and the liquid behave in a Newtonian way. The model employs coupled mass, momentum, energy, equation of state and Cahn-Hilliard equations. The Navier-Stokes part is solved by pressure implicit with the splitting of operators pressure-velocity coupling. The space discretisation is performed by weighted least squares approximation on the nodes of overlapping subdomains, polynomial shape functions of second order and Gaussian weights. The numerical model's versatility is shown through its application to a wide range of single-phase and two-phase compressible and incompressible two-dimensional and axisymmetric test cases. A detailed parametric study of the influence of node density, shape function order, Gaussian weight’s shape and the local subdomain size on the meshless solution was performed. The accuracy and robustness of the developed numerical methods are verified by comparing the meshless results of the test cases with the classical mesh-based finite volume method studies performed with the open-source codes Gerris and OpenFOAM® and previously existing studies. A good agreement is achieved. The conducted research is directed towards numerically modelling gas-focused micro-jets used in serial femtosecond crystallography experiments.[K. B. Rana]20252025-01-31 07:30:06Doktorsko delo/naloga166922UDK: 532:544.27:004.942(043.3)VisID: 270415COBISS_ID: 224913923sl