Displaying similar documents to “Study of a low Mach nuclear core model for two-phase flows with phase transition I: stiffened gas law”

A numerical study of non-cavitating and cavitating liquid flow around a hydrofoil

François Beux, Maria-Vittoria Salvetti, Alexey Ignatyev, Ding Li, Charles Merkle, Edoardo Sinibaldi (2005)

ESAIM: Mathematical Modelling and Numerical Analysis - Modélisation Mathématique et Analyse Numérique

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The results of a workshop concerning the numerical simulation of the liquid flow around a hydrofoil in non-cavitating and cavitating conditions are presented. This workshop was part of the conference “Mathematical and Numerical aspects of Low Mach Number Flows” (2004) and was aimed to investigate the capabilities of different compressible flow solvers for the low Mach number regime and for flows in which incompressible and supersonic regions are simultaneously present. Different physical...

Numerical simulation of the two-phase flow through the energetical equipment

Nejedlý, Jan, Vaibar, Roman

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A mathematical model of homogeneous and heterogeneous condensation in the turbomachinery is presented. The mathematical model consists of conservation laws of mass, momentum, energy and conservation laws for the description of the rise and growth of water droplets with the homogeneous and heterogeneous condensation. The relaxation method is introduced for solving the two-dimensional unsteady flow through the turbine cascades. The method is developed for unstructured grids and is applied...

Numerical investigation of dynamic capillary pressure in two-phase flow in porous medium

Radek Fučík, Jiří Mikyška (2011)

Mathematica Bohemica

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In order to investigate effects of the dynamic capillary pressure-saturation relationship used in the modelling of a flow in porous media, a one-dimensional fully implicit numerical scheme is proposed. The numerical scheme is used to simulate an experimental procedure using a measured dataset for the sand and fluid properties. Results of simulations using different models for the dynamic effect term in capillary pressure-saturation relationship are presented and discussed.

Numerical Modeling of the Stream Dynamics for River Channels with Complex Spatial Configuration

V. A. Shlychkov (2009)

Mathematical Modelling of Natural Phenomena

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Mathematical modeling provides a particularly important tool for studying the stream runoff formation processes, and its role is enhanced in the case of a sparse, obsolete monitoring network characteristic of most regions of Siberia. When analyzing spatio-temporal regularities of the water and sediment runoff in river systems, serious problems are caused by lack of the basic hydrological model capable of handling real-time data of hydrological measurements.
Calculations of unsteady...

Numerical modelling of flow in lower urinary tract using high-resolution methods

Brandner, Marek, Egermaier, Jiří, Kopincová, Hana, Rosenberg, Josef

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We propose a new numerical scheme based on the finite volumes to simulate the urethra flow based on hyperbolic balance law. Our approach is based on the Riemann solver designed for the augmented quasilinear homogeneous formulation. The scheme has general semidiscrete wave–propagation form and can be extended to arbitrary high order accuracy. The first goal is to construct the scheme, which is well balanced, i.e. maintains not only some special steady states but all steady states which...