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Vofi — A library to initialize the volume fraction scalar field

2015; Elsevier BV; Volume: 200; Linguagem: Inglês

10.1016/j.cpc.2015.10.026

1879-2944

S. Bnà, Sandro Manservisi, Ruben Scardovelli, Philip Yecko, Stéphane Zaleski,

Lattice Boltzmann Simulation Studies

The Vofi library has been developed to accurately calculate the volume fraction field demarcated by implicitly-defined fluid interfaces in Cartesian grids with cubic cells. The method enlists a number of algorithms to compute the integration limits and the local height function, that is the integrand of a double Gauss–Legendre integration with a variable number of nodes. Tests in two and three dimensions are presented to demonstrate the accuracy of the method and are provided in the software distribution with C/C++ and FORTRAN interfaces. Program title:Vofi Catalogue identifier: AEYT_v1_0 Program summary URL:http://cpc.cs.qub.ac.uk/summaries/AEYT_v1_0.html Program obtainable from: CPC Program Library, Queen’s University, Belfast, N. Ireland Licensing provisions: Standard CPC licence, http://cpc.cs.qub.ac.uk/licence/licence.html No. of lines in distributed program, including test data, etc.: 94963 No. of bytes in distributed program, including test data, etc.: 1679223 Distribution format: tar.gz Programming language: C, with C++ and FORTRAN interfaces. Computer: Any computer with a C compiler. Operating system: Tested on x86 with Linux (openSUSE 13.1, Ubuntu 12.04) and Mac OS X. Has the code been vectorized or parallelized?: The code does not need any change to be used in parallel with domain decomposition, as done for example in the Paris-Simulator code, http://parissimulator.sf.net, that is massively parallel and uses the Vofi library. Word size: 64 bits Classification: 4.11. Nature of problem: The library computes the volume fraction of a cubic grid cell cut by an interface described by an implicit function. Solution method: The library computes the integration limits along two coordinate directions and the local height function, that is the integrand of a double Gauss–Legendre integration with a variable number of nodes. Restrictions: Cartesian grids with cubic cells. Running time: Fractions of a second for a grid cell cut by the interface.