Customer Login Shopping Cart
Library Subscription: Guest
Home Archives Officers Future meetings American Society of Thermal and Fluids Engineering

ISSN Online: 2379-1748

ISBN Print: 978-1-56700-472-4 (Flash Drive)

ISBN Online: 978-1-56700-471-7

3rd Thermal and Fluids Engineering Conference (TFEC)
March, 4–7, 2018, Fort Lauderdale, FL, USA

FLUID INTERFACE CAPTURING ON PARALLEL ADAPTIVE OCTREE GRIDS

Get access pages 185-194
DOI: 10.1615/TFEC2018.cfd.022338

Abstract

An interface capturing scheme on parallel adaptive octree grids was developed. A one-cell thick moving interface within the volume-of-fluid interface tracking scheme is used to mark and advect the liquid-vapor/gas interface. An octree representation of the grid is used to capture the gradients near the interface while preserving a cell aspect ratio of unity in order to maintain the accuracy of the interface reconstruction algorithm. The grid can be adapted based on location and proximity to the fluid interface, gradients of volume fraction and any other scalars that are appropriate for a given test case. Further, this adaptive octree grid is partitioned using the Metis package to improve the computational efficiency while maintaining the required accuracy. Several test cases were run to validate the advection scheme, coupling of inertia, gravity and surface tension forces and multiple interface interactions. Specific test cases include Enright deformation test both in 2 and 3 dimensions, Rayleigh-Taylor instability, bubble rise in an infinitely long domain and bubble coalescence behavior. Simulations are conducted on multiple processors to demonstrate the scalability of the numerical algorithms and results are compared against single processor runs, other numerical studies and experimental data where available.
Home Archives Officers Future meetings American Society of Thermal and Fluids Engineering English Русский 中文 Português Help Contact Us Back to ASTFE