Towards multi-phase flow simulations in the PDE framework Peano

Abstract

In this work, we present recent enhancements and new functionalities of our flow solver in the partial differential equation framework Peano. We start with an introduction including an overview of the Peano development and a short description of the basic concepts of Peano and the flow solver in Peano concerning the underlying structured but adaptive Cartesian grids, the data structure and data access optimisation, and spatial and time discretisation of the flow solver. The new features cover geometry interfaces and additional application functionalities. The two geometry interfaces, a triangulation-based description supported by the tool preCI-CE and a built-in geometry using geometry primitives such as cubes, spheres, or tetrahedra allow for the efficient treatment of complex and changing geometries, an essential ingredient for most application scenarios. The new application functionality concerns a coupled heat-flow problem and two-phase flows. We present numerical examples, performance and validation results for these new functionalities.

The Peano Software—Parallel, Automaton-based, Dynamically Adaptive Grid Traversals

“…The first generation was a set of proof-of-concept codes tackling various challenges with different core code routines ( [19,51], e.g.). A second generation fused these concepts into one code base made primarily for CFD-type applications though some generic software rationale have been reported ( [17,18,74,77] and others). The third generation is a complete rewrite that focuses on an abstraction from any application, offers different memory organization schemes and emphasizes scalability.…”

Untitled

“…The first generation was a set of proof-of-concept codes tackling various challenges with different core code routines (e.g., Bungartz et al (2006) and ). A second generation fused these concepts into one code base made primarily for CFD-type applications, although some generic software rationale have been reported ((Bungartz et al 2011((Bungartz et al , 2010bWeinzierl 2009;Weinzierl and Mehl 2011) and others). The third generation is a complete rewrite that focuses on an abstraction from any application, offers different memory organization schemes and emphasizes scalability.…”