Advanced data transfer strategies for overset computational methods

•A flexible framework for overset data transfer is presented.•Cloud-based radial basis function interpolation consistently attains high accuracy.•The cloud-based approach is stencil-free and eliminates orphan points.•The cloud-based approach demonstrates improved preservation of flow physics. A data...

Full description

Saved in:
Bibliographic Details
Published in:Computers & fluids 2015-08, Vol.117, p.88-102
Main Authors: Quon, Eliot W., Smith, Marilyn J.
Format: Article
Language:English
Subjects:
Computational fluid dynamics
Data transfer
Data transfer (computers)
Extrapolation
Fluid flow
Interpolation
Overset grids
Permissible error
Preserves
Radial basis function interpolation
Strategy
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:•A flexible framework for overset data transfer is presented.•Cloud-based radial basis function interpolation consistently attains high accuracy.•The cloud-based approach is stencil-free and eliminates orphan points.•The cloud-based approach demonstrates improved preservation of flow physics. A data transfer strategy applicable to overset grid configurations has been developed that improves interpolation and extrapolation accuracy and eliminates orphan points. Traditional trilinear mappings based on interpolation stencils are replaced with a “cloud”-based algorithm which retains no dependence on grid connectivity. A variable number of donor points was sourced from a single grid in the vicinity of a receptor point, permitting consistent treatment of orphan points in the data transfer method. This cloud-based interpolation methodology demonstrates the ability to preserve flow-field features for configurations both with and without adequate mesh overlap. The approach eliminates problems associated with orphan points and reduces transient conservation errors by an order of magnitude.
ISSN:0045-7930
1879-0747
DOI:10.1016/j.compfluid.2015.04.023