Imperial College London
Alternate

DrDavidMoxey

Faculty of Engineering, Department of Aeronautics

Honorary Senior Lecturer
 
 
 
//

Contact

 

+44 (0)20 7594 5129d.moxey Website

 
 
//

Location

 

363Roderic Hill BuildingSouth Kensington Campus

//

Summary

 

Publications

Citation

BibTex format

@article{Marcon:2020:10.1002/nme.6529,
author = {Marcon, J and Castiglioni, G and Moxey, D and Sherwin, SJ and Peiro, J},
doi = {10.1002/nme.6529},
journal = {International Journal for Numerical Methods in Engineering},
pages = {5405--5425},
title = {rp-adaptation for compressible flows},
url = {http://dx.doi.org/10.1002/nme.6529},
volume = {121},
year = {2020}
}
Download

RIS format (EndNote, RefMan)

TY  - JOUR
AB  - We present an rp-adaptation strategy for high-fidelity simulation of compressible inviscid flows with shocks. The mesh resolution in regions of flow discontinuities is increased by using a variational optimiser to r-adapt the mesh and cluster degrees of freedom there. In regions of smooth flow, we locally increase or decrease the local resolution through increasing or decreasing the polynomial order of the elements, respectively. This dual approach allows us to take advantage of the strengths of both methods for best computational performance, thereby reducing the overall cost of the simulation. The adaptation workflow uses a sensor for both discontinuities and smooth regions that is cheap to calculate, but the framework is general and could be used in conjunction with other feature-based sensors or error estimators. We demonstrate this proof-of-concept using two geometries at transonic and supersonic flow regimes. The method has been implemented in the open-source spectral/hp element framework Nektar++, and its dedicated high-order mesh generation tool NekMesh. The results show that the proposed rp-adaptation methodology is a reasonably cost-effective way of improving accuracy.
AU  - Marcon,J
AU  - Castiglioni,G
AU  - Moxey,D
AU  - Sherwin,SJ
AU  - Peiro,J
DO  - 10.1002/nme.6529
EP  - 5425
PY  - 2020///
SN  - 0029-5981
SP  - 5405
TI  - rp-adaptation for compressible flows
T2  - International Journal for Numerical Methods in Engineering
UR  - http://dx.doi.org/10.1002/nme.6529
UR  - http://arxiv.org/abs/1909.10973
UR  - http://hdl.handle.net/10044/1/82628
VL  - 121
ER  -
Download