Investigating prescriptions for artificial resistivity in smoothed particle magnetohydrodynamics

J. Wurster; M. R. Bate; D. J. Price; T. S. Tricco

Investigating prescriptions for artificial resistivity in smoothed particle magnetohydrodynamics

J. Wurster, M. R. Bate, D. J. Price, T. S. Tricco

School of Physics and Astronomy

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

In numerical simulations, artificial terms are applied to the evolution equations for stability. To prove their validity, these terms are thoroughly tested in test problems where the results are well known. However, they are seldom tested in production-quality simulations at high resolution where they interact with a plethora of physical and numerical algorithms. We test three artificial resistivities in both the Orszag-Tang vortex and in a star formation simulation. From the Orszag-Tang vortex, the Price et. al. (2017) artificial resistivity is the least dissipative thus captures the density and magnetic features; in the star formation algorithm, each artificial resistivity algorithm interacts differently with the sink particle to produce various results, including gas bubbles, dense discs, and migrating sink particles. The star formation simulations suggest that it is important to rely upon physical resistivity rather than artificial resistivity for convergence.

Original language	English
Title of host publication	Proceedings SPHERIC 2017
Subtitle of host publication	12th International SPHERIC Workshop
Editors	A.J.C. Crespo, M.G. Gesteira, C. Altomare
Place of Publication	Spain
Publisher	Universidade de Vigo
Publication status	Published - 13 Jun 2017
Event	12th International Smoothed Particle Hydrodynamics European Research Interest Community (SPHERIC) Workshop - Ourense, Spain Duration: 13 Jun 2017 → 15 Jun 2017 Conference number: 12 http://spheric2017.uvigo.es/

Workshop

Workshop	12th International Smoothed Particle Hydrodynamics European Research Interest Community (SPHERIC) Workshop
Abbreviated title	SPHERIC
Country/Territory	Spain
City	Ourense
Period	13/06/17 → 15/06/17
Internet address	http://spheric2017.uvigo.es/

Access to Document

https://arxiv.org/abs/1706.07721

Cite this

@inproceedings{2b96849b7c1a4dec80b76928538e80e5,

title = "Investigating prescriptions for artificial resistivity in smoothed particle magnetohydrodynamics",

abstract = "In numerical simulations, artificial terms are applied to the evolution equations for stability. To prove their validity, these terms are thoroughly tested in test problems where the results are well known. However, they are seldom tested in production-quality simulations at high resolution where they interact with a plethora of physical and numerical algorithms. We test three artificial resistivities in both the Orszag-Tang vortex and in a star formation simulation. From the Orszag-Tang vortex, the Price et. al. (2017) artificial resistivity is the least dissipative thus captures the density and magnetic features; in the star formation algorithm, each artificial resistivity algorithm interacts differently with the sink particle to produce various results, including gas bubbles, dense discs, and migrating sink particles. The star formation simulations suggest that it is important to rely upon physical resistivity rather than artificial resistivity for convergence. ",

author = "J. Wurster and Bate, {M. R.} and Price, {D. J.} and Tricco, {T. S.}",

year = "2017",

month = jun,

day = "13",

language = "English",

editor = "A.J.C. Crespo and M.G. Gesteira and C. Altomare",

booktitle = "Proceedings SPHERIC 2017",

publisher = "Universidade de Vigo",

note = "12th International Smoothed Particle Hydrodynamics European Research Interest Community (SPHERIC) Workshop, SPHERIC ; Conference date: 13-06-2017 Through 15-06-2017",

url = "http://spheric2017.uvigo.es/",

}

Wurster, J, Bate, MR, Price, DJ & Tricco, TS 2017, Investigating prescriptions for artificial resistivity in smoothed particle magnetohydrodynamics. in AJC Crespo, MG Gesteira & C Altomare (eds), Proceedings SPHERIC 2017: 12th International SPHERIC Workshop. Universidade de Vigo, Spain, 12th International Smoothed Particle Hydrodynamics European Research Interest Community (SPHERIC) Workshop, Ourense, Spain, 13/06/17. <https://arxiv.org/abs/1706.07721>

Investigating prescriptions for artificial resistivity in smoothed particle magnetohydrodynamics. / Wurster, J.; Bate, M. R.; Price, D. J. et al.
Proceedings SPHERIC 2017: 12th International SPHERIC Workshop. ed. / A.J.C. Crespo; M.G. Gesteira; C. Altomare. Spain: Universidade de Vigo, 2017.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Investigating prescriptions for artificial resistivity in smoothed particle magnetohydrodynamics

AU - Wurster, J.

AU - Bate, M. R.

AU - Price, D. J.

AU - Tricco, T. S.

N1 - Conference code: 12

PY - 2017/6/13

Y1 - 2017/6/13

N2 - In numerical simulations, artificial terms are applied to the evolution equations for stability. To prove their validity, these terms are thoroughly tested in test problems where the results are well known. However, they are seldom tested in production-quality simulations at high resolution where they interact with a plethora of physical and numerical algorithms. We test three artificial resistivities in both the Orszag-Tang vortex and in a star formation simulation. From the Orszag-Tang vortex, the Price et. al. (2017) artificial resistivity is the least dissipative thus captures the density and magnetic features; in the star formation algorithm, each artificial resistivity algorithm interacts differently with the sink particle to produce various results, including gas bubbles, dense discs, and migrating sink particles. The star formation simulations suggest that it is important to rely upon physical resistivity rather than artificial resistivity for convergence.

AB - In numerical simulations, artificial terms are applied to the evolution equations for stability. To prove their validity, these terms are thoroughly tested in test problems where the results are well known. However, they are seldom tested in production-quality simulations at high resolution where they interact with a plethora of physical and numerical algorithms. We test three artificial resistivities in both the Orszag-Tang vortex and in a star formation simulation. From the Orszag-Tang vortex, the Price et. al. (2017) artificial resistivity is the least dissipative thus captures the density and magnetic features; in the star formation algorithm, each artificial resistivity algorithm interacts differently with the sink particle to produce various results, including gas bubbles, dense discs, and migrating sink particles. The star formation simulations suggest that it is important to rely upon physical resistivity rather than artificial resistivity for convergence.

M3 - Conference contribution

BT - Proceedings SPHERIC 2017

A2 - Crespo, A.J.C.

A2 - Gesteira, M.G.

A2 - Altomare, C.

PB - Universidade de Vigo

CY - Spain

T2 - 12th International Smoothed Particle Hydrodynamics European Research Interest Community (SPHERIC) Workshop

Y2 - 13 June 2017 through 15 June 2017

ER -

Investigating prescriptions for artificial resistivity in smoothed particle magnetohydrodynamics

Abstract

Workshop

Access to Document

Fingerprint

Cite this