Computational framework for coupling compressible and low Mach number codes

Yulia Peet, Sanjiva K. Lele

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

A hybrid multicode computational method is developed that allows combining compressible and low Mach number codes into a single computational solver. The proposed methodology can be used for integrated simulations of multicomponent engineering problems. The unsteady coupling between the two codes is performed via exchanging time-dependent state information through the interfaces using overlapping meshes. The proposed coupling procedure is validated on laminar steady and unsteady test problems. Both constant-density and variable-density regimes of the low Mach number code are investigated. Results of the test cases performed in frameworks of one-way coupling and two-way coupling are documented. Several methods of implementation of interface conditions for the compressible code are compared by looking at the levels of dilatation, as well as numerical errors. The injection method (when all the variables are simply transformed from one code to another through an interpolation procedure) is chosen for its superior stability, accuracy, and simplicity of implementation. Numerical results for the coupled calculations obtained with the injection method show good agreement with both standalone calculations and analytical solutions.

Original languageEnglish (US)
Pages (from-to)1990-2001
Number of pages12
JournalAIAA Journal
Volume46
Issue number8
DOIs
StatePublished - Aug 2008
Externally publishedYes

Fingerprint

Mach number
Convergence of numerical methods
Computational methods
Interpolation

ASJC Scopus subject areas

  • Aerospace Engineering

Cite this

Computational framework for coupling compressible and low Mach number codes. / Peet, Yulia; Lele, Sanjiva K.

In: AIAA Journal, Vol. 46, No. 8, 08.2008, p. 1990-2001.

Research output: Contribution to journalArticle

Peet, Yulia ; Lele, Sanjiva K. / Computational framework for coupling compressible and low Mach number codes. In: AIAA Journal. 2008 ; Vol. 46, No. 8. pp. 1990-2001.
@article{5dad92460d064a9ab5fbc478c23e37fb,
title = "Computational framework for coupling compressible and low Mach number codes",
abstract = "A hybrid multicode computational method is developed that allows combining compressible and low Mach number codes into a single computational solver. The proposed methodology can be used for integrated simulations of multicomponent engineering problems. The unsteady coupling between the two codes is performed via exchanging time-dependent state information through the interfaces using overlapping meshes. The proposed coupling procedure is validated on laminar steady and unsteady test problems. Both constant-density and variable-density regimes of the low Mach number code are investigated. Results of the test cases performed in frameworks of one-way coupling and two-way coupling are documented. Several methods of implementation of interface conditions for the compressible code are compared by looking at the levels of dilatation, as well as numerical errors. The injection method (when all the variables are simply transformed from one code to another through an interpolation procedure) is chosen for its superior stability, accuracy, and simplicity of implementation. Numerical results for the coupled calculations obtained with the injection method show good agreement with both standalone calculations and analytical solutions.",
author = "Yulia Peet and Lele, {Sanjiva K.}",
year = "2008",
month = "8",
doi = "10.2514/1.32884",
language = "English (US)",
volume = "46",
pages = "1990--2001",
journal = "AIAA Journal",
issn = "0001-1452",
publisher = "American Institute of Aeronautics and Astronautics Inc. (AIAA)",
number = "8",

}

TY - JOUR

T1 - Computational framework for coupling compressible and low Mach number codes

AU - Peet, Yulia

AU - Lele, Sanjiva K.

PY - 2008/8

Y1 - 2008/8

N2 - A hybrid multicode computational method is developed that allows combining compressible and low Mach number codes into a single computational solver. The proposed methodology can be used for integrated simulations of multicomponent engineering problems. The unsteady coupling between the two codes is performed via exchanging time-dependent state information through the interfaces using overlapping meshes. The proposed coupling procedure is validated on laminar steady and unsteady test problems. Both constant-density and variable-density regimes of the low Mach number code are investigated. Results of the test cases performed in frameworks of one-way coupling and two-way coupling are documented. Several methods of implementation of interface conditions for the compressible code are compared by looking at the levels of dilatation, as well as numerical errors. The injection method (when all the variables are simply transformed from one code to another through an interpolation procedure) is chosen for its superior stability, accuracy, and simplicity of implementation. Numerical results for the coupled calculations obtained with the injection method show good agreement with both standalone calculations and analytical solutions.

AB - A hybrid multicode computational method is developed that allows combining compressible and low Mach number codes into a single computational solver. The proposed methodology can be used for integrated simulations of multicomponent engineering problems. The unsteady coupling between the two codes is performed via exchanging time-dependent state information through the interfaces using overlapping meshes. The proposed coupling procedure is validated on laminar steady and unsteady test problems. Both constant-density and variable-density regimes of the low Mach number code are investigated. Results of the test cases performed in frameworks of one-way coupling and two-way coupling are documented. Several methods of implementation of interface conditions for the compressible code are compared by looking at the levels of dilatation, as well as numerical errors. The injection method (when all the variables are simply transformed from one code to another through an interpolation procedure) is chosen for its superior stability, accuracy, and simplicity of implementation. Numerical results for the coupled calculations obtained with the injection method show good agreement with both standalone calculations and analytical solutions.

UR - http://www.scopus.com/inward/record.url?scp=49249092494&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=49249092494&partnerID=8YFLogxK

U2 - 10.2514/1.32884

DO - 10.2514/1.32884

M3 - Article

AN - SCOPUS:49249092494

VL - 46

SP - 1990

EP - 2001

JO - AIAA Journal

JF - AIAA Journal

SN - 0001-1452

IS - 8

ER -