Verification assessment of piston boundary conditions for Lagrangian simulation of compressible flow similarity solutions
Abstract
This work is concerned with the use of similarity solutions of the compressible flow equations as benchmarks or verification test problems for finite-volume compressible flow simulation software. In practice, this effort can be complicated by the infinite spatial/temporal extent of many candidate solutions or “test problems.” Methods can be devised with the intention of ameliorating this inconsistency with the finite nature of computational simulation; the exact strategy will depend on the code and problem archetypes under investigation. For example, self-similar shock wave propagation can be represented in Lagrangian compressible flow simulations as rigid boundary-driven flow, even if no such “piston” is present in the counterpart mathematical similarity solution. The purpose of this work is to investigate in detail the methodology of representing self-similar shock wave propagation as a piston-driven flow in the context of various test problems featuring simple closed-form solutions of infinite spatial/temporal extent. The closed-form solutions allow for the derivation of similarly closed-form piston boundary conditions (BCs) for use in Lagrangian compressible flow solvers. Finally, the consequences of utilizing these BCs (as opposed to directly initializing the self-similar solution in a computational spatial grid) are investigated in terms of common code verification analysis metrics (e.g., shock strength/position errorsmore »
- Authors:
-
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Mississippi State Univ., Mississippi State, MS (United States)
- Univ. of Maine, Orono, ME (United States)
- Publication Date:
- Research Org.:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1352360
- Report Number(s):
- LA-UR-15-20171
Journal ID: ISSN 2377-2158
- Grant/Contract Number:
- AC52-06NA25396
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Verification, Validation and Uncertainty Quantification
- Additional Journal Information:
- Journal Volume: 1; Journal Issue: 2; Journal ID: ISSN 2377-2158
- Publisher:
- ASME
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 97 MATHEMATICS AND COMPUTING
Citation Formats
Ramsey, Scott D., Ivancic, Philip R., and Lilieholm, Jennifer F. Verification assessment of piston boundary conditions for Lagrangian simulation of compressible flow similarity solutions. United States: N. p., 2015.
Web. doi:10.1115/1.4030929.
Ramsey, Scott D., Ivancic, Philip R., & Lilieholm, Jennifer F. Verification assessment of piston boundary conditions for Lagrangian simulation of compressible flow similarity solutions. United States. https://doi.org/10.1115/1.4030929
Ramsey, Scott D., Ivancic, Philip R., and Lilieholm, Jennifer F. Thu .
"Verification assessment of piston boundary conditions for Lagrangian simulation of compressible flow similarity solutions". United States. https://doi.org/10.1115/1.4030929. https://www.osti.gov/servlets/purl/1352360.
@article{osti_1352360,
title = {Verification assessment of piston boundary conditions for Lagrangian simulation of compressible flow similarity solutions},
author = {Ramsey, Scott D. and Ivancic, Philip R. and Lilieholm, Jennifer F.},
abstractNote = {This work is concerned with the use of similarity solutions of the compressible flow equations as benchmarks or verification test problems for finite-volume compressible flow simulation software. In practice, this effort can be complicated by the infinite spatial/temporal extent of many candidate solutions or “test problems.” Methods can be devised with the intention of ameliorating this inconsistency with the finite nature of computational simulation; the exact strategy will depend on the code and problem archetypes under investigation. For example, self-similar shock wave propagation can be represented in Lagrangian compressible flow simulations as rigid boundary-driven flow, even if no such “piston” is present in the counterpart mathematical similarity solution. The purpose of this work is to investigate in detail the methodology of representing self-similar shock wave propagation as a piston-driven flow in the context of various test problems featuring simple closed-form solutions of infinite spatial/temporal extent. The closed-form solutions allow for the derivation of similarly closed-form piston boundary conditions (BCs) for use in Lagrangian compressible flow solvers. Finally, the consequences of utilizing these BCs (as opposed to directly initializing the self-similar solution in a computational spatial grid) are investigated in terms of common code verification analysis metrics (e.g., shock strength/position errors and global convergence rates).},
doi = {10.1115/1.4030929},
journal = {Journal of Verification, Validation and Uncertainty Quantification},
number = 2,
volume = 1,
place = {United States},
year = {Thu Dec 10 00:00:00 EST 2015},
month = {Thu Dec 10 00:00:00 EST 2015}
}
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Works referencing / citing this record:
A boundary condition for Guderley’s converging shock problem
journal, December 2019
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- Physics of Fluids, Vol. 31, Issue 12