Towards High-order Accurate Numerical Simulation of Unsteady Flow Physics over Domains with Large Deformation

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Towards High-order Accurate Numerical Simulation of Unsteady Flow Physics over Domains with Large Deformation.pdf (1.59 MB)

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https://arc.aiaa.org/doi/abs/10.2514/6.2019-1400

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https://doi.org/10.2514/6.2019-1400
 http://hdl.handle.net/11603/12767

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UMBC Mechanical Engineering Department
UMBC Faculty Collection
UMBC Student Collection

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Date

2019

Type of Work

conference papers and proceedings preprints
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Citation of Original Publication

Meilin Yu, Kan Liu, and Lai Wang. "Towards high-order accurate numerical simulation of unsteady flow physics over domains with large deformation", AIAA Scitech 2019 Forum, AIAA SciTech Forum, (AIAA 2019-1400) , https://doi.org/10.2514/6.2019-1400

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© 2019 AIAA

Subjects

flux reconstruction (FR) formulation
unsteady flow simulation with dynamic grid algorithms
Navier-Stokes equations in an arbitrary Lagrangian-Eulerian (ALE) format for numerical simulation on moving domains
algebraic grid smoothing and grid regeneration methods to resolve domains with large deformation

Abstract

This paper presents the development of a high-order flux reconstruction (FR) formulation for unsteady flow simulation with dynamic grid algorithms. Specifically, the high-order FR formulation for the Navier-Stokes equations in an arbitrary Lagrangian-Eulerian (ALE) format is developed for numerical simulation on moving domains. A hybrid moving grid algorithm consisting of algebraic grid smoothing and grid regeneration methods is developed to resolve domains with large deformation. The ‘dist-mesh’ technique is used for mesh regeneration, and local Lagrange interpolation within finite elements is used for flow field reconstruction. Several unsteady flow cases are studied to verify the effectiveness of the new method developed in this work.