Unsteady, laminar flow simulations using the nonlinear disturbance equations

R. P. Hansen; Lyle Norman Long; P. J. Morris

doi:10.2514/6.2000-1981

Unsteady, laminar flow simulations using the nonlinear disturbance equations

R. P. Hansen, Lyle Norman Long, P. J. Morris

Research output: Contribution to conference › Paper › peer-review

5 Scopus citations

Abstract

The results of numerical simulations using the Nonlinear Disturbance Equations (NLDE) for viscous test cases in laminar flow are presented. The NLDE are implemented in a two-dimensional, finite volume code to test the algorithm's properties for viscous, wall-bounded flows. Testing focused on the accuracy of unsteady phenomena. An overview of the method, details on the implementation of boundary conditions, and results for a benchmark scattering problem and viscous flow over a circular cylinder are presented. The results show this method converges to a time accurate periodic condition using a variety of inputs for the mean flow field, and under some circumstances may converge substantially faster to the periodic state compared to the same code using a standard Navier-Stokes formulation.

Original language	English (US)
DOIs	https://doi.org/10.2514/6.2000-1981
State	Published - 2000
Event	6th Aeroacoustics Conference and Exhibit, 2000 - Lahaina, HI, United States Duration: Jun 12 2000 → Jun 14 2000

Other

Other	6th Aeroacoustics Conference and Exhibit, 2000
Country/Territory	United States
City	Lahaina, HI
Period	6/12/00 → 6/14/00

All Science Journal Classification (ASJC) codes

Aerospace Engineering
Electrical and Electronic Engineering
Mechanical Engineering
Acoustics and Ultrasonics

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10.2514/6.2000-1981

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title = "Unsteady, laminar flow simulations using the nonlinear disturbance equations",

abstract = "The results of numerical simulations using the Nonlinear Disturbance Equations (NLDE) for viscous test cases in laminar flow are presented. The NLDE are implemented in a two-dimensional, finite volume code to test the algorithm's properties for viscous, wall-bounded flows. Testing focused on the accuracy of unsteady phenomena. An overview of the method, details on the implementation of boundary conditions, and results for a benchmark scattering problem and viscous flow over a circular cylinder are presented. The results show this method converges to a time accurate periodic condition using a variety of inputs for the mean flow field, and under some circumstances may converge substantially faster to the periodic state compared to the same code using a standard Navier-Stokes formulation.",

author = "Hansen, {R. P.} and Long, {Lyle Norman} and Morris, {P. J.}",

year = "2000",

doi = "10.2514/6.2000-1981",

language = "English (US)",

note = "6th Aeroacoustics Conference and Exhibit, 2000 ; Conference date: 12-06-2000 Through 14-06-2000",

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TY - CONF

T1 - Unsteady, laminar flow simulations using the nonlinear disturbance equations

AU - Hansen, R. P.

AU - Long, Lyle Norman

AU - Morris, P. J.

PY - 2000

Y1 - 2000

N2 - The results of numerical simulations using the Nonlinear Disturbance Equations (NLDE) for viscous test cases in laminar flow are presented. The NLDE are implemented in a two-dimensional, finite volume code to test the algorithm's properties for viscous, wall-bounded flows. Testing focused on the accuracy of unsteady phenomena. An overview of the method, details on the implementation of boundary conditions, and results for a benchmark scattering problem and viscous flow over a circular cylinder are presented. The results show this method converges to a time accurate periodic condition using a variety of inputs for the mean flow field, and under some circumstances may converge substantially faster to the periodic state compared to the same code using a standard Navier-Stokes formulation.

AB - The results of numerical simulations using the Nonlinear Disturbance Equations (NLDE) for viscous test cases in laminar flow are presented. The NLDE are implemented in a two-dimensional, finite volume code to test the algorithm's properties for viscous, wall-bounded flows. Testing focused on the accuracy of unsteady phenomena. An overview of the method, details on the implementation of boundary conditions, and results for a benchmark scattering problem and viscous flow over a circular cylinder are presented. The results show this method converges to a time accurate periodic condition using a variety of inputs for the mean flow field, and under some circumstances may converge substantially faster to the periodic state compared to the same code using a standard Navier-Stokes formulation.

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U2 - 10.2514/6.2000-1981

DO - 10.2514/6.2000-1981

M3 - Paper

AN - SCOPUS:85088185902

T2 - 6th Aeroacoustics Conference and Exhibit, 2000

Y2 - 12 June 2000 through 14 June 2000

ER -

Unsteady, laminar flow simulations using the nonlinear disturbance equations

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All Science Journal Classification (ASJC) codes

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