Unsteady, laminar flow simulations using the nonlinear disturbance equations

R. P. Hansen, L. N. Long, P. J. Morris

Research output: Contribution to conferencePaper

2 Citations (Scopus)

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 languageEnglish (US)
StatePublished - Dec 1 2000
Event6th Aeroacoustics Conference and Exhibit, 2000 - Lahaina, HI, United States
Duration: Jun 12 2000Jun 14 2000

Other

Other6th Aeroacoustics Conference and Exhibit, 2000
CountryUnited States
CityLahaina, HI
Period6/12/006/14/00

Fingerprint

Wall flow
Flow simulation
Viscous flow
Circular cylinders
laminar flow
Laminar flow
Flow fields
disturbances
Boundary conditions
Scattering
Computer simulation
Testing
wall flow
simulation
viscous flow
circular cylinders
flow distribution
boundary conditions
formulations
scattering

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Acoustics and Ultrasonics

Cite this

Hansen, R. P., Long, L. N., & Morris, P. J. (2000). Unsteady, laminar flow simulations using the nonlinear disturbance equations. Paper presented at 6th Aeroacoustics Conference and Exhibit, 2000, Lahaina, HI, United States.
Hansen, R. P. ; Long, L. N. ; Morris, P. J. / Unsteady, laminar flow simulations using the nonlinear disturbance equations. Paper presented at 6th Aeroacoustics Conference and Exhibit, 2000, Lahaina, HI, United States.
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Hansen, RP, Long, LN & Morris, PJ 2000, 'Unsteady, laminar flow simulations using the nonlinear disturbance equations', Paper presented at 6th Aeroacoustics Conference and Exhibit, 2000, Lahaina, HI, United States, 6/12/00 - 6/14/00.

Unsteady, laminar flow simulations using the nonlinear disturbance equations. / Hansen, R. P.; Long, L. N.; Morris, P. J.

2000. Paper presented at 6th Aeroacoustics Conference and Exhibit, 2000, Lahaina, HI, United States.

Research output: Contribution to conferencePaper

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

AU - Hansen, R. P.

AU - Long, L. N.

AU - Morris, P. J.

PY - 2000/12/1

Y1 - 2000/12/1

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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Hansen RP, Long LN, Morris PJ. Unsteady, laminar flow simulations using the nonlinear disturbance equations. 2000. Paper presented at 6th Aeroacoustics Conference and Exhibit, 2000, Lahaina, HI, United States.