A nonconservative nonlinear flowfield splitting method for 3-D unsteady fluid dynamics

Lyle N. Long

Research output: Contribution to conferencePaper

7 Scopus citations

Abstract

This paper describes a new way to write and solve the governing equations of fluid dynamics that is very well suited to aeroacoustics problems. The flow field variables are split into a mean and a fluctuating part, and then inserted into the governing equations. If the mean flowfield satisfies the steady-state governing equations, then the resulting equations can be written in a very convenient form. These equations are then solved using a method that is second or fourth order accurate in space and time, on a Cartesian grid. Several aeroacoustic benchmark problems are solved, some duct propagation problems are presented, and a long- range scattering problem is solved. The code is written in Fortran-90 using the Message Passing Interface (MPI), and performance results are presented for a cluster of workstations

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

All Science Journal Classification (ASJC) codes

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

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    Long, L. N. (2000). A nonconservative nonlinear flowfield splitting method for 3-D unsteady fluid dynamics. Paper presented at 6th Aeroacoustics Conference and Exhibit, 2000, Lahaina, HI, United States.