An adaptive fast multipole moment technique for calculating flow around two-dimensional bluff bodies

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Abstract

A two-dimensional adaptive fast multipole moment technique is used to solve the random vortex formulation of the Navier-Stokes equations. The number of arithmetic operations required to solve the system is order (N) and thus allows large numbers of discrete vortices to be used. This ensures the randomness associated with the method does not introduce large errors. Solutions are presented for flow around blunt flat plates, one short and the other long, with and without free-stream oscillations. The results are compared with experimentally observed flows and show that the method successfully simulates leading-edge separation bubble development, small-scale shear layer instabilities and large-scale vortex shedding from both leading and trailing edges. (Authors)

Original languageEnglish
Journal[No source information available]
Publication statusPublished - 1 Jan 1992
Externally publishedYes

Cite this

@article{6bbd7988b387435fbc176be61db4b56d,
title = "An adaptive fast multipole moment technique for calculating flow around two-dimensional bluff bodies",
abstract = "A two-dimensional adaptive fast multipole moment technique is used to solve the random vortex formulation of the Navier-Stokes equations. The number of arithmetic operations required to solve the system is order (N) and thus allows large numbers of discrete vortices to be used. This ensures the randomness associated with the method does not introduce large errors. Solutions are presented for flow around blunt flat plates, one short and the other long, with and without free-stream oscillations. The results are compared with experimentally observed flows and show that the method successfully simulates leading-edge separation bubble development, small-scale shear layer instabilities and large-scale vortex shedding from both leading and trailing edges. (Authors)",
author = "M. Rudman and Thompson, {M. C.} and K. Hourigan",
year = "1992",
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day = "1",
language = "English",
journal = "[No source information available]",

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TY - JOUR

T1 - An adaptive fast multipole moment technique for calculating flow around two-dimensional bluff bodies

AU - Rudman, M.

AU - Thompson, M. C.

AU - Hourigan, K.

PY - 1992/1/1

Y1 - 1992/1/1

N2 - A two-dimensional adaptive fast multipole moment technique is used to solve the random vortex formulation of the Navier-Stokes equations. The number of arithmetic operations required to solve the system is order (N) and thus allows large numbers of discrete vortices to be used. This ensures the randomness associated with the method does not introduce large errors. Solutions are presented for flow around blunt flat plates, one short and the other long, with and without free-stream oscillations. The results are compared with experimentally observed flows and show that the method successfully simulates leading-edge separation bubble development, small-scale shear layer instabilities and large-scale vortex shedding from both leading and trailing edges. (Authors)

AB - A two-dimensional adaptive fast multipole moment technique is used to solve the random vortex formulation of the Navier-Stokes equations. The number of arithmetic operations required to solve the system is order (N) and thus allows large numbers of discrete vortices to be used. This ensures the randomness associated with the method does not introduce large errors. Solutions are presented for flow around blunt flat plates, one short and the other long, with and without free-stream oscillations. The results are compared with experimentally observed flows and show that the method successfully simulates leading-edge separation bubble development, small-scale shear layer instabilities and large-scale vortex shedding from both leading and trailing edges. (Authors)

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