Event Title

Determining Flow in a Cylindrical Conduit using a 2-Dimensional Fast Fourier Transform

Major

Physics

Faculty Mentor

Kenneth C. McGill

Abstract

An acoustic array with 128 equally spacedtransducers is used to collect acoustic data to determine rate of flow in a pipe. A speed of sound of 350 m/s in air is assumed. To determine to rate of flow in a cylindrical conduit, a Two-Dimensional Fast Fourier Transform (2DFFT) is used to convert spatial and temporal data into a frequency versus wavenumber plot. A Two- Dimensional Fast Fourier Transform has the ability to separate out a right to left flowing wave from a left to right flowing wave. This plot can be used to determine the flow by finding the slope of the major diagonal line.

Session Name:

Poster Presentation Session #2 - Poster #02

Start Date

10-4-2015 12:15 PM

End Date

10-4-2015 1:00 PM

Location

HSB 3rd Floor Student Commons

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Apr 10th, 12:15 PM Apr 10th, 1:00 PM

Determining Flow in a Cylindrical Conduit using a 2-Dimensional Fast Fourier Transform

HSB 3rd Floor Student Commons

An acoustic array with 128 equally spacedtransducers is used to collect acoustic data to determine rate of flow in a pipe. A speed of sound of 350 m/s in air is assumed. To determine to rate of flow in a cylindrical conduit, a Two-Dimensional Fast Fourier Transform (2DFFT) is used to convert spatial and temporal data into a frequency versus wavenumber plot. A Two- Dimensional Fast Fourier Transform has the ability to separate out a right to left flowing wave from a left to right flowing wave. This plot can be used to determine the flow by finding the slope of the major diagonal line.