Method of suppressing combustion instabilities using a resonator adopting counter-bored holes
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United States of America Patent
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Jun 23, 2009
Grant Date -
Jun 7, 2007
app pub date -
Jan 30, 2007
filing date -
Sep 21, 2000
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Abstract
A resonator for damping pressure waves or instabilities in a system supported by acoustic energy wherein the resonator adopts the use of counter-bored openings on the downstream side of the resonator within the flow path of the system. The resonator includes a first member and a second member where the second member includes a plurality of openings therethrough with each hole having a counter-bore on its upstream side. The first member has a size substantially smaller than the diameter of said flow path and a first plurality of openings therethrough. The openings are in fluid communication with the flow path. The second member has a size generally equal to the first member and a second plurality of openings therethrough, which openings are in fluid communication with the flow path.
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