2015
DOI: 10.1016/j.jsv.2014.11.040
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Aeroacoustics of rectangular T-junctions subject to combined grazing and bias flows – An experimental investigation

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Cited by 15 publications
(2 citation statements)
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“…Karlsson and Åbom 14 and Holmberg et al 15 introduced a technique, where a 3-port can be evaluated with a 3 × 3 scattering matrix (SM) representing the reflection and transmission coefficients of the system R and T for the selected state variables. With the application to thermoacoustics in RQL combustors in mind it is convenient to introduce the acoustic Riemann invariants f = 1 / 2 false( p / ρ ¯ c + u normal′ false) and g = 1 / 2 false( p / ρ ¯ c u normal′ false) as state variables to describe the network elements in terms of harmonic acoustic disturbances that propagate in co-flow and counter-flow direction.…”
Section: The Lean Secondary Zone As a Thermoacoustic 3-portmentioning
confidence: 99%
“…Karlsson and Åbom 14 and Holmberg et al 15 introduced a technique, where a 3-port can be evaluated with a 3 × 3 scattering matrix (SM) representing the reflection and transmission coefficients of the system R and T for the selected state variables. With the application to thermoacoustics in RQL combustors in mind it is convenient to introduce the acoustic Riemann invariants f = 1 / 2 false( p / ρ ¯ c + u normal′ false) and g = 1 / 2 false( p / ρ ¯ c u normal′ false) as state variables to describe the network elements in terms of harmonic acoustic disturbances that propagate in co-flow and counter-flow direction.…”
Section: The Lean Secondary Zone As a Thermoacoustic 3-portmentioning
confidence: 99%
“…The basic technique for the network treatment of 3-ports was proposed by Karlsson and Åbom 14 and Holmberg et al 15 . They describe the 3-port by a 3 × 3 matrix which can be determined by three acoustically independent measurements, which provide the equations for the 9 unknown complex matrix elements.…”
Section: Thermoacoustic Theory Of Rql Combustorsmentioning
confidence: 99%