Thermal Acoustic Oscillations: Short Review and Countermeasures

Putselyk, S.

doi:10.1088/1757-899x/755/1/012080

Cited by 2 publications

(1 citation statement)

References 32 publications

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“…Empirical methods for suppressing Taconis oscillations were discussed by Luck and Trepp and Putselyk and developed into a list of guidelines [10,11], including the following:…”

Section: Introductionmentioning

confidence: 99%

Initiation and suppression of Taconis oscillations in tubes with junctions and variable-diameter tube segments

Shenton,

Matveev,

Leachman

2024

IOP Conf. Ser.: Mater. Sci. Eng.

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Taconis oscillations represent spontaneous, usually unwanted excitations of acoustic modes in narrow pipes going from warm ambient environment into cold cryogenic space. These oscillations can drastically magnify heat leak and create vibrations undesirable for measurement instruments. In this study, modifications of a classical constant-diameter-tube Taconis setup are investigated. Specifically, variable-diameter tubes were found to strongly affect excitation, with wider tube segments in the warm environment encouraging oscillations, while additions of properly chosen pipe network configurations can supress the oscillations. The low-amplitude thermoacoustic theory, previously developed for thermoacoustic engines and refrigerators, was adapted for modelling Taconis phenomena, accounting for finite-length segments with temperature evolution where thermal-to-acoustic energy conversion takes place. Experiments were conducted using primarily hydrogen as a working fluid to validate theoretical predictions. With the rapid development of various hydrogen storage and transfer systems, it is expected that Taconis oscillations may become an issue, and this study provides an initial modelling framework to assess this phenomenon in hydrogen systems.

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“…Empirical methods for suppressing Taconis oscillations were discussed by Luck and Trepp and Putselyk and developed into a list of guidelines [10,11], including the following:…”

Section: Introductionmentioning

confidence: 99%

Initiation and suppression of Taconis oscillations in tubes with junctions and variable-diameter tube segments

Shenton,

Matveev,

Leachman

2024

IOP Conf. Ser.: Mater. Sci. Eng.

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Influence of Porous Inserts and Compact Resonators on Onset of Taconis Oscillations

Matveev

2024

Journal of Vibration and Acoustics

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Taconis oscillations represent excitation of acoustic modes due to large thermal gradients inside narrow tubes penetrating cryogenic vessels from warm ambient environment. These oscillations are usually harmful, as they may drastically increase heat leakage into cryogenic vessels and result in strong vibrations of measuring instruments. Placing a porous material inside a tube with a goal to increase acoustic damping or attaching a small resonator to the main tube are some of possible ways to suppress or mitigate Taconis effects. However, when the porous inserts are positioned in locations with large temperature gradients or the resonator parameters are selected incorrectly, these components may augment thermal-to-acoustic energy conversion and enhance Taconis oscillations. A low-amplitude thermoacoustic model has been extended and applied in this study to determine effects of the insert location and pore radius, as well as the resonator dimensions, on the onset of Taconis phenomena in a hydrogen-filled tube of relevance to lines used in cryogenic hydrogen storage tanks. The presented findings can assist cryogenic specialists interested in suppressing or exciting Taconis oscillations.

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Thermal Acoustic Oscillations: Short Review and Countermeasures

Cited by 2 publications

References 32 publications

Initiation and suppression of Taconis oscillations in tubes with junctions and variable-diameter tube segments

Initiation and suppression of Taconis oscillations in tubes with junctions and variable-diameter tube segments

Influence of Porous Inserts and Compact Resonators on Onset of Taconis Oscillations

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