Understanding the low frequency response of carbon nanotube thermoacoustic projectors

Prashant Kumar; Rammohan Sriramdas; Ali E. Aliev; John B. Blottman; Nathanael K. Mayo; Ray H. Baughman; Shashank Priya

doi:10.1016/j.jsv.2021.115940

Understanding the low frequency response of carbon nanotube thermoacoustic projectors

Prashant Kumar, Rammohan Sriramdas, Ali E. Aliev, John B. Blottman, Nathanael K. Mayo, Ray H. Baughman, Shashank Priya

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

Carbon nanotube sheets exhibiting extremely low heat capacity have enabled the development of thermoacoustic projectors (TAPs) for a wide range of frequencies (1- 10⁶ Hz). The sound pressure level of carbon nanotube (CNT) based TAPs is proportional to the frequency, resulting in a reduced performance at low frequencies. Hence, there is a need to determine the governing parameters of TAPs that can be used to increase performance at low frequencies. A comprehensive, validated model is presented, involving structure-fluid-acoustic interactions, which sheds light on the physical behavior of CNT-based TAPs. The theoretical and numerical model incorporates all the controlling steps, from input electrical power to vibroacoustic wave generation in an outer fluid media. Using this model, the impact of the governing parameters on TAP performance has been studied.

Original language	English (US)
Article number	115940
Journal	Journal of Sound and Vibration
Volume	498
DOIs	https://doi.org/10.1016/j.jsv.2021.115940
State	Published - Apr 28 2021

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Mechanics of Materials
Acoustics and Ultrasonics
Mechanical Engineering

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10.1016/j.jsv.2021.115940

Cite this

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title = "Understanding the low frequency response of carbon nanotube thermoacoustic projectors",

abstract = "Carbon nanotube sheets exhibiting extremely low heat capacity have enabled the development of thermoacoustic projectors (TAPs) for a wide range of frequencies (1- 106 Hz). The sound pressure level of carbon nanotube (CNT) based TAPs is proportional to the frequency, resulting in a reduced performance at low frequencies. Hence, there is a need to determine the governing parameters of TAPs that can be used to increase performance at low frequencies. A comprehensive, validated model is presented, involving structure-fluid-acoustic interactions, which sheds light on the physical behavior of CNT-based TAPs. The theoretical and numerical model incorporates all the controlling steps, from input electrical power to vibroacoustic wave generation in an outer fluid media. Using this model, the impact of the governing parameters on TAP performance has been studied.",

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T1 - Understanding the low frequency response of carbon nanotube thermoacoustic projectors

AU - Kumar, Prashant

AU - Sriramdas, Rammohan

AU - Aliev, Ali E.

AU - Blottman, John B.

AU - Mayo, Nathanael K.

AU - Baughman, Ray H.

AU - Priya, Shashank

PY - 2021/4/28

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N2 - Carbon nanotube sheets exhibiting extremely low heat capacity have enabled the development of thermoacoustic projectors (TAPs) for a wide range of frequencies (1- 106 Hz). The sound pressure level of carbon nanotube (CNT) based TAPs is proportional to the frequency, resulting in a reduced performance at low frequencies. Hence, there is a need to determine the governing parameters of TAPs that can be used to increase performance at low frequencies. A comprehensive, validated model is presented, involving structure-fluid-acoustic interactions, which sheds light on the physical behavior of CNT-based TAPs. The theoretical and numerical model incorporates all the controlling steps, from input electrical power to vibroacoustic wave generation in an outer fluid media. Using this model, the impact of the governing parameters on TAP performance has been studied.

AB - Carbon nanotube sheets exhibiting extremely low heat capacity have enabled the development of thermoacoustic projectors (TAPs) for a wide range of frequencies (1- 106 Hz). The sound pressure level of carbon nanotube (CNT) based TAPs is proportional to the frequency, resulting in a reduced performance at low frequencies. Hence, there is a need to determine the governing parameters of TAPs that can be used to increase performance at low frequencies. A comprehensive, validated model is presented, involving structure-fluid-acoustic interactions, which sheds light on the physical behavior of CNT-based TAPs. The theoretical and numerical model incorporates all the controlling steps, from input electrical power to vibroacoustic wave generation in an outer fluid media. Using this model, the impact of the governing parameters on TAP performance has been studied.

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Understanding the low frequency response of carbon nanotube thermoacoustic projectors

Abstract

All Science Journal Classification (ASJC) codes

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