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
Externally published	Yes

Bibliographical note

Funding Information:
P.K. acknowledges the financial support from the Office of Naval Research (ONR) through grant N000141712520. R.S. acknowledges the support from the ONR grant N000141912461. S.P. acknowledges the support through the National Science Foundation through the award number 1936432.

Publisher Copyright:
© 2021 Elsevier Ltd

Keywords

Carbon nanotubes
Sound pressure level, Sonar projector
Thermal diffusion length
Thermoacoustics

Publisher link

10.1016/j.jsv.2021.115940

Find It

Find It at U of M Libraries

Cite this

@article{a8311dfbcc24421a810801e7fef006e5,

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.",

keywords = "Carbon nanotubes, Sound pressure level, Sonar projector, Thermal diffusion length, Thermoacoustics",

author = "Prashant Kumar and Rammohan Sriramdas and Aliev, {Ali E.} and Blottman, {John B.} and Mayo, {Nathanael K.} and Baughman, {Ray H.} and Shashank Priya",

note = "Funding Information: P.K. acknowledges the financial support from the Office of Naval Research (ONR) through grant N000141712520. R.S. acknowledges the support from the ONR grant N000141912461. S.P. acknowledges the support through the National Science Foundation through the award number 1936432. Publisher Copyright: {\textcopyright} 2021 Elsevier Ltd",

year = "2021",

month = apr,

day = "28",

doi = "10.1016/j.jsv.2021.115940",

language = "English (US)",

volume = "498",

journal = "Journal of Sound and Vibration",

issn = "0022-460X",

publisher = "Academic Press",

}

TY - JOUR

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

N1 - Funding Information: P.K. acknowledges the financial support from the Office of Naval Research (ONR) through grant N000141712520. R.S. acknowledges the support from the ONR grant N000141912461. S.P. acknowledges the support through the National Science Foundation through the award number 1936432. Publisher Copyright: © 2021 Elsevier Ltd

PY - 2021/4/28

Y1 - 2021/4/28

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.

KW - Carbon nanotubes

KW - Sound pressure level, Sonar projector

KW - Thermal diffusion length

KW - Thermoacoustics

UR - http://www.scopus.com/inward/record.url?scp=85100262556&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85100262556&partnerID=8YFLogxK

U2 - 10.1016/j.jsv.2021.115940

DO - 10.1016/j.jsv.2021.115940

M3 - Article

AN - SCOPUS:85100262556

SN - 0022-460X

VL - 498

JO - Journal of Sound and Vibration

JF - Journal of Sound and Vibration

M1 - 115940

ER -

Understanding the low frequency response of carbon nanotube thermoacoustic projectors

Abstract

Bibliographical note

Keywords

Publisher link

Find It

Other files and links

Fingerprint

Cite this