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| Content Provider | The American Society of Mechanical Engineers (ASME) Digital Collection |
|---|---|
| Author | Bin, Jonghoon William, S. Oates Taira, Kunihiko |
| Copyright Year | 2014 |
| Abstract | A model for two-dimensional graphene-based thermoacoutic membranes is investigated analytically and validated numerically in this study. In one-dimension, the temperature and the pressure variables are analytically determined by decoupling the two variables in the governing equations due to the large disparity between length scales. We further extend the one-dimensional findings to three dimensions. The three-dimensional pressure fluctuation produced by the surface temperature variation is determined with the aid of the acoustic piston model. Through the one and three-dimensional model analysis, the dependence of acoustic pressure as a function of frequency is studied and the acoustic response with respect to the frequency shows different characteristics when assuming Dirichlet (temperature) or Neumann (heat flux) boundary conditions. The general thermoacoustic model is then applied to a graphene-on-paper sound device. Probabilistic Bayesian method coupled with Monte Carlo Markov Chain (MCMC) algorithms is used to optimize model parameters and to analyze model parameter uncertainty. Excellent correlations of thermoacoustic behavior is predicted by the model which provides insight into heat transport mechanisms associated with generating sound from thermally cycling graphene at high frequencies. |
| Sponsorship | Aerospace Division |
| File Format | |
| ISBN | 9780791846148 |
| DOI | 10.1115/SMASIS2014-7600 |
| Volume Number | Volume 1: Development and Characterization of Multifunctional Materials; Modeling, Simulation and Control of Adaptive Systems; Structural Health Monitoring; Keynote Presentation |
| Conference Proceedings | ASME 2014 Conference on Smart Materials, Adaptive Structures and Intelligent Systems |
| Language | English |
| Publisher Date | 2014-09-08 |
| Publisher Place | Newport, Rhode Island, USA |
| Access Restriction | Subscribed |
| Subject Keyword | Actuators Chain Temperature Membranes Uncertainty Three-dimensional models Dimensions Acoustics Modeling Pressure Heat flux Sound pressure Pistons Heat Algorithms Graphene Boundary-value problems |
| Content Type | Text |
| Resource Type | Article |
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