| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2013: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2012: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Research Abstract |
We design and build a cascade traveling wave thermoacoustic amplifier, in which there is not only the traveling wave phasing between pressure and velocity oscillations, but also there is specific acoustic impedance which is greater than that freely traveling acoustic waves and that can be achieved for all the regenerators aligned in series. In order to realize such acoustic fields, the transfer matrix for the unit component consisting of a differentially heated regenerator and adjacent short resonators is analyzed, and the eigenvector and the eigenvalue are numerically determined. As a result, the maximum second law efficiency of the regenerator reaches 63.9% in the present model.
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