Pengaruh Konfigurasi Geometri Buffer Resonator Tipe-H terhadap Intensitas Bunyi

R. Yosi Aprian Sari, Jurusan Pendidikan Fisika, FMIPA, Universitas Negeri Yogyakarta, Indonesia
Agung Bambang Setio Utomo, Departemen Fisika, FMIPA, Universitas Gadjah Mada, Indonesia
Mitrayana Mitrayana, Departemen Fisika, FMIPA, Universitas Gadjah Mada, Indonesia
Danang Lelono, Departemen Ilmu Komputer dan Elektronika, FMIPA, Universitas Gadjah Mada, Indonesia

Abstract


Intensitas bunyi dari perambatan akustik pada resonator tipe-H dipengaruhi oleh konfigurasi saluran buffer. Bertambahnya panjang buffer tidak lebih berpengaruh terhadap intensitas bunyi dibandingkan dengan perubahan diameter saluran. Hal ini disebabkan adanya head loss, yaitu energi gelombang yang datang tidak semuanya ditransmisikan, tapi sebagian dipantulkan sehingga akan mengurangi intensitas bunyi yang ditransmisikan. Efek head loss ini terjadi di antaranya berupa gesekan pada sistem saluran dan tumbukan karena sambungan atau diskontinuitas saluran. Dalam penelitian ini dilakukan simulasi perambatan akustik dalam resonator tipe H menggunakan metode matriks transmisi dan persamaan Bernoulli. Dengan memvariasi panjang dan jari-jari buffer diperoleh nilai simulasi dari frekuensi resonansi resonator tipe H tersebut sebesar 1631 Hz.

Keywords


resonator tipe-H; perambatan akustik; buffer; head loss

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References


El-Busaidy, S., Baumann, B., Wolff, M., & Duggen, L. (2018). Photoacoustics modelling using amplitude mode expansion method in a multiscale t-cell resonator. In Comsol Conference 2018. Lausanne, Switzerland, 14.

Kost, B., Baumann, B., Germer, M., & Wolff, M. (2009). Shape optimization of photoacoustic resonators. WIT Trans. Built Environ, 106(5), 45–54.

Baumann, B., Wolff, M., Kost, B., & Groninga, H. (2007). Finite element calculation of photoacoustic signals. Applied Optics, 46(7), 1120-1125.

Koch, K. P., & Lahmann, W. (1978). Optoacoustic detection of sulphur dioxide below the parts per billion level. Applied Physics Letters, 32(5), 289-291.

Harren, F. J. M., Bijnen, F. G. C., Reuss, J., Voesenek, L. A. C. J., & Blom, C. W. P. M. (1990). Sensitive intracavity photoacoustic measurements with a CO 2 waveguide laser. Applied Physics B, 50(2), 137-144.

Bijnen, F. G. C., Reuss, J., & Harren, F. J. M. (1996). Geometrical optimization of a longitudinal resonant photoacoustic cell for sensitive and fast trace gas detection. Review of Scientific Instruments, 67(8), 2914-2923.

Dumitras, D. C. (Ed.). (2012). CO2 laser: Optimisation and application. BoD–Books on Demand.

Li, J., Chen, W., & Yu, B. (2011). Recent progress on infrared photoacoustic spectroscopy techniques. Applied Spectroscopy Reviews, 46(6), 440-471.

Gupta, A. K., & Tiwari, A. (2015). Enhancement on sound transmission loss for various positioning of inlet and outlet duct of the muffler. International Journal of Engineering and Manufacturing, 5(4), 23-30.

Ranjbar, M., Arslanb, H., & Orak, M. (2018). Effect of geometry modification on sound transmis-sion loss in multi-chamber muffler. In The 8th International Conference on Acoustics & Vibration (ISAV2018), 2018, pp. 1–12.

Karal, F. C. (1953). The analogous acoustical impedance for discontinuities and constrictions of circular cross section. The Journal of the Acoustical Society of America, 25(2), 327-334.

Peat, K. S. (1988). The acoustical impedance at discontinuities of ducts in the presence of a mean flow. Journal of sound and vibration, 127(1), 123-132.

Liu, B., Liu, J., Wei, W., Shen, H., & Wei, Z. (2018). Suppression of low frequency sound transmission in fluid-filled pipe systems through installation of an anechoic node array. AIP Advances, 8(11), 115322.

Chen, F. (2014). Optimization design of muffler based on acoustic transfer matrix and genetic algorithm. Journal of Vibroengineering, 16(5), 2216-2223.

Elnady, T., Elsaadany, S., & Åbom, M. (2011). Flow and pressure drop calculation using two-ports. Journal of vibration and acoustics, 133(4), 1-8.

Munson, B. R., Young, D. F., Okiishi, T. H., & Huebsch, W. W. (2006). Fundamentals of fluid mechanics, John Wiley & Sons. Inc.

Çengel, Y. A., & Cimbala, J. M. (2018). Fluid mechanics a fundamental approach.

Wasono, M. A. J., & Ikhsan, R. (2019). Spektroskopi fotoakustik laser dan aplikasinya. UGM Press.




DOI: https://doi.org/10.21831/jsd.v9i1.38920

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Copyright (c) 2020 R. Yosi Aprian Sari, Agung Bambang Setio Utomo, Mitrayana Mitrayana, Danang Lelono


Printed ISSN (p-ISSN): 2085-9872
Online ISSN (e-ISSN): 2443-1273

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