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Main Author:	Leonardo Vásquez Martínez
Format:	Artículo científico
Language:	en
Published:	Universidad Militar Nueva Granada 2019
Subjects:	Ingeniería análisis modal diferencias finitas Leyes de conservación acústica computacional transformada de Fourier
Online Access:	https://www.redalyc.org/articulo.oa?id=91163366004 https://www.redalyc.org/journal/911/91163366004/ https://www.redalyc.org/journal/911/91163366004/html/ https://www.redalyc.org/journal/911/91163366004/91163366004.epub https://www.redalyc.org/journal/911/91163366004/movil
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Numerical simulation of an acoustic tube Leonardo Vásquez Martínez Jorge Mauricio Ruiz Vera Ingeniería análisis modal diferencias finitas Leyes de conservación acústica computacional transformada de Fourier En este trabajo se presenta un método de diferencias finitas escalonado para analizar y simular la generación y el comportamiento de ondas sonoras en el interior de un tubo. Luego, se describe un tratamiento numérico especial de las condiciones de frontera que modelan fenómenos de reflexión y transmisión a partir del concepto de impedancia acústica. Mediante un muestreo exhaustivo de frecuencias y la transformada rápida de Fourier (FFT), se realiza un análisis modal cuando el aire en el interior del tubo es sometido a perturbaciones armónicas y aleatorias. Por último, se analiza el comportamiento del factor de calidad del sistema acústico y se confirma su carácter exponencial, así como su dependencia de la impedancia acústica. Los resultados muestran la utilidad del método en la simulación de fenómenos acústicos como reflexión, transmisión, disipación de ondas sonoras y resonancia en dominios acotados. El método propuesto permite analizar casos generales como la dispersión de ondas sonoras no armónicas. 2019 artículo científico 0124-8170 https://www.redalyc.org/articulo.oa?id=91163366004 https://www.redalyc.org/journal/911/91163366004/ https://www.redalyc.org/journal/911/91163366004/html/ https://www.redalyc.org/journal/911/91163366004/91163366004.epub https://www.redalyc.org/journal/911/91163366004/movil 10.18359/rcin.3701 en http://www.redalyc.org/revista.oa?id=911 Ciencia e Ingeniería Neogranadina application/pdf Universidad Militar Nueva Granada Ciencia e Ingeniería Neogranadina (Colombia) Num.2 Vol.29

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