Modeling atmospheric acoustics with meteorological complexity and surface heterogeneity
Abstract
The ultimate aim of this research is to develop a robust and reliable tool for predicting sound pressure level at shore due to noise sources at sea. The improved understanding of the detectability of Naval vessels will preserve and increase the safety of personnel and equipment during stealth maritime operations. Specifically, the PIs have been involved in modeling and measurements of acoustic propagation over distances ranging from hundreds of meters to several kilometers. To date, the effort has focused on the development of a robust mathematical model of acoustic transmission loss given current atmospheric and weather conditions. The primary goal of this project is to incorporate additional meteorological complexity in the numerical solver developed at Catholic University of America. The proposed research will allow modeling acoustic propagation in more realistic scenarios. Presently, no available model accounts for variability of the effective speed of sound and ground impedance along an acoustic path. This work will develop this model capability. Another part of the effort aims to model sound absorption of coastal shrubs and small trees as well as floating aquatic plants. Additionally, theproposed study will investigate the effect of crosswind and meteorological complexity above the water-shore boundary and evaluate what meteorological information impacts predictions of sound pressure level the most. The PIs are committed to involve students in meaningful research endeavors to better prepare them for success in graduate study or professional practice in many DoD-related paths. This work will also serve to support development of graduate courses in numerical methods in acoustics.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jan 06, 2021
- Source ID
- N000142112059
Entities
People
- Diego Turo
Organizations
- Office of Naval Research
- The Catholic University of America
- United States Navy