Lattice Boltzmann approach to acoustic propagation for underwater warfare simulation

Authors:
Sol Ha;Namkug Ku;Kyu-Yeul Lee
Affiliations:
Seoul National University, Seoul, South Korea;Seoul National University, Seoul, South Korea;Seoul National University, Seoul, South Korea
Venue:
Proceedings of the 2012 Symposium on Theory of Modeling and Simulation - DEVS Integrative M&S Symposium
Year:
2012

Citing 3
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Abstract

To simulate various underwater warfare situations, a virtual undersea environment with reasonable acoustic communication among the platforms is needed. This paper describes a lattice Boltzmann approach to simulate undersea acoustic propagation for underwater warfare. The lattice Boltzmann methods were developed from the lattice gas cellular automata of Frisch, Hasslacher, et al. This method has also been used to demonstrate various engineering phenomena, and one of its most promising application fields is the flow simulation of viscous fluid, the reaction-diffusion system, acoustics, etc. In this study, the lattice Boltzmann method was used to solve the acoustic propagation problem within the framework of the undersea environment. The undersea space is represented by the lattices, and each node in this lattice can be evolved with a certain acoustic evolution equation by itself. A self-noise from each platform is considered an acoustic point source. The proposed space model is based on the discrete event system specification (DEVS) formalism. To confirm the functions of the proposed model, simple anti-surface ship warfare was simulated.