Acoustic Ray-Tracing on Unstructured Adaptive Grids
نویسندگان
چکیده
A computationally efficient acoustic ray-tracing code based on unstructured adaptive grids is described in detail. The use of unstructured grids allows wave propagation simulations on complex computational domains. Detailed surface layer physics is included to take into account the atmospheric variability under different stability conditions and landuse inhomogeneities. The ray-tracing model has been coupled with mesoand microscale atmospheric flow models. The method shows promise in simulating long-range acoustic wave propagation in the atmosphere over complex terrain.
منابع مشابه
Adaptive Unstructured Grid Generation Scheme for Solution of the Heat Equation
An adaptive unstructured grid generation scheme is introduced to use finite volume (FV) and finite element (FE) formulation to solve the heat equation with singular boundary conditions. Regular grids could not acheive accurate solution to this problem. The grid generation scheme uses an optimal time complexity frontal method for the automatic generation and delaunay triangulation of the grid po...
متن کاملTechnical Report Fast Ray Traversal of Unstructured Volume Data using Plucker Tests
The importance of high-performance rendering of unstructured data sets has increased significantly mainly due to its use in scientific simulations such as computational fluid dynamics and finite element computations. However, the unstructured nature of these data sets complicate their handling and lead to low performance even with hardware support through GPUs. In this paper, we present a new t...
متن کاملLocal Exact Particle Tracing on Unstructured Grids
For analyzing and interpreting results of flow simulations, particle tracing is a well established visualization method. In addition, it is a preliminary step for more advanced techniques like line integral convolution. For interactive exploration of large data sets, a very efficient and reliable particle tracing method is needed. For wind channel experiments or flight simulations, large unstru...
متن کاملEffect of Thermocline Formation on Underwater Acoustic Waves Propagation in Persian Gulf
Thermocline layer have remarkable effects on acoustic propagation in Persian Gulf environment. So far, no comprehensive research has been conducted to explore thermocline layer, especially its characteristics including top, thickness, and thermal gradient of thermocline in Persian Gulf. Besides, effects of thermocline on underwater acoustic propagation including transmission loss and sound chan...
متن کاملAn Efficient Point Location Method for Visualization in Large Unstructured Grids
Visualization of data defined over large unstructured grids requires an efficient solution to the point location problem, since many visualization methods need values at arbitrary positions given in global coordinates. This paper presents a memory efficient, fast in-core solution to the problem using cell adjacency and a complete adaptive kd-tree based on the vertices. Since cell adjacency info...
متن کامل