skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Finite-Difference Simulation of Atmospheric Acoustic Sound Through a Complex Meteorological Background Over a Topographically Complex Surface.

Abstract

Abstract not provided.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1238478
Report Number(s):
SAND2006-3347C
526458
DOE Contract Number:
AC04-94AL85000
Resource Type:
Conference
Resource Relation:
Conference: Proposed for presentation at the Euronoise 2006 held May 30 - June 1, 2006 in Tampere, Finland.
Country of Publication:
United States
Language:
English

Citation Formats

Symons, Neill P., Aldridge, David F., D. Keith Wilson, David H. Marlin, Sandra L. Collier, and Vladimir E. Ostashev. Finite-Difference Simulation of Atmospheric Acoustic Sound Through a Complex Meteorological Background Over a Topographically Complex Surface.. United States: N. p., 2006. Web.
Symons, Neill P., Aldridge, David F., D. Keith Wilson, David H. Marlin, Sandra L. Collier, & Vladimir E. Ostashev. Finite-Difference Simulation of Atmospheric Acoustic Sound Through a Complex Meteorological Background Over a Topographically Complex Surface.. United States.
Symons, Neill P., Aldridge, David F., D. Keith Wilson, David H. Marlin, Sandra L. Collier, and Vladimir E. Ostashev. Mon . "Finite-Difference Simulation of Atmospheric Acoustic Sound Through a Complex Meteorological Background Over a Topographically Complex Surface.". United States. doi:. https://www.osti.gov/servlets/purl/1238478.
@article{osti_1238478,
title = {Finite-Difference Simulation of Atmospheric Acoustic Sound Through a Complex Meteorological Background Over a Topographically Complex Surface.},
author = {Symons, Neill P. and Aldridge, David F. and D. Keith Wilson and David H. Marlin and Sandra L. Collier and Vladimir E. Ostashev},
abstractNote = {Abstract not provided.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon May 01 00:00:00 EDT 2006},
month = {Mon May 01 00:00:00 EDT 2006}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share:
  • The QUICKSILVER suite of codes has been developed at Sandia National Laboratories for performing simulations in three dimensions using time-domain, finite-difference, electromagnetic techniques. Simulations can be performed with or without charged particles; when charged particles are included, particle-in-cell (PIC) techniques are used. In addition to the QUICKSILVER simulation tool, the suite includes a preprocessor and several postprocessors to provide the user with an efficient and easy-to-use method for problem specification and setup as well as subsequent analysis of simulation data. The entire suite may be licensed for commercial or government use. QUICKSILVER was designed as a tool for simulating themore » physics of high-current pulsed power and microwave devices, such as electron and ion diodes, magnetically insulated transmission lines, magnetron tubes, etc. Although all these devices require charged particles, there are many other pulsed power applications, such as pulse-forming lines and switches, that do not involve particle simulation. Consequently, the code has been design to perform efficiently on fields-only simulations. 4 refs.« less
  • The QUICKSILVER suite of codes has been developed at Sandia National Laboratories for performing simulations in three dimensions using time-domain, finite-difference, electromagnetic techniques. Simulations can be performed with or without charged particles; when charged particles are included, particle-in-cell (PIC) techniques are used. In addition to the QUICKSILVER simulation tool, the suite includes a preprocessor and several postprocessors to provide the user with an efficient and easy-to-use method for problem specification and setup as well as subsequent analysis of simulation data. The entire suite may be licensed for commercial or government use. QUICKSILVER was designed as a tool for simulating themore » physics of high-current pulsed power and microwave devices, such as electron and ion diodes, magnetically insulated transmission lines, magnetron tubes, etc. Although all these devices require charged particles, there are many other pulsed power applications, such as pulse-forming lines and switches, that do not involve particle simulation. Consequently, the code has been design to perform efficiently on fields-only simulations. 4 refs.« less
  • Boundary layer flows are greatly complicated by the presence of complex terrain which redirects mean flow and alters the structure of turbulence. Surface fluxes of heat and moisture provide additional forcing which induce secondary flows, or can dominate flow dynamics in cases with weak mean flows. Mesoscale models are increasingly being used for numerical simulations of boundary layer flows over complex terrain. These models typically use a terrain-following coordinate transformation, but these introduce numerical errors over steep terrain. An alternative is to use an immersed boundary method which alleviates errors associated with the coordinate transformation by allowing the terrain tomore » be represented as a surface which arbitrarily passes through a Cartesian grid. This paper describes coupling atmospheric physics models to an immersed boundary method implemented in the Weather Research and Forecasting (WRF) model in previous work [Lundquist et al., 2007]. When the immersed boundary method is used, boundary conditions must be imposed on the immersed surface for velocity and scalar surface fluxes. Previous algorithms, such as those used by Tseng and Ferziger [2003] and Balaras [2004], impose no-slip boundary conditions on the velocity field at the immersed surface by adding a body force to the Navier-Stokes equations. Flux boundary conditions for the advection-diffusion equation have not been adequately addressed. A new algorithm is developed here which allows scalar surface fluxes to be imposed on the flow solution at an immersed boundary. With this extension of the immersed boundary method, land-surface models can be coupled to the immersed boundary to provide realistic surface forcing. Validation is provided in the context of idealized valley simulations with both specified and parameterized surface fluxes using the WRF code. Applicability to real terrain is illustrated with a fully coupled two-dimensional simulation of the Owens Valley in California.« less
  • This document is intended to serve as a users guide for the time-domain atmospheric acoustic propagation suite (TDAAPS) program developed as part of the Department of Defense High-Performance Modernization Office (HPCMP) Common High-Performance Computing Scalable Software Initiative (CHSSI). TDAAPS performs staggered-grid finite-difference modeling of the acoustic velocity-pressure system with the incorporation of spatially inhomogeneous winds. Wherever practical the control structure of the codes are written in C++ using an object oriented design. Sections of code where a large number of calculations are required are written in C or F77 in order to enable better compiler optimization of these sections. Themore » TDAAPS program conforms to a UNIX style calling interface. Most of the actions of the codes are controlled by adding flags to the invoking command line. This document presents a large number of examples and provides new users with the necessary background to perform acoustic modeling with TDAAPS.« less
  • No abstract prepared.