1.

Record Nr.

UNINA9910707624603321

Autore

Leong M. Y.

Titolo

Mixing of pure air jets with a reacting fuel-rich crossflow / / M.Y. Leong and G.S. Samuelsen, J.D. Holdeman

Pubbl/distr/stampa

Cleveland, Ohio : , : National Aeronautics and Space Administration, Lewis Research Center, , April 1997

Descrizione fisica

1 online resource (24 pages) : illustrations

Collana

NASA technical memorandum ; ; 107430

Soggetti

Air jets

Cross flow

High temperature

Gas turbines

Combustion

Stoichiometry

Lingua di pubblicazione

Inglese

Formato

Materiale a stampa

Livello bibliografico

Monografia

Note generali

"April 1997"--Report documentation page.

"Prepared for the Spring 1997 Meeting of the Westem States Section sponsored by the Combustion Institute Sandia National Laboratory, Livermore, California, April 14-16, 1997."

"Performing organization: National Aeronautics and Space Administration, Lewis Research Center"--Report documentation page.

"WCC/CI Paper No. 97S-034."

Nota di bibliografia

Includes bibliographical references (page 13).



2.

Record Nr.

UNINA9910373935003321

Autore

Collins Michael D

Titolo

Parabolic Wave Equations with Applications / / by Michael D. Collins, William L. Siegmann

Pubbl/distr/stampa

New York, NY : , : Springer New York : , : Imprint : Springer, , 2019

ISBN

1-4939-9934-6

Edizione

[1st ed. 2019.]

Descrizione fisica

1 online resource (IX, 135 p. 74 illus., 37 illus. in color.)

Disciplina

534

Soggetti

Acoustics

Numerical analysis

Oceanography

Differential equations, Partial

Geophysics

Numerical Analysis

Partial Differential Equations

Geophysics/Geodesy

Lingua di pubblicazione

Inglese

Formato

Materiale a stampa

Livello bibliografico

Monografia

Sommario/riassunto

This book introduces parabolic wave equations, their key methods of numerical solution, and applications in seismology and ocean acoustics. The parabolic equation method provides an appealing combination of accuracy and efficiency for many nonseparable wave propagation problems in geophysics. While the parabolic equation method was pioneered in the 1940s by Leontovich and Fock who applied it to radio wave propagation in the atmosphere, it thrived in the 1970s due to its usefulness in seismology and ocean acoustics. The book covers progress made following the parabolic equation’s ascendancy in geophysics. It begins with the necessary preliminaries on the elliptic wave equation and its analysis from which the parabolic wave equation is derived and introduced. Subsequently, the authors demonstrate the use of rational approximation techniques, the Padé solution in particular, to find numerical solutions to the energy-



conserving parabolic equation, three-dimensional parabolic equations, and horizontal wave equations. The rest of the book demonstrates applications to seismology, ocean acoustics, and beyond, with coverage of elastic waves, sloping interfaces and boundaries, acousto-gravity waves, and waves in poro-elastic media. Overall, it will be of use to students and researchers in wave propagation, ocean acoustics, geophysical sciences and more.