English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Undulations from amplified low frequency surface waves

Coutant, A., & Parentani, R. (2014). Undulations from amplified low frequency surface waves. Physics of fluids, 26(4): 044106. doi:10.1063/1.4872025.

Item is

Files

show Files
hide Files
:
1211.2001.pdf (Preprint), 785KB
Name:
1211.2001.pdf
Description:
File downloaded from arXiv at 2014-06-11 11:17
OA-Status:
Visibility:
Public
MIME-Type / Checksum:
application/pdf / [MD5]
Technical Metadata:
Copyright Date:
-
Copyright Info:
-
:
PhysFlui101.4872025.pdf (Any fulltext), 427KB
Name:
PhysFlui101.4872025.pdf
Description:
-
OA-Status:
Visibility:
Public
MIME-Type / Checksum:
application/pdf / [MD5]
Technical Metadata:
Copyright Date:
-
Copyright Info:
-
License:
-

Locators

show

Creators

show
hide
 Creators:
Coutant, Antonin1, Author
Parentani, Renaud, Author
Affiliations:
1AEI-Golm, MPI for Gravitational Physics, Max Planck Society, Golm, DE, ou_24008              

Content

show
hide
Free keywords: Physics, Fluid Dynamics, physics.flu-dyn,General Relativity and Quantum Cosmology, gr-qc,High Energy Physics - Theory, hep-th
 Abstract: We study the scattering of gravity waves in longitudinal inhomogeneous stationary flows. When the flow becomes supercritical, counterflow propagating shallow waves are blocked and converted into deep waves. We show that the reflected waves are amplified in such a way that, in the zero-frequency limit, the free surface develops an undulation, i.e., a zero-frequency wave of large amplitude with nodes located at specific places. This amplification involves negative energy waves, and implies that the unperturbed flat surface is unstable against incoming perturbations of arbitrary small amplitude. The relation between this instability and black hole radiation (the Hawking effect) is discussed.

Details

show
hide
Language(s):
 Dates: 2012-11-082014-04-292014
 Publication Status: Issued
 Pages: 19 pages, 2 figures - Pulished version. Added clarifications, and relations to fluid mechanics standard treatments
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Physics of fluids
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Woodbury, N.Y. [etc.] : American Institute of Physics
Pages: - Volume / Issue: 26 (4) Sequence Number: 044106 Start / End Page: - Identifier: ISSN: 0031-9171
CoNE: https://pure.mpg.de/cone/journals/resource/954928595037_1