Доступ предоставлен для: Guest
Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции
Journal of Flow Visualization and Image Processing
SJR: 0.161 SNIP: 0.312 CiteScore™: 0.1

ISSN Печать: 1065-3090
ISSN Онлайн: 1940-4336

Выпуски:
Том 27, 2020 Том 26, 2019 Том 25, 2018 Том 24, 2017 Том 23, 2016 Том 22, 2015 Том 21, 2014 Том 20, 2013 Том 19, 2012 Том 18, 2011 Том 17, 2010 Том 16, 2009 Том 15, 2008 Том 14, 2007 Том 13, 2006 Том 12, 2005 Том 11, 2004 Том 10, 2003 Том 9, 2002 Том 8, 2001 Том 7, 2000 Том 6, 1999 Том 5, 1998 Том 4, 1997 Том 3, 1996 Том 2, 1995 Том 1, 1993

Journal of Flow Visualization and Image Processing

DOI: 10.1615/JFlowVisImageProc.2017019015
pages 215-232

DOPPLER GLOBAL VELOCIMETRY. RANGES OF ACCESSIBLE VELOCITIES. PART I: THEORY

F. Guermeur
FEMTO-ST Institute, Univ. Bourgogne Franche-Comté, CNRS, Belfort, France
Yannick Bailly
FEMTO-ST Institute, Univ. Bourgogne Franche-Comté, CNRS, Belfort, France
B. Martinez
ISL, 5 rue du général Cassagnou, Saint-Louis, France

Краткое описание

The Doppler Global Velocimetry (DGV) is a method of velocity measurement in fluid flows based on the Doppler effect and on the conversion of frequency shifts into transmission rates by the use of an absorption line filter. This frequency-to-intensity discriminator is a cell of glass filled with iodine vapor, which is located in front of the receptor. The velocity ranges accessible with such an apparatus are then conditioned by the geometrical setup given by the positions of the camera(s) and laser(s) and by the physiognomy of the absorption peak that is considered. In this paper, the authors propose a procedure to find ranges of accessible velocities in the case of a three-velocity components system: three directions of observations and one direction of illumination are fixed. The influence of these parameters on the accessible velocities is studied considering either one point of the studied zone or the whole area of interest.