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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:
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Journal of Flow Visualization and Image Processing

DOI: 10.1615/JFlowVisImageProc.v4.i2.80
pages 179-187

A NEW WAY OF ANALYZING THE SHADOWGRAPH METHOD

Wolfgang Schopf
Centre for Water Research, University of Western Australia, Nedlands WA 6907, Australia

Краткое описание

The shadowgraph method is a very useful visualization technique for fluid flows involving density variations. Usually, a quantitative recovery of the density field from the observed shadowgraph images is not possible; however, artificial shadowgraph images can be constructed if a numerical solution of the problem is available. A comparison of these images with the experimental ones helps to interpret the measurements and also leads to a better understanding of the shadowgraph method itself. By comparing the solution of the full shadowgraph equations with the result of a popular simplified evaluation, the applicability of the latter can be assessed. This procedure is applied to the convective flow in a water-filled square cavity that is heated and cooled from the sidewalls.