EPJ Web of Conferences
Volume 25, 2012EFM11 – Experimental Fluid Mechanics 2011
|Number of page(s)||11|
|Section||Experimental Fluid Mechanics 2011|
|Published online||16 April 2012|
Detailed analysis of POD method applied on turbulent ﬂow
Institute of Thermomechanics, Department of Meteorology and Environment Protection, Charles University,
firstname.lastname@example.org ; email@example.com
2 Institute of Thermomechanics
firstname.lastname@example.org ; email@example.com ; firstname.lastname@example.org
Proper orthogonal decomposition (POD) of a very turbulent ﬂow inside a street canyon is performed. The energy contribution of each mode is obtained. Also, physical meaning of the POD result is clariﬁed. Particular modes of POD are assigned to the particular ﬂow events like a sweep event, a vortex behind a roof or a vortex at the bottom of a street. Test of POD sensitivity to the acquisition time of data records is done. Test with decreasing sample frequency is also executed. Further, interpolation of POD expansion coefﬁcient is performed in order to test possible increase in sample frequency and get new information about the ﬂow from the POD analysis. We tested a linear and a spline type of the interpolation and the linear one carried out a slightly better result.
© Owned by the authors, published by EDP Sciences, 2012
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.