2020-08-07T03:21:18Z
http://oa.upm.es/cgi/oai2
oai:oa.upm.es:35990
2016-02-24T15:53:15Z
7374617475733D707562
7375626A656374733D666973696361
747970653D61727469636C65
Influence of gravity on heavy particle statistics in turbulent channel and pipe flow at matched Kàrmàn number
Torres, Maria J.
García García, Javier
Physics
In this work, we use large eddy simulations (LES) and Lagrangian tracking to study the influence of gravity on particle statistics in a fully developed turbulent upward/downward flow in a vertical channel and pipe at matched Kàrmàn number. Only drag and gravity are considered in the equation of motion for solid particles, which are assumed to have no influence on the flow field. Particle interactions with the wall are fully elastic. Our findings obtained from the particle statistics confirm that: (i) the gravity seems to modify both the quantitative and qualitative behavior of the particle distribution and statistics of the particle velocity in wall normal direction; (ii) however, only the quantitative behavior of velocity particle in streamwise direction and the root mean square of velocity components is modified; (iii) the statistics of fluid and particles coincide very well near the wall in channel and pipe flow with equal Kàrmàn number; (iv) pipe curvature seems to have quantitative and qualitative influence on the particle velocity and on the particle concentration in wall normal direction.
E.T.S.I. Industriales (UPM)
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
2014-08
info:eu-repo/semantics/article
Article
Revista Tecnica de la Facultad de Ingenieria Universidad del Zulia, ISSN 0254-0770, 2014-08, Vol. 37, No. 2
PeerReviewed
application/pdf
eng
http://produccioncientificaluz.org/index.php/tecnica/index
info:eu-repo/semantics/restrictedAccess
http://oa.upm.es/35990/