Entrainment studies in cloud-like flows using novel scanning tomography technique

Entrainment studies in cloud-like flows using novel scanning tomography technique

Singh, K.N.
Sreenivas, K.R.

2015-08-25

Clouds are one of the major sources of uncertainty in climate prediction.The present work is to study the dynamics of orographic clouds. We considered a planar turbulent wall jet with off source volumetric heating as an appropriate low order fluid-dynamical model for studying the turbulence and entrainment in orographic-clouds. Entrainment was found to reduce drastically with the off-source volumetric heat addition. We found that the reduction of entrainment started at a bulk-Richardson number which was an order of magnitude smaller than that seen in earlier experiments [1] on free standing cumulus clouds. This is consistent with observations in real orographic clouds which develop as a thin sheet rising along the mountain slope. We have developed a novel scanning tomography technique for getting concentration field in turbulent shear flows. This technique is being applied on cloud-like flow to understand the entrainment characteristics. Detailed results will be presented at the conference.

http://resolver.tudelft.nl/uuid:c87c141f-771f-4934-bb19-c90826459065

Conference proceedings

conference paper

(c) 2015 The Authors