{"id":402,"date":"2016-06-21T16:20:35","date_gmt":"2016-06-21T20:20:35","guid":{"rendered":"https:\/\/engineering.jhu.edu\/lefd\/?page_id=402"},"modified":"2020-06-03T10:51:42","modified_gmt":"2020-06-03T14:51:42","slug":"particle-couette-facility","status":"publish","type":"page","link":"https:\/\/engineering.jhu.edu\/lefd\/canopy-flows\/bio-complexity\/particle-couette-facility\/","title":{"rendered":"Particle Couette Facility"},"content":{"rendered":"<h3>People<\/h3>\n<table style=\"height: auto;\" width=\"700\" align=\"center\">\n<tbody>\n<tr>\n<td width=\"285\">Post Doctoral Fellow<\/td>\n<td width=\"285\">Ren\u00e9 van Hout<\/td>\n<\/tr>\n<tr>\n<td width=\"285\">Project Supervisors<\/td>\n<td width=\"285\">Prof. Joseph Katz<\/td>\n<\/tr>\n<tr>\n<td width=\"285\">Visiting Professor<\/td>\n<td width=\"285\">Prof. Tim Garrison<br \/>\nYork College, PA<\/td>\n<\/tr>\n<tr>\n<td width=\"285\">Design and Technical Support<\/td>\n<td width=\"285\">Yury Ronzhes<br \/>\nStephen King<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Outline<\/h3>\n<p style=\"text-align: justify;\" align=\"left\">The Particle Couette Facility has been designed for the measurement of the drag and lift coefficient on a single pollen grain. The facility consists of two concentric perspex cylinders that can both be rotated at a maximum speed of 3600 rpm. Pollen is being injected into the annulus through a specially designed injection chamber that is remotely controlled. In order to measure the drag and lift force on a single pollen particle, quadruple exposure PIV technique is used to both resolve the velocity and acceleration field. This information is used to solve the force balance on a single pollen grain.<\/p>\n<p style=\"text-align: justify;\" align=\"left\">The drag and lift coefficients are required to model suspension away from the anther and subsequent transport into the atmosphere at the larger scales.<\/p>\n<h3 align=\"left\">Facility<\/h3>\n<p style=\"text-align: justify;\">A schematic layout of the Particle Couette facility is shown below. The facility consists of two perspex cylinders, inner cylinder D = 5&#8243; and outer cylinder D = 9&#8243; that can rotate independently at a maximum rate of 3600 rpm.<\/p>\n<h3 style=\"text-align: left;\"><a href=\"https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2016\/06\/ExpFacility.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-426 aligncenter\" src=\"https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2016\/06\/ExpFacility.jpg\" alt=\"ExpFacility\" width=\"600\" height=\"449\" srcset=\"https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2016\/06\/ExpFacility.jpg 600w, https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2016\/06\/ExpFacility-300x225.jpg 300w, https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2016\/06\/ExpFacility-150x112.jpg 150w, https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2016\/06\/ExpFacility-320x240.jpg 320w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/a>Particle Couette Facility: Two camera setup, outer and inner cylinder<a href=\"https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2016\/06\/TwoCam1.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-409 aligncenter\" src=\"https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2016\/06\/TwoCam1.jpg\" alt=\"TwoCam1\" width=\"600\" height=\"450\" srcset=\"https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2016\/06\/TwoCam1.jpg 600w, https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2016\/06\/TwoCam1-300x225.jpg 300w, https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2016\/06\/TwoCam1-150x113.jpg 150w, https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2016\/06\/TwoCam1-320x240.jpg 320w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/a>Two camera setup<a href=\"https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2016\/06\/TwoCam2.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-410 aligncenter\" src=\"https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2016\/06\/TwoCam2.jpg\" alt=\"TwoCam2\" width=\"600\" height=\"450\" srcset=\"https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2016\/06\/TwoCam2.jpg 600w, https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2016\/06\/TwoCam2-300x225.jpg 300w, https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2016\/06\/TwoCam2-150x113.jpg 150w, https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2016\/06\/TwoCam2-320x240.jpg 320w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/a>Laser beams combining optics<a href=\"https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2016\/06\/Lasers.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-411 aligncenter\" src=\"https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2016\/06\/Lasers.jpg\" alt=\"Lasers\" width=\"600\" height=\"450\" srcset=\"https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2016\/06\/Lasers.jpg 600w, https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2016\/06\/Lasers-300x225.jpg 300w, https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2016\/06\/Lasers-150x113.jpg 150w, https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2016\/06\/Lasers-320x240.jpg 320w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/a>Fig. 2 Pollen Injection Mechanism<a href=\"https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2016\/06\/InjectMech2.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-large wp-image-412 aligncenter\" src=\"https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2016\/06\/InjectMech2-1024x768.jpg\" alt=\"InjectMech2\" width=\"1024\" height=\"768\" srcset=\"https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2016\/06\/InjectMech2.jpg 1024w, https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2016\/06\/InjectMech2-300x225.jpg 300w, https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2016\/06\/InjectMech2-768x576.jpg 768w, https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2016\/06\/InjectMech2-150x113.jpg 150w, https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2016\/06\/InjectMech2-320x240.jpg 320w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a>Results<\/h3>\n<p style=\"text-align: justify;\" align=\"left\">Preliminary measurements have been carried out using one camera to characterize the flow field.<\/p>\n<p style=\"text-align: center;\" align=\"left\"><a href=\"https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2016\/06\/Results1.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-432 aligncenter\" src=\"https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2016\/06\/Results1.jpg\" alt=\"Results1\" width=\"600\" height=\"411\" srcset=\"https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2016\/06\/Results1.jpg 600w, https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2016\/06\/Results1-300x206.jpg 300w, https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2016\/06\/Results1-150x103.jpg 150w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/a>Relative motion between the pollen grain and the air velocity inside the annulus<\/p>\n<p align=\"left\"><a href=\"https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2020\/04\/Vector-Map-Flow.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-1813 aligncenter\" src=\"https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2020\/04\/Vector-Map-Flow.jpg\" alt=\"\" width=\"600\" height=\"401\" srcset=\"https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2020\/04\/Vector-Map-Flow.jpg 600w, https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2020\/04\/Vector-Map-Flow-300x201.jpg 300w, https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2020\/04\/Vector-Map-Flow-200x134.jpg 200w, https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2020\/04\/Vector-Map-Flow-150x100.jpg 150w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/a><a href=\"https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2020\/04\/Influence-of-pollen-grain.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-1810 aligncenter\" src=\"https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2020\/04\/Influence-of-pollen-grain.jpg\" alt=\"\" width=\"614\" height=\"405\" srcset=\"https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2020\/04\/Influence-of-pollen-grain.jpg 600w, https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2020\/04\/Influence-of-pollen-grain-300x198.jpg 300w, https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2020\/04\/Influence-of-pollen-grain-200x132.jpg 200w, https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2020\/04\/Influence-of-pollen-grain-150x99.jpg 150w\" sizes=\"auto, (max-width: 614px) 100vw, 614px\" \/><\/a><a href=\"https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2016\/06\/Results5.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-439 aligncenter\" src=\"https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2016\/06\/Results5.jpg\" alt=\"Results5\" width=\"600\" height=\"389\" srcset=\"https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2016\/06\/Results5.jpg 600w, https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2016\/06\/Results5-300x195.jpg 300w, https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2016\/06\/Results5-150x97.jpg 150w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/a><a href=\"https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2016\/06\/Results4.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-441 aligncenter\" src=\"https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2016\/06\/Results4.jpg\" alt=\"Results4\" width=\"200\" height=\"77\" srcset=\"https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2016\/06\/Results4.jpg 200w, https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2016\/06\/Results4-150x58.jpg 150w\" sizes=\"auto, (max-width: 200px) 100vw, 200px\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>People Post Doctoral Fellow Ren\u00e9 van Hout Project Supervisors Prof. Joseph Katz Visiting Professor Prof. Tim Garrison York College, PA Design and Technical Support Yury Ronzhes Stephen King Outline The Particle Couette Facility has been designed for the measurement of &hellip; <a href=\"https:\/\/engineering.jhu.edu\/lefd\/canopy-flows\/bio-complexity\/particle-couette-facility\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":190,"featured_media":0,"parent":225,"menu_order":2,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"footnotes":""},"class_list":["post-402","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Particle Couette Facility - Laboratory for Experimental Fluid Dynamics<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/engineering.jhu.edu\/lefd\/canopy-flows\/bio-complexity\/particle-couette-facility\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" 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