{"id":3981,"date":"2020-06-03T12:41:53","date_gmt":"2020-06-03T16:41:53","guid":{"rendered":"https:\/\/engineering.jhu.edu\/lefd\/?page_id=3981"},"modified":"2020-06-03T12:43:06","modified_gmt":"2020-06-03T16:43:06","slug":"2nd-stereo-piv-experiment","status":"publish","type":"page","link":"https:\/\/engineering.jhu.edu\/lefd\/2nd-stereo-piv-experiment\/","title":{"rendered":"2nd Stereo PIV Experiment"},"content":{"rendered":"<h3>Mean flow<\/h3>\n<p><a href=\"https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2020\/06\/7003.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3985\" src=\"https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2020\/06\/7003.png\" alt=\"\" width=\"920\" height=\"403\" srcset=\"https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2020\/06\/7003.png 920w, https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2020\/06\/7003-300x131.png 300w, https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2020\/06\/7003-200x88.png 200w, https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2020\/06\/7003-768x336.png 768w, https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2020\/06\/7003-150x66.png 150w\" sizes=\"auto, (max-width: 920px) 100vw, 920px\" \/><\/a><\/p>\n<p><span lang=\"en-US\">Compare of mean velocity profiles at different spanwise locations from both stereo PIV and low resolution PIV measurement<\/span><\/p>\n<h3>Turbulence Statistics<\/h3>\n<p><a href=\"https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2020\/06\/7004.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3987\" src=\"https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2020\/06\/7004.png\" alt=\"\" width=\"919\" height=\"390\" srcset=\"https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2020\/06\/7004.png 919w, https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2020\/06\/7004-300x127.png 300w, https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2020\/06\/7004-200x85.png 200w, https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2020\/06\/7004-768x326.png 768w, https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2020\/06\/7004-150x64.png 150w\" sizes=\"auto, (max-width: 919px) 100vw, 919px\" \/><\/a><\/p>\n<p><span lang=\"en-US\">Compare of mean velocity profiles at different spanwise locations from both stereo PIV and low resolution PIV measurement <\/span><\/p>\n<p><a href=\"https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2020\/06\/7005.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3988\" src=\"https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2020\/06\/7005.png\" alt=\"\" width=\"957\" height=\"390\" srcset=\"https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2020\/06\/7005.png 957w, https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2020\/06\/7005-300x122.png 300w, https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2020\/06\/7005-200x82.png 200w, https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2020\/06\/7005-768x313.png 768w, https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2020\/06\/7005-150x61.png 150w\" sizes=\"auto, (max-width: 957px) 100vw, 957px\" \/><\/a><\/p>\n<p>High order moments.<\/p>\n<ul>\n<li>Ejection events dominate in most portion of the channel.<\/li>\n<li>Cross-over of the KTE transport occurs within the roughness sublayer.<\/li>\n<li>KTE transport reaches maxima around 0.5h.<\/li>\n<\/ul>\n<h3>Turbulence Structures<\/h3>\n<p><a href=\"https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2020\/06\/7006.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3989\" src=\"https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2020\/06\/7006.png\" alt=\"\" width=\"1146\" height=\"391\" srcset=\"https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2020\/06\/7006.png 1146w, https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2020\/06\/7006-300x102.png 300w, https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2020\/06\/7006-1024x349.png 1024w, https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2020\/06\/7006-200x68.png 200w, https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2020\/06\/7006-768x262.png 768w, https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2020\/06\/7006-150x51.png 150w\" sizes=\"auto, (max-width: 1146px) 100vw, 1146px\" \/><\/a><\/p>\n<p>TKE energy spectra<\/p>\n<ul>\n<li>Signature of roughness exists very near the wall.<\/li>\n<li>Substantial variation of turbulent energy at scale &lt; l, occurs only within 5<i>k.<\/i><\/li>\n<li>Spanwise influences diminish above 2<i>k<\/i> for current scale span.<\/li>\n<\/ul>\n<p><a href=\"https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2020\/06\/7007.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3993\" src=\"https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2020\/06\/7007.png\" alt=\"\" width=\"911\" height=\"401\" srcset=\"https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2020\/06\/7007.png 911w, https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2020\/06\/7007-300x132.png 300w, https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2020\/06\/7007-200x88.png 200w, https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2020\/06\/7007-768x338.png 768w, https:\/\/engineering.jhu.edu\/lefd\/wp-content\/uploads\/2020\/06\/7007-150x66.png 150w\" sizes=\"auto, (max-width: 911px) 100vw, 911px\" \/><\/a><\/p>\n<p>Quadrant contribution to the Reynolds shear stress<\/p>\n<ul>\n<li>Deviations among filtered field indicates the inadequacy of the current resolution.<\/li>\n<li>Q2 events extend beyond 0.5h, Q4 events are compressed within 1<i>k.<\/i><\/li>\n<li>Substantial disparity only occur very near the wall.<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Mean flow Compare of mean velocity profiles at different spanwise locations from both stereo PIV and low resolution PIV measurement Turbulence Statistics Compare of mean velocity profiles at different spanwise locations from both stereo PIV and low resolution PIV measurement &hellip; 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