{"id":194737,"date":"2021-10-20T15:53:04","date_gmt":"2021-10-20T15:53:04","guid":{"rendered":"\/forum\/forums\/reply\/194737\/"},"modified":"2021-10-20T15:54:07","modified_gmt":"2021-10-20T15:54:07","slug":"194737","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/194737\/","title":{"rendered":"Reply To: What is the reason of negative film flow rate in annular flow?"},"content":{"rendered":"<p>\nOkay, I am following your recommendation for first cell height.  From the contour graph, I see that there is no film just after the inlet section. This might be the reason for abnormal\/negative velocity just after the inlet. But one thing I notice is that film thickness and film velocity at the bottom and up of the pipe are different. As I am injecting liquid mass flux around the circumference uniformly using the EWF model, film thickness and velocity should be the same around the pipe. Is there any specific reason for happening these?<br \/>\nAs the film thickness is disappearing at the inlet, should I simulate for a longer period? From the experimental result, I only know the liquid mass flow rate at the inlet.<br \/>\nFlim thickness contour-<br \/>\n<img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/forum-uploads\/719\/AESEVVSIS8D8.png\" width=\"\" height=\"\" \/>Film Velocity:<br \/>\n<img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/forum-uploads\/683\/25IGRV6TFLB9.png\" width=\"\" height=\"\" \/>Regards<br \/>\nAnadi<\/p>\n","protected":false},"template":"","class_list":["post-194737","reply","type-reply","status-publish","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Okay, I am following your recommendation for first cell height. From the contour graph, I see that there is no film just after the inlet section. This might be the reason for abnormal\/negative velocity just after the inlet. But one thing I notice is that film thickness and film velocity at the bottom and up\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/194737\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 4.9.10\" \/>\n\t\t<meta property=\"og:locale\" content=\"en_US\" \/>\n\t\t<meta property=\"og:site_name\" content=\"Ansys Learning Forum | Ansys Innovation Space\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"Reply To: What is the reason of negative film flow rate in annular flow? | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"Okay, I am following your recommendation for first cell height. From the contour graph, I see that there is no film just after the inlet section. This might be the reason for abnormal\/negative velocity just after the inlet. But one thing I notice is that film thickness and film velocity at the bottom and up\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/194737\/\" \/>\n\t\t<meta property=\"og:image\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forum\/wp-content\/uploads\/forum-uploads\/719\/AESEVVSIS8D8.png\" \/>\n\t\t<meta property=\"og:image:secure_url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forum\/wp-content\/uploads\/forum-uploads\/719\/AESEVVSIS8D8.png\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2021-10-20T15:53:04+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2021-10-20T15:54:07+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Reply To: What is the reason of negative film flow rate in annular flow? | Ansys Learning Forum\" \/>\n\t\t<meta name=\"twitter:description\" content=\"Okay, I am following your recommendation for first cell height. From the contour graph, I see that there is no film just after the inlet section. This might be the reason for abnormal\/negative velocity just after the inlet. But one thing I notice is that film thickness and film velocity at the bottom and up\" \/>\n\t\t<meta name=\"twitter:image\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forum\/wp-content\/uploads\/forum-uploads\/719\/AESEVVSIS8D8.png\" \/>\n\t\t<script type=\"application\/ld+json\" class=\"aioseo-schema\">\n\t\t\t{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/194737\\\/#breadcrumblist\",\"itemListElement\":[{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/194737\\\/#listItem\",\"name\":\"Reply To: What is the reason of negative film flow rate in annular flow?\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/194737\\\/#listItem\",\"position\":2,\"name\":\"Reply To: What is the reason of negative film flow rate in annular flow?\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"name\":\"Home\"}}]},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#organization\",\"name\":\"Ansys Learning Forum\",\"description\":\"Ansys Innovation Space\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/194737\\\/#webpage\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/194737\\\/\",\"name\":\"Reply To: What is the reason of negative film flow rate in annular flow? | Ansys Learning Forum\",\"description\":\"Okay, I am following your recommendation for first cell height. From the contour graph, I see that there is no film just after the inlet section. This might be the reason for abnormal\\\/negative velocity just after the inlet. 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From the contour graph, I see that there is no film just after the inlet section. This might be the reason for abnormal\/negative velocity just after the inlet. But one thing I notice is that film thickness and film velocity at the bottom and up","og:url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/194737\/","og:image":"https:\/\/innovationspace.ansys.com\/forum\/forum\/wp-content\/uploads\/forum-uploads\/719\/AESEVVSIS8D8.png","og:image:secure_url":"https:\/\/innovationspace.ansys.com\/forum\/forum\/wp-content\/uploads\/forum-uploads\/719\/AESEVVSIS8D8.png","article:published_time":"2021-10-20T15:53:04+00:00","article:modified_time":"2021-10-20T15:54:07+00:00","twitter:card":"summary_large_image","twitter:title":"Reply To: What is the reason of negative film flow rate in annular flow? | Ansys Learning Forum","twitter:description":"Okay, I am following your recommendation for first cell height. 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