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INVESTIGATION OF LPG SOOTING DIFFUSION FLAME BY RAINBOW SCHLIEREN DEFLECTOMETRY 用彩虹纹影偏转法研究LPG烟尘扩散火焰
IF 0.6
JOURNAL OF FLOW VISUALIZATION AND IMAGE PROCESSING Pub Date : 2020-04-01 DOI: 10.1615/jflowvisimageproc.2020030930
G. M. Nayak, D. Sellan, Raju Murugan, S. Balusamy, Sayak Banerjee, P. Kolhe
{"title":"INVESTIGATION OF LPG SOOTING DIFFUSION FLAME BY RAINBOW SCHLIEREN DEFLECTOMETRY","authors":"G. M. Nayak, D. Sellan, Raju Murugan, S. Balusamy, Sayak Banerjee, P. Kolhe","doi":"10.1615/jflowvisimageproc.2020030930","DOIUrl":"https://doi.org/10.1615/jflowvisimageproc.2020030930","url":null,"abstract":"Rainbow schlieren deflectometry was employed to characterize the flame structure of Laminar unsteady LPG jet diffusion flame. The schlieren images were acquired at 4000 Hz sampling rate for sooting LPG flame at Re = 500, and Abel inversion was employed to estimate local field refractive index difference. A priori relationship between refractive index difference and temperature was established using the opposed flow flame reactor concept. Peak temperature observed in the near field region is around 1300 K, which falls in the range for a typical sooting flame. Although the sooting flame was observed it depicted typical flicker behavior of the unsteady laminar diffusion flame. Flicker behavior and flame puff formation can be attributed to the interaction of buoyancy sustained outer vortical structure with the flame surface. It was observed that additional air entrainment during puff formation leads to higher temperatures in the puff, which can be attributed to better oxidation of carbon soot and its precursors at downstream locations, a unique feature of sooting flames. Irrespective of whether spacetime evolution at any axial location or frequency spectrum analysis of temporal signal of hue at any spatial location or the amplitude-time signal for decomposed mode from POD analysis of color schlieren images, is employed the global unique flicker frequency of 13.33 Hz was observed in the near field LPG diffusion flame. Interestingly the first two dominant energy modes of POD analysis corresponds to flow features indicating strong ambient air entrainment.","PeriodicalId":41984,"journal":{"name":"JOURNAL OF FLOW VISUALIZATION AND IMAGE PROCESSING","volume":"27 1","pages":"297-318"},"PeriodicalIF":0.6,"publicationDate":"2020-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47835050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
VORTEX FORMATION IN A LOW ASPECT RATIO SYNTHETIC JET 低展弦比合成射流中涡的形成
IF 0.6
JOURNAL OF FLOW VISUALIZATION AND IMAGE PROCESSING Pub Date : 2020-01-01 DOI: 10.1615/JFLOWVISIMAGEPROC.2019031040
Jyoti Gupta, S. Satish, A. Saha
{"title":"VORTEX FORMATION IN A LOW ASPECT RATIO SYNTHETIC JET","authors":"Jyoti Gupta, S. Satish, A. Saha","doi":"10.1615/JFLOWVISIMAGEPROC.2019031040","DOIUrl":"https://doi.org/10.1615/JFLOWVISIMAGEPROC.2019031040","url":null,"abstract":"","PeriodicalId":41984,"journal":{"name":"JOURNAL OF FLOW VISUALIZATION AND IMAGE PROCESSING","volume":"27 1","pages":"117-141"},"PeriodicalIF":0.6,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67572905","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
WAKE SENSITIVITY OF FLOW OVER A SQUARE CYLINDER WITH RESPECT TO LENGTH OF AN ATTACHED FLEXIBLE WAKE SPLITTER 流过方形圆柱体的流动对所附柔性尾流分离器长度的尾流灵敏度
IF 0.6
JOURNAL OF FLOW VISUALIZATION AND IMAGE PROCESSING Pub Date : 2020-01-01 DOI: 10.1615/jflowvisimageproc.2020031008
K. Sharma, S. Dutta
{"title":"WAKE SENSITIVITY OF FLOW OVER A SQUARE CYLINDER WITH RESPECT TO LENGTH OF AN ATTACHED FLEXIBLE WAKE SPLITTER","authors":"K. Sharma, S. Dutta","doi":"10.1615/jflowvisimageproc.2020031008","DOIUrl":"https://doi.org/10.1615/jflowvisimageproc.2020031008","url":null,"abstract":"","PeriodicalId":41984,"journal":{"name":"JOURNAL OF FLOW VISUALIZATION AND IMAGE PROCESSING","volume":"27 1","pages":"269-296"},"PeriodicalIF":0.6,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67573570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
EDGE DETECTION ALGORITHM FOR COLOR IMAGES BASED ON THE REACTION-DIFFUSION EQUATION AND THE CELLULAR NEURAL NETWORK MODEL 基于反应扩散方程和细胞神经网络模型的彩色图像边缘检测算法
IF 0.6
JOURNAL OF FLOW VISUALIZATION AND IMAGE PROCESSING Pub Date : 2020-01-01 DOI: 10.1615/jflowvisimageproc.2020033379
zhang xianhong, Li Shuseng
{"title":"EDGE DETECTION ALGORITHM FOR COLOR IMAGES BASED ON THE REACTION-DIFFUSION EQUATION AND THE CELLULAR NEURAL NETWORK MODEL","authors":"zhang xianhong, Li Shuseng","doi":"10.1615/jflowvisimageproc.2020033379","DOIUrl":"https://doi.org/10.1615/jflowvisimageproc.2020033379","url":null,"abstract":"","PeriodicalId":41984,"journal":{"name":"JOURNAL OF FLOW VISUALIZATION AND IMAGE PROCESSING","volume":"1 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67573980","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
BEHAVIOR OF WALL SHEAR STRESS NEAR CAROTID ARTERY BIFURCATION AT ELEVATED PULSE RATES 脉率升高时颈动脉分叉处壁面剪应力的变化
IF 0.6
JOURNAL OF FLOW VISUALIZATION AND IMAGE PROCESSING Pub Date : 2020-01-01 DOI: 10.1615/jflowvisimageproc.2020031021
Shubham Uttam, Piru Mohan Khan, Irshad Alam, Somnath Roy
{"title":"BEHAVIOR OF WALL SHEAR STRESS NEAR CAROTID ARTERY BIFURCATION AT ELEVATED PULSE RATES","authors":"Shubham Uttam, Piru Mohan Khan, Irshad Alam, Somnath Roy","doi":"10.1615/jflowvisimageproc.2020031021","DOIUrl":"https://doi.org/10.1615/jflowvisimageproc.2020031021","url":null,"abstract":"","PeriodicalId":41984,"journal":{"name":"JOURNAL OF FLOW VISUALIZATION AND IMAGE PROCESSING","volume":"27 1","pages":"249-267"},"PeriodicalIF":0.6,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67573443","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
NONINTRUSIVE EXPERIMENTAL STUDY OF NATURAL CONVECTION IN AN OPEN SQUARE CAVITY AT DIFFERENT INCLINATIONS 不同倾角开方形腔内自然对流的非侵入性实验研究
IF 0.6
JOURNAL OF FLOW VISUALIZATION AND IMAGE PROCESSING Pub Date : 2020-01-01 DOI: 10.1615/jflowvisimageproc.2020031075
V. Kishor, R. Kumar, Suneet Singh, A. Srivastava
{"title":"NONINTRUSIVE EXPERIMENTAL STUDY OF NATURAL CONVECTION IN AN OPEN SQUARE CAVITY AT DIFFERENT INCLINATIONS","authors":"V. Kishor, R. Kumar, Suneet Singh, A. Srivastava","doi":"10.1615/jflowvisimageproc.2020031075","DOIUrl":"https://doi.org/10.1615/jflowvisimageproc.2020031075","url":null,"abstract":"","PeriodicalId":41984,"journal":{"name":"JOURNAL OF FLOW VISUALIZATION AND IMAGE PROCESSING","volume":"27 1","pages":"333-357"},"PeriodicalIF":0.6,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1615/jflowvisimageproc.2020031075","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67573887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
VORTEX RING BELOW A SPREADING ALCOHOL FILM ON WATER 在水面上扩散的酒精膜下面的漩涡环
IF 0.6
JOURNAL OF FLOW VISUALIZATION AND IMAGE PROCESSING Pub Date : 2020-01-01 DOI: 10.1615/jflowvisimageproc.2020031046
Anurag Pant, B. A. Puthenveettil
{"title":"VORTEX RING BELOW A SPREADING ALCOHOL FILM ON WATER","authors":"Anurag Pant, B. A. Puthenveettil","doi":"10.1615/jflowvisimageproc.2020031046","DOIUrl":"https://doi.org/10.1615/jflowvisimageproc.2020031046","url":null,"abstract":"We study the expansion of a vortex ring generated due to the spreading of ethanol-water droplets, with ethanol concentration range of 20%6Ce6100%, on the surface of a 50 mm deep water layer. Once deposited on the water layer, the surface tension difference leads to some part of the lighter ethanol droplet spreading as a thin film over the water layer. We observe an expanding vortex ring below the radially spreading film front. We visualize the film spreading from top using aluminum particles, while the vortex is visualized from the side using polyamide particles with LIF from the dyed drop used to distinguish the alcohol from the water. PIV is used to obtain the velocity and the vorticity fields below the spreading film. Vortex regions and their centers, identified by the λ2 method from the velocity fields, are tracked to determine the vortex expansion. We show that the vortex ring expands with the same velocity of expansion as that of the spreading ethanol film at the free surface, possibly since the vortex ring is created due to the surface tension difference across the film front. Using dimensional arguments, we also propose a scaling for the upward velocity, induced by this expanding vortex ring, uΓ and show that uΓ ∼ t−1/2.","PeriodicalId":41984,"journal":{"name":"JOURNAL OF FLOW VISUALIZATION AND IMAGE PROCESSING","volume":"1 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67573949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
LIQUID AND VAPOR PHASE BEHAVIOR OF HIGH PRESSURE n-HEXANE SPRAY 高压正己烷喷雾液气相行为
IF 0.6
JOURNAL OF FLOW VISUALIZATION AND IMAGE PROCESSING Pub Date : 2020-01-01 DOI: 10.1615/jflowvisimageproc.2020034163
M. Pal
{"title":"LIQUID AND VAPOR PHASE BEHAVIOR OF HIGH PRESSURE n-HEXANE SPRAY","authors":"M. Pal","doi":"10.1615/jflowvisimageproc.2020034163","DOIUrl":"https://doi.org/10.1615/jflowvisimageproc.2020034163","url":null,"abstract":"","PeriodicalId":41984,"journal":{"name":"JOURNAL OF FLOW VISUALIZATION AND IMAGE PROCESSING","volume":"1 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67573988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
PREFACE: 7th INTERNATIONAL AND 45th NATIONAL FLUID MECHANICS AND FLUID POWER CONFERENCE 前言:第七届、第四十五届国际流体力学与流体动力学术会议
IF 0.6
JOURNAL OF FLOW VISUALIZATION AND IMAGE PROCESSING Pub Date : 2020-01-01 DOI: 10.1615/jflowvisimageproc.v27.i1.10
A. Srivastava, S. Balasubramanian, K. Muralidhar
{"title":"PREFACE: 7th INTERNATIONAL AND 45th NATIONAL FLUID MECHANICS AND FLUID POWER CONFERENCE","authors":"A. Srivastava, S. Balasubramanian, K. Muralidhar","doi":"10.1615/jflowvisimageproc.v27.i1.10","DOIUrl":"https://doi.org/10.1615/jflowvisimageproc.v27.i1.10","url":null,"abstract":"","PeriodicalId":41984,"journal":{"name":"JOURNAL OF FLOW VISUALIZATION AND IMAGE PROCESSING","volume":"27 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1615/jflowvisimageproc.v27.i1.10","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67589839","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
WAVE BREAKING AND SWIRLS IN A CIRCULAR CYLINDRICAL CONTAINER DURING LATERAL SLOSHING 横向晃动时圆柱形容器内的波浪破碎和漩涡
IF 0.6
JOURNAL OF FLOW VISUALIZATION AND IMAGE PROCESSING Pub Date : 2020-01-01 DOI: 10.1615/JFLOWVISIMAGEPROC.2020031038
D. Raja, S. Das
{"title":"WAVE BREAKING AND SWIRLS IN A CIRCULAR CYLINDRICAL CONTAINER DURING LATERAL SLOSHING","authors":"D. Raja, S. Das","doi":"10.1615/JFLOWVISIMAGEPROC.2020031038","DOIUrl":"https://doi.org/10.1615/JFLOWVISIMAGEPROC.2020031038","url":null,"abstract":"","PeriodicalId":41984,"journal":{"name":"JOURNAL OF FLOW VISUALIZATION AND IMAGE PROCESSING","volume":"27 1","pages":"319-332"},"PeriodicalIF":0.6,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67573597","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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