检索结果-南通市图书馆

Denoising and fuel spray droplet detection from light-scattered images using deep learning

能源与人工智能(英文) 2022年第1期7卷 91-100页

作者： Veeraraghava Raju Hasti Dongyun Shin School of Mechanical Engineering Purdue UniversityWest LafayetteIN47907 United States of America School of Aeronautics and Astronautics Purdue UniversityWest LafayetteIN47907 United States of America

A deep learning-based method for denoising and detecting the gas turbine engine spray droplets in the lightscattered image(Mie scattering)is proposed for the first time.A modified U-Net architecture is employed in the proposed method to denoise and regenerate the *** have compared and validated the performance of the modified U-Net architecture with standard conventional neural networks(CNN)and modified ResNet architectures for denoising spray images from the Mie scattering *** modified U-Net architecture performed better than the other two networks with significantly lower Mean Squared Error(MSE)on the validation *** modified U-Net architecture also produced images with the highest Power Signal to Noise Ratio(PSNR)compared to the other two *** superior performance of the modified U-Net architecture is attributed to the encoder-decoder *** downsampling,as part of the encoder,only the most prominent features of the image are selectively retained by excluding any *** reconstruction of the noisefree features has produced a more accurate and better denoised *** denoised images are then passed through a center predictor CNN to determine the location of the droplets with an average error of 1.4 *** trained deep learning method for denoising and droplet center detection takes about 2.13 s on a single graphics processing unit(GPU).This study shows the promise for real-time processing of the experimental data using the well-optimized network.

关键词： Image denoising Droplet detection fuel spray Mie scattering Deep learning Artificial intelligence Convolutional Neural Networks ResNet U-Net

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Analysis of spray Evaporation in a Model Evaporating Chamber:Effect of Air Swirl

引用

Journal of Thermal Science 2023年第2期32卷 837-853页

作者： Mohammad Sadegh ABEDINEJAD Department of Mechanical Engineering Faculty of EngineeringAlzahra UniversityTehranIran

spray evaporation of liquid fuels in a turbulent flow is a common process in various engineering applications such as *** between fuel droplets(discrete phase)and fluid flow(continuous phase)have a considerable effect on liquid fuel *** this paper,both the single-and two-phase modeling of liquid fuel injection into a model evaporating chamber are *** influences of important issues such as turbulence models,coupling between gas phase and droplets,secondary break-up and air swirling on the current spray simulation are ***,the shear stress transport turbulence model,Taylor analogy break-up and two-way coupling models are applied to simulate the two-phase *** and spray of fuel droplets in hot air are modeled employing an Eulerian-Lagrangian *** current results show an acceptable agreement with the *** the fuel atomizer,bigger droplets are detected near the spray edge and minor droplets are situated in the *** increasing the droplets axial position,the droplets diameter decreases with a finite *** smaller droplets have a deeper penetration,but their lifetime is smaller and they evaporate sooner.A linear relation between penetration and lifetime of smaller droplets is *** droplet penetration and mean axial velocity of gas phase are observed for no air swirling *** effect of variation of swirl number on the lifetime of droplets is almost *** enhancing the swirl number,the uniformity of droplet size distribution is reduced and some large droplets are formed up in the domain.

关键词： secondary break-up droplet evaporation air swirling fuel spray gas-droplets coupling

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：