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Experimental Investigation of a Centrifugal Pump Working Under Gas-Liquid Two Phase Flow Condition 气液两相流条件下离心泵的实验研究
Pub Date : 2020-09-25 DOI: 10.17577/IJERTV9IS090330
A. Zende, Akshay Nathgosavi, Rushikesh Gawade, Shrikant Patil, Vinayak Nikam, Rahul Gaji
The centrifugal pump operation under gas-liquid two phase flow condition is a common problem in the oil and gas industry. Same problem is encountered in electrical submersible pumps. Moreover in the loss of coolant accidents (LOCA) the water in the pressurized water reactor flashes into steam and pump is operated in steam-water two phase flow condition. The performance of the centrifugal pump is found to be decreased under gas-liquid two phase flow condition. However, the limited literatures are available for the study. In this scenario, this paper presents the experimental work to investigate the performance of centrifugal pump operated in gas-liquid two phase flow condition. The performance of pump working in water phase flow condition is analyzed at different rotational speed to validate the result with standard performance characteristics. Then experiments are performed by introducing the air at inlet of a pump. The performance of a pump working under air-water flow condition is found to be deteriorated continuously from part load to overload operating condition. Keywords—Centrifugal pump; single phase flow; two phase flow; performance.
离心泵在气液两相流条件下运行是油气工业中常见的问题。电潜泵也遇到了同样的问题。在失冷剂事故中,压水堆内的水闪蒸,泵在蒸汽-水两相流状态下运行。在气液两相流工况下,离心泵的性能有所下降。然而,可供研究的文献有限。在这种情况下,本文对离心泵在气液两相流条件下的性能进行了实验研究。对水泵在水相流工况下不同转速下的性能进行了分析,并与标准性能特性进行了验证。然后通过在泵入口处引入空气进行了实验。水泵在空气-水工况下工作,从部分负荷到超负荷运行状态,其性能不断恶化。Keywords-Centrifugal泵;单相流;两相流;表演
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引用次数: 0
Consequences and Determinants Towards Business Analytics Success 商业分析成功的后果和决定因素
Pub Date : 2020-09-24 DOI: 10.17577/IJERTV9IS090282
B. S. Teja, Vadla Sai Charith
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引用次数: 0
Carry Out Computer Tasks with Gesture using Image Pre-Processing and TensorFlow Framework 使用图像预处理和TensorFlow框架进行手势计算机任务
Pub Date : 2020-09-24 DOI: 10.17577/IJERTV9IS090303
Pratik Magar, Sanjay Singh, Swapnil Mishra, P. Gaikwad
The method for real time Hand Gesture Recognition and feature extraction using a web camera. For humans, hands are used most frequently to communicate and interact with machines. Mouse and Keyboard are the basic input/output to computers and the use of both the devices require the use of hands. Most important and immediate information exchange between man and machine is through visual and aural aid, but this communication is one-sided. To help somewhat mouse remedies this problem, but there are limitations as well. Although hands are most commonly used for day to day physical manipulation tasks, but in some cases they are also used for communication. Hand gestures support us in our daily communications to convey our messages clearly. Hands are most important for mute and deaf people, who depends on their hands and gestures to communicate, so hand gestures are vital for communication in sign language. Hand gesture interaction has been the trending technology for humancomputer interaction (HCI). Frequently a number of research works are carried out in this area to expedite and contrive interaction with computers. In this project, we are attempting to create a real-time human-computer interaction system (HCI) using different hand gestures i.e, hand signs. We implemented a system that recognizes the hand gesture performed using the simple web camera of a PC. We used the already established OpenCV library with TensorFlow to implement the various methods of Image Processing. Operations that were carried out were Capturing frames, Background Subtraction using MOG filter, Noise Reduction using Gaussian Blur, converting the captured image to binary image, finding the contours through Convex Hull method which is used for removing convexity defects and segment the image. Using these segmented images we built our own dataset that was used to train the model with TensorFlow. Then we used these methods again for the segmentation of the input image which is then passed to the model to get the output class label. Index Terms HCI, GOS, CNN, GUI, ROI, GPU.
基于网络摄像头的实时手势识别和特征提取方法。对于人类来说,手是最常用来与机器交流和互动的。鼠标和键盘是计算机的基本输入/输出,使用这两种设备都需要使用双手。人与机器之间最重要和最直接的信息交流是通过视觉和听觉辅助,但这种交流是片面的。鼠标可以稍微解决这个问题,但也有局限性。虽然手最常用于日常的物理操作任务,但在某些情况下,它们也用于交流。手势帮助我们在日常交流中清晰地传达信息。对于哑巴和聋哑人来说,手是最重要的,他们依靠手和手势来交流,所以手势在手语交流中是至关重要的。手势交互已成为人机交互的发展趋势。经常在这一领域进行一些研究工作,以加快和设计与计算机的交互。在这个项目中,我们试图创建一个实时人机交互系统(HCI)使用不同的手势,即手势。我们实现了一个系统,该系统可以识别使用PC的简单网络摄像头执行的手势。我们使用已经建立的OpenCV库和TensorFlow来实现各种图像处理方法。实现了捕获帧,使用MOG滤波器进行背景减影,使用高斯模糊进行降噪,将捕获的图像转换为二值图像,使用凸壳法寻找轮廓,并使用凸壳法去除凹凸性缺陷并分割图像。使用这些分割的图像,我们建立了自己的数据集,用于用TensorFlow训练模型。然后我们再次使用这些方法对输入图像进行分割,然后将其传递给模型以获得输出类标签。索引术语HCI, GOS, CNN, GUI, ROI, GPU。
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引用次数: 0
Electromagnetic Launcher : Review of Various Structures 电磁发射器:各种结构的回顾
Pub Date : 2020-09-24 DOI: 10.17577/IJERTV9IS090223
Siddhi Santosh Reelkar, U. V. Patil, V. Khatavkar, Hrishikesh Mehta, Utkarsh Alset
A theoretic review of electromagnetic coil-gun launcher and its types are illustrated in this paper. In recent years conventional launchers like steam launchers, chemical launchers are replaced by electromagnetic launchers with auxiliary benefits. The electromagnetic launchers like railgun and coil-gun elevated with multi pole field structure delivers great muzzle velocity and huge repulse force in limited time. Various types of coil-gun electromagnetic launchers are compared in this paper for its structures and characteristics. The paper focuses on the basic formulae for calculating the values of inductance and resistance of electromagnetic
本文对电磁线圈炮发射装置及其类型进行了理论综述。近年来,蒸汽发射器、化学发射器等传统发射器被具有辅助性能的电磁发射器所取代。轨道炮和线圈炮等电磁发射器采用多极场结构架空,在有限的时间内具有较大的初速和巨大的排斥力。本文对各种型号的线圈炮电磁发射器的结构和特点进行了比较。本文重点介绍了计算电磁电感和电阻值的基本公式
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引用次数: 1
A Study based upon the Mechanical and Durable Properties of Concrete using Sugarcane Ash, Marble waste Powder and Recycled Aggregate as Partial Replacement of OPC, Fine Aggregate and Coarse Aggregate Respectively 甘蔗灰、大理石废粉和再生骨料分别部分替代OPC、细骨料和粗骨料的混凝土力学性能和耐久性能研究
Pub Date : 2020-09-24 DOI: 10.17577/IJERTV9IS090355
Pardeep Singh, V. Khandelwal
The demand of utilization of the waste product from the industries is at its peak therefore, several experimental investigations have been carried out to examine their physical and chemical properties when they are used as a replacement material in concrete. This lead to the revolutionary techniques which achieved high strength parameters. The crushed concrete is the most impeccable technique to produce the recycled aggregate. It can also be derived from any kind of concrete debris. The main advantage of recycled concrete aggregate (RCA) is that it resembles the same properties as that of concrete. Sugar bagasse ash (SBA) is the burnt by product of sugarcane’s bagasse. It is very fine and it becomes the main advantage of bagasse ash. Another type of replacement material is marble waste powder and it is derived by cutting and polishing the marble. In the present experimental study, which was conducted in an attempt to utilize these waste product, design mix of concrete was designed by partially replacing cement with bagasse ash, fine aggregate with marble powder and coarse aggregate with recycled concrete aggregate at varying proportions. Different tests were conducted in order to evaluate and determine its strength parameters. The gist, the conclusion which was made for the present study is that the compressive strength and flexural strength tends to increase at the beginning and gives maximum value for the design mix containing 20% SBA, 20% Marble Powder and 25% RCA and after this the strength starts to fall. The maximum split tensile strength was achieved with the design mix which entails 20% SBA, 40% Marble Powder and 25% RCA whereas, other mixes gives satisfactory result.
利用工业废料的需求正处于顶峰,因此,已经进行了几项实验研究,以检查它们作为混凝土替代材料时的物理和化学特性。这导致了实现高强度参数的革命性技术。破碎混凝土是生产再生骨料最完美的技术。它也可以从任何种类的混凝土碎片中得到。再生混凝土骨料(RCA)的主要优点是它具有与混凝土相同的性能。甘蔗渣灰(SBA)是甘蔗甘蔗渣燃烧后的副产品。它非常细,成为甘蔗渣灰的主要优点。另一种替代材料是大理石废粉,它是由大理石切割抛光而成的。在本试验研究中,为了利用这些废料,设计了混凝土的设计配合比,用甘蔗渣灰代替部分水泥,用大理石粉代替细骨料,用不同比例的再生混凝土骨料代替粗骨料。为了评估和确定其强度参数,进行了不同的试验。本研究的要点和结论是,抗压强度和抗折强度在开始时趋于增加,并且在含有20% SBA, 20%大理石粉和25% RCA的设计混合物中达到最大值,之后强度开始下降。采用20% SBA、40%大理石粉和25% RCA的设计混合料获得了最大的劈裂抗拉强度,而其他混合料则获得了令人满意的结果。
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引用次数: 2
Design Optimization and Analysis of Braking System of Go-Kart 卡丁车制动系统设计优化与分析
Pub Date : 2020-09-24 DOI: 10.17577/IJERTV9IS090339
M. Rajkumar, M. Soundarrajan, Queen Mary
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引用次数: 2
An IoT and AI based Flood Monitoring and Rescue System 基于物联网和人工智能的洪水监测与救援系统
Pub Date : 2020-09-24 DOI: 10.17577/IJERTV9IS090340
Ajim I. Pathan, Aishwarya P. Kulkarni, Nikita Gaikwad, Prajakta M. Powar, A. Surve
One of the biggest natural disasters India had ever faced was floods in Western Maharashtra in August 2005 and August 2019. The primary objective of this research is to provide an innovative and sustainable solution required to monitor flood situations and perform rescue operations in the worst affected Sangli, Kolhapur and Satara districts. This attempt aims at providing IoT-based flood detection and AI-based rescue operation through the system. This research makes use of Internet of Things and Artificial Intelligence technologies to provide a reliable and implementable solution for the above problem. This innovative approach uses Arduino Uno microcontroller for flood detection based on rise of water level, humidity, atmospheric pressure and temperature measured through BMP180 sensor. Raspberry Pi has been used for carrying out drone-based rescue operations by detecting the number of people stuck in flooded regions using YOLO object detection algorithm and notifying concerned authorities about them through web portal and mobile application. Keywords— Artificial Intelligence, Drones, Flood Monitoring System, Flood Rescue System, Internet of Things
印度有史以来面临的最大自然灾害之一是2005年8月和2019年8月西马哈拉施特拉邦的洪水。这项研究的主要目标是提供一种创新和可持续的解决方案,以监测受灾最严重的Sangli, Kolhapur和Satara地区的洪水情况并开展救援行动。本次尝试旨在通过系统提供基于物联网的洪水检测和基于人工智能的救援操作。本研究利用物联网和人工智能技术,为上述问题提供可靠、可实现的解决方案。这种创新的方法使用Arduino Uno微控制器进行洪水检测,基于通过BMP180传感器测量的水位、湿度、大气压力和温度的上升。树莓派利用“YOLO”目标探测算法,探测被困在洪水地区的人数,并通过门户网站和移动应用程序通知有关当局,进行无人机救援行动。关键词:人工智能,无人机,洪水监测系统,洪水救援系统,物联网
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引用次数: 4
A Link Between Colors and Emotions; A Study of Undergraduate Females 色彩与情感之间的联系大学生女性研究
Pub Date : 2020-09-24 DOI: 10.17577/IJERTV9IS090319
Achint Kaur
This study examined the association of 3 primary colors blue, red and yellow (Munsell color system) and 3 neutral colors: black, white and grey to 4 emotions: happiness, fear, anger and sadness, in females 18-21 years old. The undergraduate females from various background, courses and age were required to associate the colors to the specific emotions and state why. It was predicted that the three primary colors would be associated with high energy emotions such as anger and happiness and the three neutral colors with low energy emotions such as sadness and fear in the sample. In the results, more than half of the subjects associated the primary colors with happiness, anger. Black, was associated majorly with happiness, red with fear, grey to sadness, White with fear. The color blue was poorly linked with anger and strongly with happiness like the color yellow across all the age groups.
这项研究调查了18-21岁女性的三种原色蓝、红、黄(蒙塞尔色彩系统)和三种中性色黑、白、灰与四种情绪(快乐、恐惧、愤怒和悲伤)的联系。来自不同背景、课程和年龄的女大学生被要求将颜色与特定的情绪联系起来,并说明原因。据预测,在样本中,三种原色与愤怒和快乐等高能量情绪有关,而三种中性色与悲伤和恐惧等低能量情绪有关。结果显示,超过一半的受试者将三原色与快乐、愤怒联系在一起。黑色代表快乐,红色代表恐惧,灰色代表悲伤,白色代表恐惧。在所有年龄组中,蓝色与愤怒的关系不大,与快乐的关系很大,就像黄色一样。
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引用次数: 2
Cellular Light Weight Concrete using Glass Fiber 使用玻璃纤维的蜂窝轻质混凝土
Pub Date : 2020-09-24 DOI: 10.17577/IJERTV9IS090239
Shubham Watharkar, Sandesh Dhavale, Pranav Kochrekar, R. Jadhav, Deepali Phadatare
Foamed concrete is a material which basically consist of cement based mortar with minimum (atleast ) 20-25 % of air by volume. It has lower strength than conventional concrete. It is a non loadbearing structure element. Now a days investigation is carried out on the concrete blocks by varying density of foam in quary dust. Constro chem foaming agent is a synthetic foam which is used to vary the density of concrete. The main aim of this project is to decrease the density of concrete by using optimum amount of foam. The results are discussed in detail with respect to test conducted such as compressive strength, split tensile strength and flexural strength with varying quantity of glass fibre and foam. In civil engineering works foamed cement concrete can be used in numerous ways as it has unique characteristics which can be exploited in works. Foamed concrete will flow readily from an outlet to fill restricted and irregular cavities, it requires no compaction and it can be pumped by a significant distance or height. Therefore it can be used as a free flowing and self setting fills. This report provides a detailed summary of foam concrete with respect to constituents, production, engineering properties and use.
泡沫混凝土是一种基本上由水泥基砂浆组成的材料,其体积上至少含有20- 25%的空气。它的强度低于传统混凝土。它是一种非承重结构元件。现在,通过改变采石场粉尘中的泡沫密度,对混凝土块进行了为期一天的调查。建筑化学发泡剂是一种用于改变混凝土密度的合成泡沫。该项目的主要目的是通过使用最佳量的泡沫来降低混凝土的密度。详细讨论了不同玻璃纤维和泡沫材料的抗压强度、劈裂抗拉强度和抗弯强度的试验结果。在土木工程中,泡沫水泥混凝土以其独特的特点可被广泛应用。泡沫混凝土可以很容易地从出口流出,填充受限制和不规则的空洞,它不需要压实,并且可以泵送很远的距离或高度。因此,它可以作为一个自由流动和自设定填料。本文对泡沫混凝土的组成、生产、工程性能和用途进行了详细的综述。
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引用次数: 1
Production of Zero Waste Biodiesel by Utilizing By-Products Glycerin and Biomass 利用副产物甘油和生物质生产零废生物柴油
Pub Date : 2020-09-24 DOI: 10.17577/IJERTV9IS090230
U. SomeshM, U. Murthy
Biodiesel is a popular alternative fuel. It is carbon neutral, has emissions equivalent to or below diesel, is biodegradable, non-toxic, and is significantly cheaper to manufacture than its petroleum equivalent. Biodiesel production creates glycerin as a byproduct. Although glycerin does have its commercial uses, even the current modest biodiesel production has outstripped glycerin demand. In this experiment the excess waste glycerin is combined with waste biomass to produce combustible pellets as an alternative to coal for energy production. The raw materials (waste glycerin and waste biomass) are mixed by weight ratio and blended by hand in a large mixing bowl. Various ratios of glycerin (38.5g and 31.3g) to waste biomass (50g) were then mixed to produce a crude unfinished material. Initial results proved worthwhile, coming in at 15.4, 15.6, and 15.2 kJ/g and displaying a respectable error rate of only 10% for ad-hoc apparatus. The Glycerin/Sawdust pellets produced an energy yield of ≈16 kJ/g, placing their energy content within the expected range for existing fuel pellet infrastructure. The pellets can be viably manufactured using simple manufacturing equipment, and can be combusted as fuel in existing fuel pellet and Coal burning facilities. This will greatly facilitate pellet production and adoption as an alternative fuel source in increasingly resource-conscious world.
生物柴油是一种流行的替代燃料。它是碳中性的,排放量相当于或低于柴油,可生物降解,无毒,而且制造成本明显低于石油当量。生物柴油生产的副产品是甘油。虽然甘油确实有其商业用途,但即使是目前适度的生物柴油生产也已经超过了甘油的需求。在这个实验中,多余的废甘油与废生物质相结合,生产可燃颗粒,作为能源生产的煤炭替代品。原料(废甘油和废生物质)按重量比混合,并在一个大搅拌碗中手工混合。然后将不同比例的甘油(38.5g和31.3g)与废生物质(50g)混合以产生未完成的原料。最初的结果证明是值得的,分别为15.4、15.6和15.2千焦/克,对于特殊设备,错误率仅为10%。甘油/木屑颗粒产生的能量产量≈16 kJ/g,将其能量含量置于现有燃料颗粒基础设施的预期范围内。使用简单的制造设备可以可行地制造颗粒,并且可以在现有的燃料颗粒和燃煤设施中作为燃料燃烧。这将极大地促进颗粒的生产和采用,在日益注重资源的世界中作为替代燃料来源。
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引用次数: 0
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International Journal of Engineering Research and
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