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Induction Electrohydrodynamic Pump in a Vertical Configuration Part 2. Experimental Study 垂直结构的感应电液泵第2部分。实验研究
1985 Annual Meeting Industry Applications Society Pub Date : 1985-10-01 DOI: 10.1115/1.3250735
J. Seyed-Yagoobi, J. Chato, J. Crowley, P. Krein
{"title":"Induction Electrohydrodynamic Pump in a Vertical Configuration Part 2. Experimental Study","authors":"J. Seyed-Yagoobi, J. Chato, J. Crowley, P. Krein","doi":"10.1115/1.3250735","DOIUrl":"https://doi.org/10.1115/1.3250735","url":null,"abstract":"An Induction electrohydrodynamic (EHD) pump in axisym- metric, vertical configuration was designed and built. The flow rates were measured for various values of frequency, voltage, wavelength, electric conductivity, and entrance temperature profile in both forward and backward modes. The experimental data are generally in good agreement with the theoretical model presented in Part 1. With the present apparatus at relatively low voltages, velocities four times higher than natural circulation velocity are easily obtained. The external pressure load and entrance temperature profile play an important role on the operation of the pump and must be considered carefully in the design.","PeriodicalId":360787,"journal":{"name":"1985 Annual Meeting Industry Applications Society","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1985-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122399092","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: 34
Induction Electrohydrodynamic Pump in a Vertical Configuration Part 1. Theory 垂直结构的感应电液泵第1部分。理论
1985 Annual Meeting Industry Applications Society Pub Date : 1985-10-01 DOI: 10.1115/1.3250734
J. Seyed-Yagoobi, J. Chato, J. Crowley, P. Krein
{"title":"Induction Electrohydrodynamic Pump in a Vertical Configuration Part 1. Theory","authors":"J. Seyed-Yagoobi, J. Chato, J. Crowley, P. Krein","doi":"10.1115/1.3250734","DOIUrl":"https://doi.org/10.1115/1.3250734","url":null,"abstract":"An induction electrohydrodynamic (EHD) pump in an axisymmetric, vertical configuration is studied theoretically. The model includes the effect of entrance conditions, buoyancy effects, secondary flow, and Joule heating. Both the forward (cooled wall) and backward (heated wall) modes are investigated. A finite difference technique Is used to obtain the numerical solutions. A set of these solutions is presented to show the influence of the controlling factors of operating an induction EHD pump. The results indicate that the entrance temperature profile plays an important role in the operation of the pump because steeper profiles produce higher velocities. The pump must be operated at an optimum frequency, wavelength, and electric conductivity level. The model predicts similar pump behavior in the forward and backward modes.","PeriodicalId":360787,"journal":{"name":"1985 Annual Meeting Industry Applications Society","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1985-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122238151","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: 46
A Three-Dimensional Mathematical Model for Flow and Heat Transfer in Electric Glass Furnaces 电玻璃炉内流动与传热的三维数学模型
1985 Annual Meeting Industry Applications Society Pub Date : 1985-10-01 DOI: 10.1080/01457638508939639
M. Choudhary
{"title":"A Three-Dimensional Mathematical Model for Flow and Heat Transfer in Electric Glass Furnaces","authors":"M. Choudhary","doi":"10.1080/01457638508939639","DOIUrl":"https://doi.org/10.1080/01457638508939639","url":null,"abstract":"A three-dimensional mathematical model was developed for calculating Joule heat release, glass flow and heat transfer in electric glass furnaces. The model developed here allows for multiple electrodes, multi-phase firing, and for the feeding and withdrawal of molten glass. The model is fairly general with respect to the arrangement of the electrodes, the firing pattern and the choice of the boundary conditions and it allows for the temperature dependence of the glass properties. The model was used to calculate electric potential, rate of heat release, flow pattern, and temperature distribution in the melting of flint and amber glasses in an all-electric melter with side-entering electrodes. The calculations wére performed for the industrial conditions of pull, power, and the electric firing scheme. The bulk glass temperature was found to be very uniform with large temperature gradients near the boundaries. The calculated flow pattern was in general quite complex with several circulation loops. The temperature and the maximum velocity for the amber glass were found to be higher than the corresponding values for the flint glass.","PeriodicalId":360787,"journal":{"name":"1985 Annual Meeting Industry Applications Society","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1985-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115819784","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: 16
A Pulsewidth Modulated Inverter with Parallel-Connected Transistors by Using Current Sharing Reactors 采用共流电抗器并联晶体管的脉宽调制逆变器
1985 Annual Meeting Industry Applications Society Pub Date : 1984-01-20 DOI: 10.1541/IEEJPES1972.104.49
K. Matsui
{"title":"A Pulsewidth Modulated Inverter with Parallel-Connected Transistors by Using Current Sharing Reactors","authors":"K. Matsui","doi":"10.1541/IEEJPES1972.104.49","DOIUrl":"https://doi.org/10.1541/IEEJPES1972.104.49","url":null,"abstract":"A technique of parallel-connection of transistors by using current sharing reactors is reported for the pulsewidth modulated (PWM) transistor inverter. The proposed technique not only increases the current capacity to handle but also decreases the output harmonic contents. The output voltage waveforms of the proposed inverter have some voltage levels during half cycle, so it would be anticipated that it is difficult to analyze the output harmonics. For such waveforms, a frequency analysis approach is described, whose results are verified by experiments.","PeriodicalId":360787,"journal":{"name":"1985 Annual Meeting Industry Applications Society","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1984-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124396818","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: 142
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