Performance comparison of jet pumps with round and sharp edge of small opening in oscillatory flow

2018 ◽  
Vol 139 ◽  
pp. 562-568 ◽  
Author(s):  
Ye Feng ◽  
Ke Tang ◽  
Tao Jin ◽  
Kaihao Zhang ◽  
Rui Yang
2015 ◽  
Vol 137 (4) ◽  
pp. 1722-1731 ◽  
Author(s):  
Joris P. Oosterhuis ◽  
Simon Bühler ◽  
Theo H. van der Meer ◽  
Douglas Wilcox

2007 ◽  
Vol 19 (11) ◽  
pp. 114101 ◽  
Author(s):  
Mingzhi Zheng ◽  
Jie Li ◽  
M. R. Mackley ◽  
Jianjun Tao
Keyword(s):  

2013 ◽  
Vol 57 (1-2) ◽  
pp. 245-253 ◽  
Author(s):  
Xue-Guan Song ◽  
Joon-Hong Park ◽  
Seung-Gyu Kim ◽  
Young-Chul Park

Author(s):  
Oliver C. Wells

The low-loss electron (LLE) image in the scanning electron microscope (SEM) is useful for the study of uncoated photoresist and some other poorly conducting specimens because it is less sensitive to specimen charging than is the secondary electron (SE) image. A second advantage can arise from a significant reduction in the width of the “penetration fringe” close to a sharp edge. Although both of these problems can also be solved by operating with a beam energy of about 1 keV, the LLE image has the advantage that it permits the use of a higher beam energy and therefore (for a given SEM) a smaller beam diameter. It is an additional attraction of the LLE image that it can be obtained simultaneously with the SE image, and this gives additional information in many cases. This paper shows the reduction in penetration effects given by the use of the LLE image.


1994 ◽  
Vol 4 (4) ◽  
pp. 677-688 ◽  
Author(s):  
A. P. Krekhov ◽  
L. Kramer
Keyword(s):  

Author(s):  
Molla Asmare ◽  
Mustafa Ilbas

Nowadays, the most decisive challenges we are fronting are perfectly clean energy making for equitable and sustainable modern energy access, and battling the emerging alteration of the climate. This is because, carbon-rich fuels are the fundamental supply of utilized energy for strengthening human society, and it will be sustained in the near future. In connection with this, electrochemical technologies are an emerging and domineering tool for efficiently transforming the existing scarce fossil fuels and renewable energy sources into electric power with a trivial environmental impact. Compared with conventional power generation technologies, SOFC that operate at high temperature is emerging as a frontrunner to convert the fuels chemical energy into electric power and permits the deployment of varieties of fuels with negligible ecological destructions. According to this critical review, direct ammonia is obtained as a primary possible choice and price-effective green fuel for T-SOFCs. This is because T-SOFCs have higher volumetric power density, mechanically stable, and high thermal shocking resistance. Also, there is no sealing issue problem which is the chronic issues of the planar one. As a result, the toxicity of ammonia to use as a fuel is minimized if there may be a leakage during operation. It is portable and manageable that can be work everywhere when there is energy demand. Besides, manufacturing, onboard hydrogen deposition, and transportation infrastructure connected snags of hydrogen will be solved using ammonia. Ammonia is a low-priced carbon-neutral source of energy and has more stored volumetric energy compared with hydrogen. Yet, to utilize direct NH3 as a means of hydrogen carrier and an alternative green fuel in T-SOFCs practically determining the optimum operating temperatures, reactant flow rates, electrode porosities, pressure, the position of the anode, thickness and diameters of the tube are still requiring further improvement. Therefore, mathematical modeling ought to be developed to determine these parameters before planning for experimental work. Also, a performance comparison of AS, ES, and CS- T-SOFC powered with direct NH3 will be investigated and best-performed support will be carefully chosen for practical implementation and an experimental study will be conducted for verification based on optimum parameter values obtained from numerical modeling.


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