Computationally efficient modeling simulation of transport phenomena in fuel cell stacks

... understanding of transport phenomena in fuel cells, and become an indispensable tool in fuel cell research and development The beginning of modeling of fuel cells can be traced back to the work of Sampath ... output of a given fuel cell stack will depend on its size Increasing the number of cells in a stack increases the voltage, while increasing the surfac...

Ngày tải lên: 15/09/2015, 22:19

... taken into account 1.2 MATHEMATICAL MODELING OF LITHIUM- ION BATTERIES 1.2 Mathematical modeling of lithium- ion batteries Mathematical modeling and computational analysis are extensively employed in ... transition metal employed for the positive electrode (1.3) 1.1 OVERVIEW OF LITHIUM- ION BATTERIES Figure 1.2: Schematic of a lithium- ion battery opera...

Ngày tải lên: 09/09/2015, 08:12

... declare that the thesis is my original work and it has been written by me in its entirety I have duly acknowledged all the sources of information which have been used in the thesis This thesis has ... information which have been used in the thesis This thesis has also not been submitted for any degree in any university previously _ Karthik Somasundaram 17 October 2012 à

Ngày tải lên: 09/09/2015, 17:54

... used to analyse and evaluate the performance of a planar and a tubular-shaped PEM fuel cell 2.1 Computational domain The full computational domains for the planar and tubular-shaped PEM fuel cell ... conditions are specified at all external boundaries of the computational domain as well as boundaries for various mass and scalar equations inside the computationa...

Ngày tải lên: 05/09/2013, 14:58

Ngày tải lên: 13/11/2014, 09:53

... Introduction to spintronics physics – spin- dependent transport in ferromagnets (FM) The foundation of spintronics is based on the influence of the spin of an electron on its transport properties in FM ... sensitivity of spin- dependent tunneling (in MTJs and granular films) compared to spin- dependent scattering in metallic GMR structures is because the number...

Ngày tải lên: 09/09/2015, 10:15

... convective and diffusive heat and mass transfer, electrode kinetics, transport and phase-change mechanism of water, and potential fields in a micro PEM fuel cell with nature inspired gas flow channels ... fuel cells J Power Sources, 2004, 125(2), 40–51 [16] Maher A. R Sadiq Al-Baghdadi A CFD analysis of transport phenomena and electrochemical...

Ngày tải lên: 09/09/2015, 10:17

... an important role in transporting passengers and cargo Especially in transporting passengers in urban area, long distance, container, inter – area cargo, etc… The first line of VietNam Railways ... train runs along the Red River All trains leave in the evening from Hanoi and arrive at Lao Cai train station in the early morning Trains also leave in the evening from Lao Cai and ar...

Ngày tải lên: 03/09/2012, 09:19

... point in the sentence where intonation is perceived to rise or fall serves as an important indicator of stress 1.2 Bolinger found that an increase in intensity with no corresponding pitch increase ... pitch raise Interestingly enough, a drop in intensity was not heard as a drop in pitch, merely as a form of interference, as if the speaker's words were being carried away by the w...

Ngày tải lên: 09/03/2014, 01:20

... trajectories for a snippet of meeting Bmr024 are shown in Figure 1, in the interval beginning minutes into the meeting and ending 20 minutes later (The meeting is actually just over 50 minutes long but ... of one-participant speech and non-speech intervals, it does not in any way encode a norm of turn-taking, an inherently interac3 This pertains to the practicalities of re-invi...

Ngày tải lên: 17/03/2014, 00:20

... the wave dynamics in the near shore  area  and in the vicinity  of coastal structures.   It  has  been  found  that  the numerical model can  satisfactorily  simulate  the wave transformation,  ... to  wave breaking  on  a natural  beach  To  verify  the accuracy  of the numerical model on  the simulation of the wave transformation  on  a natural  beach,  existin...

Ngày tải lên: 28/03/2014, 15:20

... disembodying phase (i.e., the “upside-downing”) and a reembodying phase (the “upturning”) In the disembodying phase, the narrative situations and formal solutions used in the film aim to perturb the ... the eye and the body In the following, I will analyse a series of upside-down images in narrative cinema with the aim of demonstrating how in films the...

Ngày tải lên: 30/03/2014, 12:21

... membrane targeting and thiamine transport activity In a recent paper, we described the molecular consequences of a single aminoacid substitution identified in an Italian Rogers syndrome family harboring ... patients carrying this D93H mutant protein which apparently lost thiamine transport activity Aspartate 93 is conserved in all members of the solute carri...

Ngày tải lên: 30/03/2014, 20:20