Showing papers by "Daniel Tondeur published in 2011"
TL;DR: In this article, the steady-state flow-rates in each branch of the ladder are in the form of polynomials of dimensionless resistance ratios, which obey simple and general recurrence relations, which allow any size of ladder to be solved.
33 citations
TL;DR: In this article, the authors consider the steady-state flow-rates in the branches of 2D rectangular lattice networks with a single inlet and a single outlet, and show how to organize the flow resistances on the periphery of the lattice so as to achieve flow uniformity in all inside channels.
32 citations
TL;DR: In this paper, evaporation and separation of a binary mixture of ethanol and n-propanol in a microstructured falling film contactor made from two electrically heated vertical plates grooved with straight microchannels and forming the sides of a common gas chamber were investigated.
13 citations
TL;DR: In this article, the flow and pressure distributions of simple 2D grids of intersecting tubes or channels are investigated from the point of view of the fluid distribution and hydraulic characteristics in slow laminar flow.
10 citations
TL;DR: In this paper, the authors introduce a new concept of intensification of mixing and/or transfer, based on the "interlacing" of the flow channels of two or more distinct arborescent (dendritic) networks, thus creating a new method for multi-vascularization of a specific space.
9 citations
TL;DR: In this article, a new mass transfer model based on the Maxwell-Stefan theory was proposed to represent adsorbed phase multicomponent diffusion at high-adsorbent loading.
Abstract: This work provides a new mass transfer model based on the Maxwell–Stefan theory, especially adapted to represent adsorbed phase multicomponent diffusion at high-adsorbent loading. In our model—contrarily to the well-known model developed by Krishna et al. (Chem Eng Sci. 1990;45:7:1779–1791; Gas Sep Purif. 1993;7:91–104; J Phys Chem B. 2005;109:6386–6396)—the hypothesis that the micropores are saturated does not imply a dependency between the adsorbed phase diffusion coefficients. Experimental liquid phase breakthrough curves of 2-methylpentane (2MP), 3-methylpentane (3MP), 2,3-dimethylbutane (23DMB), and 2,2-dimethylbutane (22DMB) were measured at 458 K in silicalite. The self-diffusion coefficients and Langmuir parameters of the different species were determined using binary exchange breakthrough curves. The Maxwell–Stefan diffusion coefficients obtained for the different isomers are in the order D3MP,nc+1 > D2MP,nc+1 ≫ D23DMB,nc+1, and vary between 4 × 10−15 m2 s−1 for 3MP to 6 × 10−16 m2 s−1 for 23DMB. The 22DMB diffusion coefficient is so low that it could not be estimated (the quantity of 22DMB entering silicalite during the experiment is not significant). The model was then validated by comparing experimental breakthrough curves at different feed concentrations and simulations using the independently estimated parameters. Even though the diffusion coefficients of the different isomers vary by one order of magnitude, the agreement between simulated and experimental curves is very satisfactory, showing the good predictive power of our model. © 2010 American Institute of Chemical Engineers AIChE J, 2011
8 citations