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Isabelle Raspo, Evelyne Neau. An empirical correlation for the relative permittivity of liquids in a wide temperature range: application to the modeling of electrolyte systems with a GE/EoS approach.. Fluid Phase Equilibria, Elsevier, 2020, 506, pp.112371. ⟨10.1016/j.fluid.2019.112371⟩. ⟨hal-02325903⟩ Plus de détails...
Relative permittivity, also known as static dielectric constant, is a key property of solvents in electrolyte solutions. It strongly influences the solubility of solutes and, therefore, it can be used as a predictive tool in chemical engineering processes. Relative permittivity also plays an essential role in the modeling of phase equilibria of electrolyte systems, since it is involved in the Debye-Hückel model and in the Mean Spherical Approximation, commonly used to represent long-range interactions between ions. In this paper, we propose a new temperature-dependent correlation for the relative permittivity of liquid water, methanol and ethanol, valid in a wide temperature range, including very high temperatures. Comparison with other literature equations evidenced that the main interest of the proposed correlation is to allow satisfactory predictions of the relative permittivity, not only in the range of validity of other literature models, but also in the high temperature domain, including supercritical temperatures for water. The new correlation is then used with the NRTL-PRA EoS to predict vapor pressure of water with several salts, including single electrolytes and two-salts mixtures; it must be noted that the modeling presented in this work is relevant for any GE/EoS model, since in this case (binary interactions between water and ions being equal to zero), the excess Gibbs energy reduces to the Long-Range term derived from the Pitzer-Debye-Hückel model. A temperature-dependent correction of the solvent relative permittivity is proposed to account for its dependence on ion mole fraction in this Long-Range term. Results thus obtained show that this correction leads to an accurate prediction both: for vapor pressures of aqueous electrolyte solutions in a very wide temperature domain and for the modeling of vapor-liquid equilibria of methanol-water and ethanol-water mixtures with several salts.
Isabelle Raspo, Evelyne Neau. An empirical correlation for the relative permittivity of liquids in a wide temperature range: application to the modeling of electrolyte systems with a GE/EoS approach.. Fluid Phase Equilibria, Elsevier, 2020, 506, pp.112371. ⟨10.1016/j.fluid.2019.112371⟩. ⟨hal-02325903⟩
Hélène Cervo, Jean-Henry Ferrasse, Bernard Descales, Greet van Eetvelde. Blueprint: A methodology facilitating data exchanges to enhance the detection of industrial symbiosis opportunities – application to a refinery. Chemical Engineering Science, Elsevier, 2020, 211, pp.115254. ⟨10.1016/j.ces.2019.115254⟩. ⟨hal-02319708⟩ Plus de détails...
The European Union (EU) has put the concept of circularity at the heart of its strategy for transitioning towards a low-carbon economy and reducing the use of virgin resources. Concrete measures, such as clarifying rules on co-products or supporting innovative projects, have been taken in order to promote Industrial Symbiosis (IS)-turning one industry's co-product into another industry's raw material. However, one of the main barriers to the democratisation of IS remains the exchange of (confidential) data between industrial partners. Here, the concept of industrial sector blueprints is presented as a solution in order to overcome the challenge of sharing information across industrial sectors. A blueprint is constituted of a series of profiles providing insights on the key inputs and outputs of a given industry in terms of thermal and electrical energy, materials and services. A heuristic and comprehensive methodology is presented detailing a step-by-step approach for building the profiles and the type of data required. It is applied to a typical refinery demonstrating the efficiency of the method and showing how it can be used in an IS context.
Hélène Cervo, Jean-Henry Ferrasse, Bernard Descales, Greet van Eetvelde. Blueprint: A methodology facilitating data exchanges to enhance the detection of industrial symbiosis opportunities – application to a refinery. Chemical Engineering Science, Elsevier, 2020, 211, pp.115254. ⟨10.1016/j.ces.2019.115254⟩. ⟨hal-02319708⟩
C. Savaro, J.P. Bonnet, M.V. Johansson, P. Perrier, I. Graur, et al.. Gas permeability in rarefied flow conditions for characterization of mineral membrane support. European Journal of Mechanics - B/Fluids, Elsevier, 2020, 79, pp.44-53. ⟨10.1016/j.euromechflu.2019.07.005⟩. ⟨hal-02335012⟩ Plus de détails...
Gas Permeability Measurement Technique (GPMT) has the advantage of being a non-destructive method, which is efficient in characterizing filtration membranes. Ceramic filtration membranes consist of successive layers of micro (support) to nano size (skin) pores. When gas flows through such a small scale structure, the molecular mean free path becomes comparable to the pore size. The Slip flow model, validated to describe the gas transport properties under rarefied flow conditions in a microchannel, is extended to porous media. The porous structure is modeled as a cluster of several identical cylindrical channels.
C. Savaro, J.P. Bonnet, M.V. Johansson, P. Perrier, I. Graur, et al.. Gas permeability in rarefied flow conditions for characterization of mineral membrane support. European Journal of Mechanics - B/Fluids, Elsevier, 2020, 79, pp.44-53. ⟨10.1016/j.euromechflu.2019.07.005⟩. ⟨hal-02335012⟩
M. Tayyab, S. Zhao, Y. Feng, Pierre Boivin. Hybrid regularized Lattice-Boltzmann modelling of premixed and non-premixed combustion processes. Combustion and Flame, Elsevier, 2020, 211, pp.173-184. ⟨10.1016/j.combustflame.2019.09.029⟩. ⟨hal-02346556⟩ Plus de détails...
A Lattice-Boltzmann model for low-Mach reactive flows is presented, built upon our recently published model (Comb & Flame, 196, 2018). The approach is hybrid and couples a Lattice-Boltzmann solver for the resolution of mass and momentum conservation and a finite difference solver for the energy and species conservation. Having lifted the constant thermodynamic and transport properties assumptions, the model presented now fully accounts for the classical reactive flow thermodynamic closure: each component is assigned NASA coefficients for calculating its thermodynamic properties. A temperature-dependent viscosity is considered, from which are deduced thermo-diffusive properties via specification of Prandtl and component-specific Schmidt numbers. Another major improvement from our previous contribution is the derivation of an advanced collision kernel compatible of multi-component reactive flows stable in high shear flows. Validation is carried out first on premixed configurations, through simulation of the planar freely propagating flame, the growth of the associated Darrieus-Landau instability and three regimes of flame-vortex interaction. A double shear layer test case including a flow-stabilized diffusion flame is then presented and results are compared with DNS simulations, showing excellent agreement.
M. Tayyab, S. Zhao, Y. Feng, Pierre Boivin. Hybrid regularized Lattice-Boltzmann modelling of premixed and non-premixed combustion processes. Combustion and Flame, Elsevier, 2020, 211, pp.173-184. ⟨10.1016/j.combustflame.2019.09.029⟩. ⟨hal-02346556⟩
Hélène Cervo, Stéphane Ogé, Amtul Samie Maqbool, Francisco Mendez Alva, Lindsay Lessard, et al.. A Case Study of Industrial Symbiosis in the Humber Region Using the EPOS Methodology. Sustainability, MDPI, 2019, 11 (24), pp.6940. ⟨10.3390/su11246940⟩. ⟨hal-02395672⟩ Plus de détails...
For the last 20 years, the field of industrial symbiosis (IS) has raised interest among academics and industries. IS consists of dissimilar entities sharing and valorising underutilised resources such as materials, energy, information, services, or technologies in the view of increasing the industrial system's circularity. Despite the benefits brought by IS, though, barriers hindering the full dissemination of IS remain. This paper presents a methodology developed in the framework of the H2020 European project EPOS that aims at removing some of the obstacles to the implementation of IS. The method follows a multidisciplinary approach that intents to trigger the interest of industry decision-makers and initiate efforts to optimise the use of energy and material resources through symbiosis. It is applied to an industrial cluster located in the Humber region of UK. The case study shows how the approach helped to identify several IS opportunities, how one particular high-potential symbiosis was further assessed, and how it led to the creation of a business case. It was estimated that the identified symbiosis could bring substantial economic (+2000 k€ pa), environmental (−4000 t of CO 2 eq. pa) and social (+7 years of healthy life) gains to the region.
Hélène Cervo, Stéphane Ogé, Amtul Samie Maqbool, Francisco Mendez Alva, Lindsay Lessard, et al.. A Case Study of Industrial Symbiosis in the Humber Region Using the EPOS Methodology. Sustainability, MDPI, 2019, 11 (24), pp.6940. ⟨10.3390/su11246940⟩. ⟨hal-02395672⟩
Nicolas Roche, Anestis Antoniadis, David Hess, Pei Zhi Li, Eric Kelkel, et al.. Are there specific clinical characteristics associated with physician’s treatment choices in COPD?. Respiratory Research, BioMed Central, 2019, 20 (1), ⟨10.1186/s12931-019-1156-1⟩. ⟨hal-02328696⟩ Plus de détails...
Nicolas Roche, Anestis Antoniadis, David Hess, Pei Zhi Li, Eric Kelkel, et al.. Are there specific clinical characteristics associated with physician’s treatment choices in COPD?. Respiratory Research, BioMed Central, 2019, 20 (1), ⟨10.1186/s12931-019-1156-1⟩. ⟨hal-02328696⟩
Siengdy Tann, Xi Deng, Yuya Shimizu, R. Loubère, Feng Xiao. Solution Property Preserving Reconstruction for Finite Volume Scheme: a BVD+MOOD framework. International Journal for Numerical Methods in Fluids, Wiley, In press, ⟨10.1002/fld.4798⟩. ⟨hal-02397156⟩ Plus de détails...
The purpose of this work is to build a general framework to reconstruct the underlying fields within a Finite Volume (FV) scheme solving a hyperbolic system of PDEs (Partial Differential Equations). In an FV context, the data are piece-wise constants per computational cell and the physical fields are reconstructed taking into account neighbor cell values. These reconstructions are further used to evaluate the physical states usually used to feed a Riemann solver which computes the associated numerical fluxes. The physical field reconstructions must obey some properties linked to the system of PDEs such as the positivity, but also some numerically based ones, like an essentially non-oscillatory behaviour. Moreover, the reconstructions should be high accurate for smooth flows and robust/stable for discontinuous solutions. To ensure a Solution Property Preserving Reconstruction, we introduce a methodology to blend high/low order polynomials and hyperbolic tangent reconstructions. A Boundary Variation Diminishing (BVD) algorithm is employed to select the best reconstruction in each cell. An a posteriori MOOD detection procedure is employed to ensure the positivity by re-computing the rare problematic cells using a robust first-order FV scheme. We illustrate the performance of the proposed scheme via the numerical simulations for some benchmark tests which involve vacuum or near vacuum states, strong discontinuities and also smooth flows. The proposed scheme maintains high accuracy on smooth profile, preserves the positivity and can eliminate the oscillations in the vicinity of discontinuities while maintaining sharper discontinuity with superior solution quality compared to classical high accurate FV schemes.
Siengdy Tann, Xi Deng, Yuya Shimizu, R. Loubère, Feng Xiao. Solution Property Preserving Reconstruction for Finite Volume Scheme: a BVD+MOOD framework. International Journal for Numerical Methods in Fluids, Wiley, In press, ⟨10.1002/fld.4798⟩. ⟨hal-02397156⟩
Journal: International Journal for Numerical Methods in Fluids
Martin Victor Johansson, Fabrice Testa, Pierre Perrier, Jérôme Vicente, Jean Philippe Bonnet, et al.. Determination of an effective pore dimension for microporous media. International Journal of Heat and Mass Transfer, Elsevier, 2019, 142, pp.118412. ⟨10.1016/j.ijheatmasstransfer.2019.07.062⟩. ⟨hal-02196396⟩ Plus de détails...
The transient method of the mass flow rate and permeability measurements through a microporous media, developed previously, is used here to extract different characteristics of the media. By implementing the model of porous media as a bundle of capillaries the effective pore dimension is extracted from the measurements, and its physical interpretation is given. This methodology shows promising results to be used as a non-destructive method of micro-and-nanoporous media analysis. The permeability is also extracted directly from the measurements of the pressure variation in time. By using additional information about the sample porosity, the number of capillaries, the tortuosity and the internal surface of the sample are calculated. The extracted values are very close to that obtained by the mercury porosimetry and by microtomography.
Martin Victor Johansson, Fabrice Testa, Pierre Perrier, Jérôme Vicente, Jean Philippe Bonnet, et al.. Determination of an effective pore dimension for microporous media. International Journal of Heat and Mass Transfer, Elsevier, 2019, 142, pp.118412. ⟨10.1016/j.ijheatmasstransfer.2019.07.062⟩. ⟨hal-02196396⟩
Journal: International Journal of Heat and Mass Transfer
Simon Gsell, Umberto D'ortona, Julien Favier. Explicit and viscosity-independent immersed-boundary scheme for the lattice Boltzmann method. Physical Review E , American Physical Society (APS), 2019, 100 (3), ⟨10.1103/PhysRevE.100.033306⟩. ⟨hal-02339475⟩ Plus de détails...
Viscosity independence of lattice-Boltzmann methods is a crucial issue to ensure the physical relevancy of the predicted macroscopic flows over large ranges of physical parameters. The immersed-boundary (IB) method, a powerful tool that allows one to immerse arbitrary-shaped, moving, and deformable bodies in the flow, suffers from a boundary-slip error that increases as a function of the fluid viscosity, substantially limiting its range of application. In addition, low fluid viscosities may result in spurious oscillations of the macroscopic quantities in the vicinity of the immersed boundary. In this work, it is shown mathematically that the standard IB method is indeed not able to reproduce the scaling properties of the macroscopic solution, leading to a viscosity-related error on the computed IB force. The analysis allows us to propose a simple correction of the IB scheme that is local, straightforward and does not involve additional computational time. The derived method is implemented in a two-relaxation-time D2Q9 lattice-Boltzmann solver, applied to several physical configurations, namely, the Poiseuille flow, the flow around a cylinder towed in still fluid, and the flow around a cylinder oscillating in still fluid, and compared to a noncorrected immersed-boundary method. The proposed correction leads to a major improvement of the viscosity independence of the solver over a wide range of relaxation times (from 0.5001 to 50), including the correction of the boundary-slip error and the suppression of the spurious oscillations. This improvement may considerably extend the range of application of the IB lattice-Boltzmann method, in particular providing a robust tool for the numerical analysis of physical problems involving fluids of varying viscosity interacting with solid geometries.
Simon Gsell, Umberto D'ortona, Julien Favier. Explicit and viscosity-independent immersed-boundary scheme for the lattice Boltzmann method. Physical Review E , American Physical Society (APS), 2019, 100 (3), ⟨10.1103/PhysRevE.100.033306⟩. ⟨hal-02339475⟩
Xueru Yan, Stéphane Anguille, Marc Bendahan, Philippe Moulin. Ionic liquids combined with membrane separation processes: A review. Separation and Purification Technology, Elsevier, 2019, 222, pp.230-253. ⟨10.1016/j.seppur.2019.03.103⟩. ⟨hal-02119807⟩ Plus de détails...
