Thermal Conductivity of Suspension of Aggregating Nanometric Rods

Ammar, Amine; Chinesta, Francisco; Heyd, Rodolphe

doi:10.3390/e19010019

Cited by 6 publications

(1 citation statement)

References 32 publications

(37 reference statements)

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“…In order to capture the very fine space scales, a proper generalized decomposition (PGD) solver was employed, making use of a space separated representation as deeply discussed in [2,21].…”

Section: Interface Of Rough Surfacesmentioning

confidence: 99%

On the interfacial thermal properties of two rough surfaces in contact in preimpregnated composites consolidation

Saoudi¹,

León²,

Grégoire³

et al. 2017

Surf. Topogr.: Metrol. Prop.

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Composite manufacturing processes usually proceed from preimpregnated preforms that are consolidated by simultaneously applying heat and pressure ensuring a perfect contact compulsory for making possible molecular diffusion. However, fine representations and descriptions of surfaces remain challenging because the necessity of representing their finest scale details. Even if in reality two rough surfaces are put in contact, heated and then squeezed, the associated numerical simulation becomes in most cases extremely expensive. Thus, a simplifying hypothesis has been widely considered, one relating to the consideration of a single surface resulting from the sum of both real surfaces and then its compression from a rigid flat plate. This work aims at elucidating the equivalence of both process representations by analyzing the thermal resistance of different synthetic rough surfaces created from different growing dynamics.

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“…In order to capture the very fine space scales, a proper generalized decomposition (PGD) solver was employed, making use of a space separated representation as deeply discussed in [2,21].…”

Section: Interface Of Rough Surfacesmentioning

confidence: 99%

On the interfacial thermal properties of two rough surfaces in contact in preimpregnated composites consolidation

Saoudi¹,

León²,

Grégoire³

et al. 2017

Surf. Topogr.: Metrol. Prop.

Self Cite

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Thermal conductivity of emulsion with anisotropic microstructure induced by external field

Zakinyan

Arefyev

2020

Colloid Polym Sci

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On the use of CFD to obtain head loss coefficients in hydraulic systems and its application to liquid metal MHD flows in nuclear fusion reactor blankets

Suarez

Valls

Batet

2021

Plasma Phys. Control. Fusion

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When an incompressible fluid flows through a contraction in a conduit, the increase in the kinetic energy of the fluid is accompanied by a pressure drop. This pressure drop is not to be assimilated with head loss. If downstream the fluid encounters an expansion in the conduit, the energy conversion will take place in the opposite way. Therefore, when a geometrical singularity is analysed to assess its contribution to the pumping power requirements of the system, the whole mechanical energy transfer of the fluid in the singularity has to be taken into account, and not only the pressure variation. The first part of the present work establishes a method to obtain head loss coefficients in geometric singularities of hydrodynamic circuits using the results of computational fluid dynamics (CFD) calculations. These coefficients are of interest when modelling the whole system with a 1D system code, for instance. In the second part of the article, the method is applied to a more complex case, involving magnetohydrodynamic (MHD) phenomena. Thus, a prototypical channel singularity in a liquid metal circuit subject to a magnetic field is analysed. The layout is representative of a case that could be found in the liquid metal blankets to be used in nuclear fusion reactors. The influence of the MHD phenomena is studied and the differences with a purely hydrodynamic case are pointed out. The MHD analyses have been done in the Marconi High Performance Computing facility, using 48 cores, each case needing between one and two weeks to complete.

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Thermal Conductivity of Suspension of Aggregating Nanometric Rods

Cited by 6 publications

References 32 publications

On the interfacial thermal properties of two rough surfaces in contact in preimpregnated composites consolidation

On the interfacial thermal properties of two rough surfaces in contact in preimpregnated composites consolidation

Thermal conductivity of emulsion with anisotropic microstructure induced by external field

On the use of CFD to obtain head loss coefficients in hydraulic systems and its application to liquid metal MHD flows in nuclear fusion reactor blankets

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