CMMSE: a reduced percolation model for espresso coffee

Giacomini, Josephin; Maponi, Pierluigi; Perticarini, Alessia

doi:10.1007/s10910-022-01428-6

Cited by 2 publications

(1 citation statement)

References 16 publications

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“…A similar percolation model is used in [14] to predict the EY and the proposed numerical approach ensures the positivity of the concentrations and the mass conservation. The same solving strategy is also adopted in [15] where the percolation model is generalised for the prediction of an arbitrary number of chemical compounds. All these one-dimensional percolation models have the advantage to be simple computational tools to predict the global water flow and extraction dynamics, considering quantities averaged over the whole domain or over some domain sections [16].…”

Section: Introductionmentioning

confidence: 99%

Computer Percolation Models for Espresso Coffee: State of the Art, Results and Future Perspectives

et al. 2023

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Coffee is one of the most consumed beverages in the world. This has two main consequences: a high level of competitiveness among the players operating in the sector and an increasing pressure from the supply chain on the environment. These two aspects have to be supported by scientific research to foster innovation and reduce the negative impact of the coffee market on the environment. In this paper, we describe a mathematical model for espresso coffee extraction that is able to predict the chemical characterisation of the coffee in the cup. Such a model has been tested through a wide campaign of chemical laboratory analyses on espresso coffee samples extracted under different conditions. The results of such laboratory analyses are compared with the simulation results obtained using the aforementioned model. The comparison shows a close agreement between the real and in silico extractions, revealing that the model is a very promising scientific tool to take on the challenges of the coffee market.

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Section: Introductionmentioning

confidence: 99%

Computer Percolation Models for Espresso Coffee: State of the Art, Results and Future Perspectives

et al. 2023

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Computing a Class of Blow-up Solutions for the Navier-Stokes Equations

Boldrighini,

Frigio,

Maponi

et al. 2024

Wseas Transactions on Fluid Mechanics

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The three-dimensional incompressible Navier-Stokes equations play a fundamental role in a large number of applications to fluid motions, and a large amount of theoretical and experimental studies were devoted to it. Our work is in the context of the Global Regularity Problem, i.e., whether smooth solutions in the whole space R3 can become singular (“blow-up”) in a finite time. The problem is still open and also has practical importance, as the singular solutions would describe new phenomena. Our work is mainly inspired by a paper of Li and Sinai, who proved the existence of a blow-up for a class of smooth complex initial data. We present a study by computer simulations of a larger class of complex solutions and also of a related class of real solutions, which is a natural candidate for evidence of a blow-up. The numerical results show interesting features of the solutions near the blow-up time. They also show some remarkable properties for the real flows, such as a sharp increase of the total enstrophy and a concentration of high values of velocities and vorticity in small regions.

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CMMSE: a reduced percolation model for espresso coffee

Cited by 2 publications

References 16 publications

Computer Percolation Models for Espresso Coffee: State of the Art, Results and Future Perspectives

Computer Percolation Models for Espresso Coffee: State of the Art, Results and Future Perspectives

Computing a Class of Blow-up Solutions for the Navier-Stokes Equations

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