Unraveling the fundamentals of transport across the vapor-liquid interface

Informazioni relative al progetto

InterLab

ID dell’accordo di sovvenzione: 101115669

DOI

10.3030/101115669

Data della firma CE 4 Ottobre 2023

Data di avvio 1 Gennaio 2024

Data di completamento 31 Dicembre 2028

Finanziato da

• European Research Council (ERC)

Costo totale

€ 1 499 098,00

Contributo UE

€ 1 499 098,00

Coordinato da

NORGES TEKNISK-NATURVITENSKAPELIGE UNIVERSITET NTNU
Norway

Periodic Reporting for period 1 - InterLab (Unraveling the fundamentals of transport across the vapor-liquid interface)

Periodo di rendicontazione: 2024-01-01 al 2026-06-30

Sintesi del contesto e degli obiettivi generali del progetto

Transport of heat and mass across vapor-liquid interfaces is crucial in many examples of practical relevance such as the growth of rain droplet, the efficiency of distillation columns and the evaporation of oceans.
Experiments have documented that there can be a large temperature-jump across vapor-liquid interfaces, representing a resistance to heat and mass transport. There are no predictive models available that can reproduce experimental results within an acceptable accuracy.
This motivates the primary objectives of this project: Develop theory and methods to reproduce evaporation rates from steady-state experiments with water and octane within an accuracy of 10%, where pressure is measured to an accuracy of ±0.3 Pa (water) and ±2.7 Pa (octane), and the heat flux is extracted from the temperature measurements to an accuracy of ±6%
The practical impact if the project succeeds is a validated, predictive theory that can represent heat and mass transport across vapor-liquid interfaces within a high accuracy, that has been validated with experiments.

Lavoro eseguito dall’inizio del progetto fino alla fine del periodo coperto dalla relazione e principali risultati finora ottenuti

Here are main achievements from this project that have been or will shortly be published in the open literature:

- The viscosity, thermal conductivity and diffusion coefficients of the Lennard-Jones fluid have been comprehensively characterized and represented by use of many theoretical and semi-empirical models.
- New fundamental transfer lengths have been derived for Revised Enskog Theory, enabling prediction of transport properties also at higher, liquid-like densities based only on molecular information.
- A new methodology to extrapolate into the metastable and unstable domains of the phase diagram and map interfacial properties have been developed.
- Density functional theory for fluids have also been evaluated in vicinity of solid surfaces.
- The intrinsic surface methodology has been used to study interfaces and their resistances both at and beyond equilibrium.

Progressi oltre lo stato dell’arte e potenziale impatto previsto (incluso l’impatto socioeconomico e le implicazioni sociali più ampie del progetto fino ad ora)

The extension of revised enskog theory to higher densities represents a significant step beyond the present state of the art. We are also currently in the process of unravelling the fundamental mechanism of transport across vapor-liquid interfaces, and more information with details will be submitted to a journal in the near future.