Multiphase Flows and Heat & Mass Transfer

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Fluid Science and Technology".

Deadline for manuscript submissions: 20 August 2024 | Viewed by 762

Special Issue Editors


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Guest Editor
Institute of Extreme Mechanics and School of Aeronautics, Northwestern Polytechnical University, Xi’an 710072, China
Interests: evaporation of liquid and colloidal suspension; multiphase flows in porous media; phase change and heat & mass transfer; lattice Boltzmann method

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Guest Editor
College of Petroleum Engineering, China University of Petroleum-Beijing, Beijing 102249, China
Interests: lattice Boltzmann method; pore network model; unconventional resources; digital rock technology; nano-/micro-scale fluid flow; multiphase flow in porous media

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Guest Editor
School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China
Interests: porous media heat and mass transfer and reaction; micro/nanoscale heat and mass transfer; porous media two-phase flow; hydrogen fuel cell (new energy); carbon dioxide storage (serving dual carbon goals); thermochemical heat storage (energy storage); new heat exchanger design (energy saving)
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Special Issue Information

Dear Colleagues,

Both multiphase flows and heat & mass transfer are ubiquitously observed in nature, daily life and engineering fields, such as rain droplet impact, water boiling, oil recovery, cooling of integrated chips, etc. It is a complex process coupled with multiple physical phenomena. Numerous studies have been conducted to improve our understanding of this area by means of theoretical, numerical and experimental approaches. This Special Issue summarizes the recent progresses on this topic. The interested research areas include but are not limited to:

  • Droplet impact on liquid and solid surface with different microstructures;
  • Liquid boiling of different regimes, with different microstructures;
  • Evaporation of liquid under isothermal/non-isothermal conditions;
  • Evaporation of colloidal suspension and nanoparticle transport;
  • Vapor condensation of different types;
  • Multiphase flows and phase change in porous media;
  • Enhanced heat & mass transfer;
  • Various applications in oil recovery, chip cooling, microfluidics, fuel cells, carbon capture, utilization and storage, etc.

Dr. Feifei Qin
Dr. Jianlin Zhao
Prof. Dr. Li Chen
Guest Editors

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Keywords

  • multiphase flows
  • heat & mass transfer
  • phase change

Published Papers (1 paper)

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Research

10 pages, 2696 KiB  
Article
Dynamics of Coalesced Droplet Jumping on Superhydrophobic Surface with Asymmetrically Wettable Ridge
by Sungchan Yun
Appl. Sci. 2024, 14(9), 3584; https://doi.org/10.3390/app14093584 - 24 Apr 2024
Viewed by 447
Abstract
Spontaneous detachment from superhydrophobic surfaces can be induced by the coalescence of two or more adjacent droplets. The phenomena have provided implications for the self-removal of droplets in the fields of self-cleaning, anti-icing, and heat transfer. However, many studies focus mainly on the [...] Read more.
Spontaneous detachment from superhydrophobic surfaces can be induced by the coalescence of two or more adjacent droplets. The phenomena have provided implications for the self-removal of droplets in the fields of self-cleaning, anti-icing, and heat transfer. However, many studies focus mainly on the theoretical jumping direction perpendicular to the substrate, although the velocity in the horizontal direction must be involved in practical applications due to various scenarios. This study analyzes numerically the effect of the distribution in ridge structure’s wettability on the performance of coalesced droplet jumping. The jumping dynamics are discussed for varying contact angle ratios and the aspect ratios of the ridge, which are the initial values for the current model. We obtain the height of the jumping and the offset distance in the horizontal direction under the several initial values. In addition, the characteristics of the asymmetric behavior are discussed based on the temporal evolution of the average velocities of the jumping droplets for each direction. Numerical results show that the horizontal offset distance is significantly pronounced at both the high asymmetry in wettability and the high aspect ratio of the ridge geometry. The phenomenon occurs when the droplet detaches from the ridge surface in the retraction process. We determine the role of the distribution within the ridge structure on its wettability, as well as the role of the aspect ratios of the ridge in facilitating the efficient transport of droplets. Full article
(This article belongs to the Special Issue Multiphase Flows and Heat & Mass Transfer)
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