Elongational flow of arrested complex fluid under the suppression of osmotic effective diffusion by surrounding flow of miscible solvent DOI
Ashhar Hussain, Gyeong Min Choi,

Hyunsoo Kim

et al.

Physics of Fluids, Journal Year: 2024, Volume and Issue: 36(12)

Published: Dec. 1, 2024

Nonequilibrium interface (NI) of miscible fluids has long been great interest; however, the acting effective interfacial tension and deformation rate suspended phase in a steady immiscible state (SIS) have yet delineated. We investigate diffusion complex with surrounding fluid rectangular microchannel. show here that NI acts as moving osmotic membrane maintains stable two-phase flow at faster than proportional to pressure fluid. report for first time within exhibits wet capillary thinning (WCT) behavior SIS. demonstrate either caused by Korteweg stress or elongational viscosity is measurable from WCT behavior, it was shown be applicable polymer solutions, animal blood, even pure water. Our findings provide new insight into managing stream fluids. The technique enables precise measurement small amount fluid, about size drop without contact gas phase, providing safe method toxic, reactive liquid, infected biofluids.

Language: Английский

Forcing mass transfer approach in multicomponent miscible mixtures using the lattice Boltzmann method DOI
Ramon G. C. Lourenço,

Pedro H. Constantino,

Frederico W. Tavares

et al.

Chemical Engineering Science, Journal Year: 2025, Volume and Issue: unknown, P. 121566 - 121566

Published: March 1, 2025

Language: Английский

Citations

0
Pore structure design and mass transfer optimization of resin catalysts based on lattice Boltzmann method for n-butyl levulinate synthesis DOI

Pengyu Xiong,

Yong Shi, Chen Yang

et al.

Chemical Engineering Science, Journal Year: 2025, Volume and Issue: unknown, P. 121788 - 121788

Published: May 1, 2025

Language: Английский

Citations

0
Experimental study of thermoconcentration convection in air–water and air–undecane mixtures DOI
Sergey A. Somov, А. С. Иванов

Physics of Fluids, Journal Year: 2024, Volume and Issue: 36(10)

Published: Oct. 1, 2024

A quantitative experimental comparison was conducted between thermal convection in dry air and thermoconcentration two gas mixtures: air–water vapor air–undecane vapor, within the temperature range of 0–80 °C at normal atmospheric pressure. Convection these mixtures is driven by concentration gradients water (or undecane) air. The stationary accompanied continuous phase transitions fluids. results experiments are represented terms Nusselt number Nu effective Rayleigh RaE, which sum RaT RaC numbers. Quantitative laboratory measurements were performed using thermocouple method supplemented with qualitative data from visual monitoring transparent fluid flows holographic interferometry. cubic quadratic dependencies RaCRaT−1 determined experimentally for moist mixture, respectively. significant role moisture established. Neglecting effects 25 ordinary instead actual RaE would result an error exceeding 30%. At 38 °C, this increase to nearly 100%. around 80 becomes almost entirely concentration-driven, as high molecular disordered motion suppressed ordered convective generated evaporation condensation on opposite heat exchangers cell.

Language: Английский

Citations

0
Lattice Boltzmann modeling for enhanced membrane separation of geothermal energy utilization DOI

Youfei Tang,

Zongliang Qiao, Yue Cao

et al.

Applied Thermal Engineering, Journal Year: 2024, Volume and Issue: unknown, P. 124912 - 124912

Published: Nov. 1, 2024

Language: Английский

Citations

0
Particle dynamics at fluid interface by pseudo-potential lattice Boltzmann method coupled with smoothed profile method DOI
Wei Hu, Tao Lin, Caihao Yang

et al.

Physics of Fluids, Journal Year: 2024, Volume and Issue: 36(12)

Published: Dec. 1, 2024

Fluid–solid coupling widely exists in some natural phenomena and industrial applications. However, it is still an important challenge to correctly capture the transient changes of particles at fluid interface. We develop a lattice Boltzmann model for particle dynamics interface, which adopts strategy by combining pseudo-force (Shan-Chen) multiphase multicomponent smoothed profile method. In strategy, novel extrapolation boundary condition applied fluid–solid repulsive force (bounce-back force) between solid node introduced coexistence region (at interface), form interaction particle. Thanks proposed method, drag on can be described, especially situations high volume fractions. It found that wetting angle θ interface surface basically linear with coefficient difference ΔG. What more, further validate reliability our model, we performed two groups simulations different Bos = 0.51 (0.84) 0.83 (1.35), they are single trapped under gravity deformed falling impacts presence gravity, respectively, good agreements simulation results experimental ones description relationship inertial interfacial tension obtained, their correlations both close 1, proves model.

Language: Английский

Citations

0
Numerical Simulation of First-Order Surface Reaction in Open Cavity Using Lattice Boltzmann Method DOI Creative Commons
Cristian Yoel Quintero-Castañeda, María Margarita Sierra-Carrillo,

Arturo I. Villegas-Andrade

et al.

Fluids, Journal Year: 2024, Volume and Issue: 10(1), P. 7 - 7

Published: Dec. 30, 2024

The lattice Boltzmann method (LBM) is a finite element and volume for studying the reaction rate, mass diffusion concentration of species. We are used LBM to investigate effect Damköhler number (Da) Reynolds (Re) on laminar flow in channel with an open square cavity reactive bottom wall two dimensions first-order chemical reaction. reactant A transported through cavity, where it undergoes surface, resulting synthesis product B. Da < 1 rate negligible all investigated Re values; generation B slower because momentum diffusivity velocity inside cavity. For = 5 ≤ 100, reaches maximum absorbed almost entirely In our simulations, we observed that values > surface instantaneous.

Language: Английский

Citations

0
Elongational flow of arrested complex fluid under the suppression of osmotic effective diffusion by surrounding flow of miscible solvent DOI
Ashhar Hussain, Gyeong Min Choi,

Hyunsoo Kim

et al.

Physics of Fluids, Journal Year: 2024, Volume and Issue: 36(12)

Published: Dec. 1, 2024

Nonequilibrium interface (NI) of miscible fluids has long been great interest; however, the acting effective interfacial tension and deformation rate suspended phase in a steady immiscible state (SIS) have yet delineated. We investigate diffusion complex with surrounding fluid rectangular microchannel. show here that NI acts as moving osmotic membrane maintains stable two-phase flow at faster than proportional to pressure fluid. report for first time within exhibits wet capillary thinning (WCT) behavior SIS. demonstrate either caused by Korteweg stress or elongational viscosity is measurable from WCT behavior, it was shown be applicable polymer solutions, animal blood, even pure water. Our findings provide new insight into managing stream fluids. The technique enables precise measurement small amount fluid, about size drop without contact gas phase, providing safe method toxic, reactive liquid, infected biofluids.

Language: Английский

Citations

0