Pressure-Driven Gas Flows in Micro Channels with a Slip
Boundary: A Numerical Investigation

Abderrahmane, Aissa; Slimani, Mohamed El-Amine; Mebarek‐Oudina, Fateh; Fares, Roula; Zaim, Abdül Halim; Kolsi, Lioua; Sahnoun, M.; Ganaoui, M. E.

doi:10.32604/fdmp.2020.04073

Cited by 9 publications

(4 citation statements)

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“…They also considered the stable and periodic blood pressure at the entrance of the capillary network based on the immersion boundary method strategy, which had reference value for fluid dynamics and material processing. Aissa et al [26] conducted a numerical study of pressure-driven gas flow in microchannels with sliding boundaries, and they accurately predicted the pressure-driven flow in microchannels. Basri et al [27] studied the fluid-structure interaction in the complications of patients' specific aortic valve implantation based on fluid dynamics, which was of great significance for recirculation flow and thrombosis.…”

Section: Discussion Of Resultsmentioning

confidence: 99%

Analysis of the Thermal Performance of External Insulation in Prefabricated Buildings Using Computational Fluid Dynamics

Wang¹,

Wang²

2022

Fluid Dynamics &Amp; Materials Processing

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Section: Discussion Of Resultsmentioning

confidence: 99%

Analysis of the Thermal Performance of External Insulation in Prefabricated Buildings Using Computational Fluid Dynamics

Wang¹,

Wang²

2022

Fluid Dynamics &Amp; Materials Processing

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“…(2) integrate the pixels according to the corresponding lighting model to form the final image. Then, the data of landslide sediments obtained from the investigation [9] are calculated in the three-dimensional coordinate system. Thus, the gray information inside the structure is retained, which truly reflects the consistency between the virtual structure and reality.…”

Section: Construction Of a Three-dimensional Model Of Landslide Sedimentsmentioning

confidence: 99%

Application of the Navier-Stokes Equations to the Analysis of the Landslide Sediments Permeability and Related Seepage Effects

Song¹,

Liu²,

Wang³

2022

Fluid Dynamics &Amp; Materials Processing

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The purpose of the study is to implement a new model based on the Navier-Stokes equations for the characterization of landslide sediments interacting with a moving fluid. The model is implemented by combining Hypermesh, the LS-DYNA software and MATLAB. The results show that the main factors affecting the permeability of landslide sediments are the genetic mechanism, the structure and composition of materials, material lithology, and stress. The characteristics and mechanism of permeability changes are determined by adjusting the water levels of fluids. It is found that the permeability of landslide sediments increases at the front and decreases in the middle and at the rear of the considered domain. The magnitude of the internal flow for the whole system decreases first and then increases with a change in the water level during seepage.

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“…At present, the numerical simulation of slug flow in microchannels mainly adopts VOF method to study the influence of two-phase flow rate, physical parameters and contact angle on the flow process. It can not only obtain the basic parameters such as twophase flow pattern, slug flow length and generation period, but also deeply analyze the information such as velocity field and pressure field in the flow process, thus making up for the shortage of simple experimental research [43].…”

Section: Introductionmentioning

confidence: 99%

Study on effect of gas-liquid two phase physical feature on slug flow in microchannels

Wang

2023

Front. Phys.

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At present, there are relatively few studies on the slug flow generation mode obtained by exchanging gas-liquid two-phase inlets. In this study, an experimental system combining microfluidic devices and high-speed cameras was used to study the effects of gas-liquid two-phase flow rate, liquid physical parameters, etc., On the characteristic length, generation period and other generation characteristics of slug flow, and dimensionless analysis was conducted to investigate the main factors affecting the characteristic length of gas slug. Results show that 1) when the gas flow rate affects the aeroelastic generation characteristics, the aeroelastic characteristic length increases from 443 μm when the gas flow rate increases changes to 657 μm. The generation period decreases rapidly at first and then the change amplitude slows down. The maximum value of aeroelastic generation frequency is 217 s-1; 2) when studying the effect of different liquid flow rates, increasing the liquid flow rate, the characteristic length of the gas bomb gradually decreases, and the generation period of the gas bomb gradually increases. Aeroelastic characteristic length from 770 μm changes to 378 μm. The range of aeroelastic generation cycle is 4–13.4 ms, and the maximum value of aeroelastic generation frequency is 250 s-1; 3) there is a functional relationship between the ratio of aeroelastic characteristic length to channel size L/d and dimensionless gas-liquid flow ratio Q*, Reynolds number Re, Weber number We: L/d=3.677Q*0.58/Re0.11.

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Pressure-Driven Gas Flows in Micro Channels with a Slip Boundary: A Numerical Investigation

Cited by 9 publications

References 0 publications

Analysis of the Thermal Performance of External Insulation in Prefabricated Buildings Using Computational Fluid Dynamics

Analysis of the Thermal Performance of External Insulation in Prefabricated Buildings Using Computational Fluid Dynamics

Application of the Navier-Stokes Equations to the Analysis of the Landslide Sediments Permeability and Related Seepage Effects

Study on effect of gas-liquid two phase physical feature on slug flow in microchannels

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