Numerical and experimental analysis of vertically ascending swirling liquid film flow

Eidt, Henrique Krainer; Rodrigues, Carolina Cimarelli; Dunaiski, Rafael; Ofuchi, César Yutaka; Bertoldi, Dalton; Silva, Marco J. da; Neves, Flávio; Santos, Paulo Henrique Dias Dos; Morales, Rigoberto E. M.

doi:10.1016/j.petrol.2021.109030

Cited by 4 publications

(5 citation statements)

References 22 publications

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“…4), liquid superficial velocity is maintained at 2 m/s and the 0.5 m/s gas velocity is specified at the inlet. The non-dimensional film thickness is observed to be within the numerical and experimental datasets of Eidt et al (2021). The present study trend in the seasonal variation also matches with the literature data trend.…”

Section: Methodssupporting

confidence: 89%

“…The flow involves the tangential components of velocity with air and water phase and the outlet is maintained with the specified pressure. Validation of two phase flow is carried out with the experimental (wire mesh sensor) data and the numerical study of Eidt et al (2021). The errors between the present numerical output and experimental literature results are accounted, but found within the suitable agreement.…”

Section: Discussionmentioning

confidence: 88%

“…These planes are situated near inlet (5 mm away, plane A), middle of pipe (190 mm from inlet, plane B) and outlet (290 mm from inlet, plane C) respectively. Especially plane B is chosen at this location (190 mm from inlet) as per the literature (Eidt et al, 2021) where the results from wire-mesh experimental study are compared and validated in this study. Mesh independent studies are performed under coarse, intermediate and fine mesh categories as shown in Fig.…”

Section: Methodsmentioning

confidence: 99%

“…2. The parameter of choice for evaluation was the average liquid film thickness at the cross section 190 mm high from the bottom of the cyclonic chamber (Eidt et al, 2021). To make it easier to compare the data, the liquid film's average thickness was normalised using the cyclonic chamber radius (δ/R).…”

Section: Methodsmentioning

confidence: 99%

“…Dziubinski et al (2004) presented a map for the determination of flow pattern for two-phase flow of gas and non-Newtonian liquid in the vertical pipe. Eidt et al (2021) performed the wire-mesh experimental study and compared and validated a numerical model using a compressive discretization approach to capture the liquid-gas interface along with the Shear Stress Transport turbulence model to examine the dynamics of a liquid film flow. The stability and behaviour of the vertically rising liquid layer flow are influenced by the surface velocities of the liquid and gas.…”

Section: Introductionmentioning

confidence: 99%

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Numerical Investigations of a Swirling Two-Phase Air-Water Upward Flow in Straight and Convergent Vertical Pipe

Manimaran

Marikkannan

Karunamurthy

et al. 2023

Inter J Fluid Mech Res

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In this study, a numerical study is presented to analyze the flow parameters such as longitudinal and transverse velocities, hydrodynamic pressure, and volume fraction inside a vertical pipe. A vertical ascending swirl flow is established with the specified boundary conditions and compared between straight and convergent geometry pipes. Normalized film thickness is found to vary between 0.4 and 0.6, where the numerical output data from the present study resemble wire-mesh sensor data from literature. Convergent pipe flow includes the variation of hydrodynamic pressure thereby affecting the slug and bubble flow region. Longitudinal and transverse velocities are plotted against time and compared at the three inspection planes near the inlet, mid-portion, and outlet, respectively. In order to understand the effectiveness of rotational effect of gas and liquid phases, the vorticity components are studied. Parameters such as Q-criterion and vortex stretching term indicate the straining and shearing flow near the peripheral and core regions. The temporal volume fraction variation at the output section indicates the increase in the output liquid yield of convergent pipe outlet by 17%.

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Section: Methodssupporting

confidence: 89%

Section: Discussionmentioning

confidence: 88%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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