Smoothed Particle Hydrodynamics Simulations of Water Flow in a 90° Pipe Bend

Sigalotti, Leonardo Di G.; Alvarado-Rodríguez, Carlos E.; Klapp, Jaime; María, José

doi:10.3390/w13081081

Cited by 6 publications

(5 citation statements)

References 31 publications

(36 reference statements)

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“…The Dualphysics code has been thoroughly validated against experimental data in pipe flow simulations using different geometries [62,64] and for many other benchmark test cases [57]. As a validation test, we further consider unsteady plane Poiseuille flow in a rectangular channel, while the convergence test is performed by comparing the REV-scale mainstream velocity profile at the outlet plane of the rectangular channel with that obtained at the pore scale for a uniform, non-staggered array of grains for φ = 0.3 at varying spatial resolution.…”

Section: Validation and Convergence Testingmentioning

confidence: 99%

Smoothed Particle Hydrodynamics Simulations of Porous Medium Flow Using Ergun’s Fixed-Bed Equation

Alvarado-Rodríguez

Díaz–Damacillo

Plaza

et al. 2023

Water

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A popular equation that is often employed to represent the relationship between the pressure loss and the fluid flow in fluidized or packed granular beds is the Ergun equation, which is an extension of Darcy’s law. In this paper, the method of Smoothed Particle Hydrodynamics (SPH) is used to numerically study the flow field across a rectangular channel partially filled with a porous layer both at the Representative Elementary Volume (REV) scale using the Ergun equation and at the pore scale. Since the flow field can be estimated at the REV scale with a much lower cost compared to the pore scale, it is important to evaluate how accurately the pore-scale results can be reproduced at the REV scale. The comparison between both scales is made in terms of the velocity profiles at the outlet of the rectangular channel and the pressure losses across the clear and porous zones for three different arrays of solid grains at the pore scale. The results show that minimum differences in the flow structure and velocity profiles between the REV and the pore scale always occur at intermediate values of the porosity (ϕ=0.44 and 0.55). As the porosity increases, the differences between the REV and the pore scale also increase. The details of the pressure losses are affected by the geometry of the porous medium. In particular, we find that the pressure profiles at the REV scale match those at the pore scale almost independently of the porosity only when the grains are uniformly distributed in a non-staggered square array.

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Section: Validation and Convergence Testingmentioning

confidence: 99%

Smoothed Particle Hydrodynamics Simulations of Porous Medium Flow Using Ergun’s Fixed-Bed Equation

Alvarado-Rodríguez

Díaz–Damacillo

Plaza

et al. 2023

Water

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“…Therefore, instead of measurement at a hydrodynamic region, observation at a fully-developed region is necessary to ensure measurement accuracy and stability. In addition, the availability of hydrodynamic properties is proven to be beneficial in obtaining piping stress distribution [5] and predicting the flow-accelerated corrosion region [6].…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of Hydrodynamics in Inline Mixers

Maulana Gilar Nugraha,

Daffa Dewa Saputra,

Khairullah Ilyas

et al. 2023

CFDL

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The utilization of inline mixers for continuous fluid mixing is a common practice in chemical industries. Information related to hydrodynamics condition in inline mixers is found to be limited while it is crucial for inline mixer type selection. Evaluation of hydrodynamic characteristics in several commercial inline mixers is analyzed in this study, including Y-type, T-type, elbow type, and internal injection mixer types. The analysis is conducted using computational fluid dynamics (CFD) for various Reynolds number conditions from 5,000 to 200,000. Mesh independence tests and model validation with experimental results are performed to ensure simulation accuracy. The CFD results showed that the Y-type mixer type provides the shortest distance i.e., about 12 times diameter. The internal injection type mixer has the most extended hydrodynamic region length to reach a fully-developed region for the same Reynolds number. The highest wall stress is indicated by the injection inline mixer type that located at the outer side wall of the injection pipe. The wall stress at that region is observed to be around twice as large compared to the other mixer type. Meanwhile, the mixer joint in the T-type and Y-type mixers were found to have a wall stress hotspot. Logarithmic correlation formulas were successfully formulated to correlate hydrodynamic region length and Reynolds number for all mixer types. The study results are essential in serving as the basis for inline mixer selection in the industrial sector

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“…The 90° pipe bend is often employed in pipeline systems to divert flow to specific places [1,2]. It is used in a variety of engineering applications, including the oil industry, transportation systems, water supply systems, air conditioning systems, and hydraulic systems [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

“…It is used in a variety of engineering applications, including the oil industry, transportation systems, water supply systems, air conditioning systems, and hydraulic systems [3][4][5]. As the fluids travel through the pipe bend, the turbulent flow of high-velocity fluids contacts the pipe bend's wall, and centrifugal force is created based on the bend curvature, resulting in the development of secondary flows [2]. Secondary flows may have led to pressure drop (or loss) [6,7].…”

Section: Introductionmentioning

confidence: 99%

Air Flow Analysis and Effect of Angle on Rotation Vane Blade Through 90-Degree by Computational Fluid Dynamic

Wan Alif Mustaqim Wan Hashim,

Nurul Farhanah Azman,

Mohamad Nor Musa

et al. 2022

ARFMTS

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The effects of different angles of rotation vane blades on the flow characteristics in a pipe bend were numerically examined in this work using computational fluid analysis (CFD). The model's geometry included a straight inlet pipe of 1 m length, a 90° pipe bend with a 0.1 m cross-section diameter, a straight outlet pipe of 1 m length, and the installation of rotating vane blades at 10° and 33° angles. The simulation's input parameters include fluid viscosity (0.000017894 kg/m.s), fluid density (1.225 kg/m3), and inlet fluid velocity (10, 14, 20, 24, 26, and 30 m/s). The simulations' output parameters include velocity and pressure measured at two points: section A-A (before the pipe bend) and section B-B (after pipe bend). The findings demonstrate that the velocity and pressure distribution is somewhat uneven at section B-B owing to the presence of the rotating vane. The most efficient rotation vane blade angle is 10° since it has the lowest velocity, static pressure, and pressure drop.

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Smoothed Particle Hydrodynamics Simulations of Water Flow in a 90° Pipe Bend

Cited by 6 publications

References 31 publications

Smoothed Particle Hydrodynamics Simulations of Porous Medium Flow Using Ergun’s Fixed-Bed Equation

Smoothed Particle Hydrodynamics Simulations of Porous Medium Flow Using Ergun’s Fixed-Bed Equation

Numerical Investigation of Hydrodynamics in Inline Mixers

Air Flow Analysis and Effect of Angle on Rotation Vane Blade Through 90-Degree by Computational Fluid Dynamic

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