Study of the effect of particles on the kinetic parameters of a turbulent two-phase flow

Bayoudh, Mariem; Touati, H.; N'Ticha, Hmaied Ben

doi:10.1016/j.egypro.2019.04.022

Cited by 3 publications

(2 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A numerical study of the dynamic behaviour of the flow of the two phases is proposed, and the influence of the loading rate and size of particles on gas flow and turbulence is analyzed. Bayoudh et al [ 14 ] used the Euler–Euler method to model the solid phase and the k‐ε model to model the turbulent flow, and studied the modulation of the flow structure of solid particles of different sizes and particle loading rates and the turbulence characteristics of the gas flow. However, it is difficult to obtain the kinetic energy dissipation rate of fluids, and various models and numerical works have also reported the dependence of the dissipation rate on kinetic energy, which is often attributed to the intermittency and non‐independence of small‐scale dynamics versus large‐scale dynamics.…”

Section: Introductionmentioning

confidence: 99%

Effects of particle concentration and size on the dissipation rate and turbulent kinetic energy of oil

Cheng

Liu

2023

Can J Chem Eng

View full text Add to dashboard Cite

The presence of particles in oil can change the quasi‐sequence structure of the turbulent flow of the oil, and it is extremely important to explore the turbulent energy dissipation rate of the particulate‐containing oil and ensure the safe and stable operation of the oil‐using equipment. Thus, the flow field of the oil containing particles in the pipeline was experimentally studied by a particle image velocimeter (PIV); the turbulent kinetic energy of the oil was calculated using the transient velocity vector field measured by the PIV; and the dissipation rate distribution was calculated using the large eddy PIV method. The influence of different particle sizes and particle concentrations on the normal distribution of the turbulent kinetic energy and dissipation rate was analyzed. The results show that the distribution of the turbulent kinetic energy in the normal direction is non‐unidirectional and in a parabolic shape. The 25 μm particle size has a great influence on the turbulence kinetic energy and the dissipation rate of the oil; with increasing particle concentration, the flow field distribution of the turbulent kinetic energy increases in the region near the wall, and gradually decreases in the central region. The turbulent kinetic energy distribution of the oil is in the shape of a quasi‐cosine; the flow field of the dissipation rate is larger in the near‐wall region and the central region and shows an inverted ‘W’ shape. This provides a theoretical basis for improving the efficiency of oil transportation, discussing the monitoring of particulate matter in oil, and reducing oil pollution.

show abstract

Section: Introductionmentioning

confidence: 99%

Effects of particle concentration and size on the dissipation rate and turbulent kinetic energy of oil

Cheng

Liu

2023

Can J Chem Eng

View full text Add to dashboard Cite

show abstract

“…Therefore, the decay of TKE and strain rate is quicker in gas–solid two‐phase flows than single‐phase flows. Bayoudh et al showed that particle size and solid mass loading are the most influential parameters in two‐phase gas–particle flows. They proved that solid particles affect the turbulent structure of the gas phase.…”

Section: Introductionmentioning

confidence: 99%

A novel technique for solid mass loading measurement in dilute gas–solid two‐phase flow by vortex flow meter based on vortex shedding principles

Shirvani

Hashemabadi

2019

Asia-Pacific J Chem Eng

View full text Add to dashboard Cite

Vortex flowmeter has broad applications in industrial single-phase flow problems. There is experimental evidence suggesting that the presence of particles in gas-solid flows may cause a modulation in the turbulence intensity of the carrier phase. Using vortex flowmeter, one may manipulate vortex shedding generated by a bluff body and, therefore, change pressure fluctuation after bluff body and pressure drop between two sides of the vortex shedder. In this research, a vortex flowmeter with a differential pressure sensor was used to experimentally measure solid mass loading in a dilute gas-solid two-phase flow. The results indicated that the average bluff body pressure drop in gas-solid flows is always more than that occurring in gas flows, and the presence of particles can both attenuate and augment vortex shedding frequency. The results also showed that one can obtain the solid mass loading by means of pressure drop signals with a maximum relative error of 5%, which may be advantageous for industrial process measurement.KEYWORDS differential pressure, dilute gas-solid two-phase flow, solid mass loading measurement, vortex flowmeter

show abstract

Experimental and numerical study of erosive wear of t-pipes in multiphase flow

Khan,

Wieczorowski,

Seikh

et al. 2024

Engineering Science and Technology, an International Journal

View full text Add to dashboard Cite

Study of the effect of particles on the kinetic parameters of a turbulent two-phase flow

Cited by 3 publications

References 19 publications

Effects of particle concentration and size on the dissipation rate and turbulent kinetic energy of oil

Effects of particle concentration and size on the dissipation rate and turbulent kinetic energy of oil

A novel technique for solid mass loading measurement in dilute gas–solid two‐phase flow by vortex flow meter based on vortex shedding principles

Experimental and numerical study of erosive wear of t-pipes in multiphase flow

Contact Info

Product

Resources

About