Simulation and optimization of a conical type swirl-vane separator in nuclear SG

Wang, Ke; Liu, Li; Xu, Dehui; Gu, Hanyang

doi:10.1016/j.nucengdes.2023.112325

Cited by 3 publications

(2 citation statements)

References 25 publications

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“…More sophisticated approaches are needed when the pressure gradient field is nonuniform [27]. In the swirling contactor, the pressure gradient field is uniform so that the C vm is set to 0.5 which has been proven reasonable in studies [28,29]. The term d l dt denotes the phase material time derivative of the form:…”

Section: Governing Equationsmentioning

confidence: 99%

Bubble Interfacial Area in a Swirling Contactor: Experiments and Computational Fluid Dynamics Simulations

Xu,

Gong,

Wang

et al. 2023

Chem Eng & Technol

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The bubble size, gas holdup, and interfacial area in a swirling contactor were investigated through experiments and simulations. The interfacial area was obtained for liquids and gases with Reynolds numbers Rel and Reg, respectively. The contactor was divided into twelve subregions. Rel was negatively related to bubble size, gas holdup, and interfacial area, whereas Reg was positively associated. The maximum bubble interfacial area for the entire swirling contactor was 196.3 m−1 with a gas‐liquid ratio of 0.022. There is a trade‐off between centrifugal acceleration and bubble size for interfacial area.

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Section: Governing Equationsmentioning

confidence: 99%

Bubble Interfacial Area in a Swirling Contactor: Experiments and Computational Fluid Dynamics Simulations

Xu,

Gong,

Wang

et al. 2023

Chem Eng & Technol

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“…Vertical CDs are an integral part of devices for producing synthesis gas from various carbon materials [3,4]. CDs are also used in steam generators to assist in the separation of liquid and air [5]. Conical sections are often found in combustion chamber elements of gas turbines or burners [6].…”

Section: Introductionmentioning

confidence: 99%

The Influence of Supply Channel Design on the Gas-Dynamic Structure of Air Flow in a Vertical Conical Diffuser

Plotnikov,

Ryzhkov

2023

Applied Sciences

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Vertical conical diffusers are used in power engineering, chemical industry, technological processes, and other industries. The efficiency of many machines and pieces of equipment is determined by the gas-dynamic and heat-exchange perfection of processes in diffusers. This study assesses the influence of the air supply method on flow structure in a diffuser. The studies were carried out on a test bench with thermal imaging for air flow rates ranging from 0.018 to 0.057 m3/s (42,500 < Re < 150,000). Two designs were examined: (1) a conventional air supply through one channel from below and (2) a nozzle air supply through four tubes at an angle of 45° to the vertical axis. In addition, the influence of the cross-sectional shape of the supply channels of both designs was studied. It is established that the use of a conventional air supply through one channel leads to the generation of a pronounced central flow along the vertical axis (all configurations of the supply channel) and the creation of stagnant zones in the corners of the diffuser (round and triangular channels; the use of a square supply channel causes the most uniform air distribution throughout the entire volume of the diffuser (while maintaining the central flow). It is found that with nozzle air supply, there are no stagnant zones in the corners and intense air movement generation in the centre of the diffuser (round and triangular tubes) can be observed; the use of square nozzle tubes causes intense flow movement at the base of the diffuser, which quickly collapses upstream, uniformly filling the entire volume of the diffuser’s cylindrical part. The presented data can be useful for designing various machines and pieces of equipment with vertical conical diffusers.

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Analysis of stability and internal flow mechanisms in spiral annular flow with different swirlers

Wang,

Yang,

Yang

et al. 2024

Experimental Thermal and Fluid Science

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Simulation and optimization of a conical type swirl-vane separator in nuclear SG

Cited by 3 publications

References 25 publications

Bubble Interfacial Area in a Swirling Contactor: Experiments and Computational Fluid Dynamics Simulations

Bubble Interfacial Area in a Swirling Contactor: Experiments and Computational Fluid Dynamics Simulations

The Influence of Supply Channel Design on the Gas-Dynamic Structure of Air Flow in a Vertical Conical Diffuser

Analysis of stability and internal flow mechanisms in spiral annular flow with different swirlers

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