Simulation and Experimental Study of Effect of Vortex Finder Structural Parameters on Cyclone Separator Performance

2021 ◽  
pp. 120394
Author(s):  
Zheng-Wei Zhang ◽  
Qing Li ◽  
Yan-Hong Zhang ◽  
Hua-Lin Wang
Keyword(s):  
Experimental Study ◽  
Structural Parameters ◽  
Cyclone Separator ◽  
Vortex Finder

scholarly journals Influence of Vortex Finder Structure on Separation Performance of Double-Overflow Three-Product Hydrocyclones

Separations ◽  
2021 ◽  
Vol 8 (6) ◽  
pp. 79
Author(s):  
Yuekan Zhang ◽  
Jiangbo Ge ◽  
Lanyue Jiang ◽  
Hui Wang ◽  
Junru Yang ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Flow Field ◽  
Experimental Research ◽  
Separation Efficiency ◽  
Structural Parameters ◽  
Separation Performance ◽  
Insertion Depth ◽  
Flow Field Characteristics ◽  
Vortex Finder ◽  
Fine Classification

In view of the difficulty of traditional hydrocyclones to meet the requirements of fine classification, a double-overflow three-product (internal overflow, external overflow and underflow) hydrocyclone was designed in this study. Numerical simulation and experimental research methods were used to investigate the effects of double-overflow flow field characteristics and structural parameters (i.e., internal vortex finder diameter and insertion depth) on separation performance. The research results showed that the larger the diameter of the internal vortex finder, the greater the overflow yield and the larger the cut size. The finest internal overflow product can be obtained when the internal vortex finder is 30 mm longer than the external vortex finder. The separation efficiency is highest when the internal vortex finder is 30 mm shorter than the external vortex finder.

Study on Relationship between Structural Parameter and Performance of Gas-Solid Separator

2011 ◽  
Vol 415-417 ◽  
pp. 1516-1520
Author(s):  
Xue Ping Wang ◽  
Zhen Wei Zhang
Keyword(s):  
Numerical Simulation ◽  
Gas Flow ◽  
Separation Efficiency ◽  
Structural Parameters ◽  
Structural Parameter ◽  
Exhaust Pipe ◽  
Cyclone Separator ◽  
Structure Parameter ◽  
Gas Field ◽  
And Performance

This paper mainly focuses on the numerical simulation of the gas flow field of cyclone separator. The authors took advanced of RSM turbulence model of software Fluent to simulate the gas field. The regulations among structure parameter of exhaust pipe, pressure lose and separation efficiency can be obtained according to the numerical simulation results under the situation of changing the structural parameters. The conclusion of this paper can put forward the theoretical reference for the structure optimization of cyclone separation.

Numerical Simulation of Gas Flow in a Square Cyclone Separator With Double Inlets

2007 ◽  
Author(s):  
Bin Xiong ◽  
Xiaofeng Lu ◽  
R. S. Amano
Keyword(s):  
Pressure Drop ◽  
Flow Field ◽  
Gas Flow ◽  
Numerical Study ◽  
Reynolds Stress Model ◽  
Cyclone Separator ◽  
Stress Model ◽  
Inlet Velocity ◽  
Vortex Finder ◽  
Flow Changes

This paper presents a numerical study of gas flow in a square cyclone separator with a double inlet. The turbulence of gas flow is computed by the use of the Reynolds stress model. The distribution of the flow field and pressure drop under different constructional details, which include changes of the shape, size and arrangement of the vortex finder are obtained. The computed results in the distributions of pressure in different sections are verified by comparison with those measured. We found that the center of the flow field is nearly on the geometric center of the cyclone. The flow fields show a feature of Rankine eddy, i.e., a strongly swirling region in the central part and a pseudo-free eddy region of weak swirling intensity near the cyclone wall. Local vortex exists at the corners where the flow changes their direction sharply, but it is less chaotic than in the general square cyclone with a single inlet. The flow field away from the outlet of the vortex finder is different from the Rankine eddy. The pressure-drop increases rapidly with the increase of the inlet velocity, and the pressure-drop increases with the decrease of the diameter of vortex finder and the increase of length of the vortex finder. The calculat ed results of this paper provide some guidance for the optimization of the square cyclone separator structure.

scholarly journals ЕКСПЕРИМЕНТАЛЬНЕ ДОСЛІДЖЕННЯ ІНТЕНСИВНОСТІ ОБРОБЛЕННЯ МАТЕРІАЛУ В АВТОМАТИЧНІЙ ПРАЛЬНІЙ МАШИНІ

2019 ◽  
Vol 130 (1) ◽  
pp. 18-25
Author(s):  
О. Ю. Воляник
Keyword(s):  
Material Processing ◽  
Experimental Study ◽  
Structural Parameters ◽  
Experiment Planning ◽  
Mathematical Methods ◽  
Light Industry ◽  
Washing Machines

Conducting an experimental study of the influence of the structural parameters of the drum crests on the intensity of centrifugal material processing in automatic household washing machines. Methodology. The methods used to evaluate the efficiency of washing light industry materials and the mathematical methods of experiment planning.

scholarly journals Estimation of the dependence of aerodynamic resistance of the bulk tank on porosity and rate of filtration

Vestnik IGEU ◽  
2019 ◽  
pp. 16-24
Author(s):  
G.A. Perevezentsev ◽  
V.A. Gorbunov ◽  
O.B. Kolibaba
Keyword(s):  
Experimental Study ◽  
Structural Parameters ◽  
Aerodynamic Resistance ◽  
Heating Time ◽  
Air Filtration ◽  
Gas Filtration ◽  
Filtration Process ◽  
Fluid Filtration ◽  
Application Range ◽  
Bulk Tank

One of the effective ways to intensify heat exchange processes in the bulk tank is organization of gas filtration through the tank. However, it is necessary to compare the positive effect obtained by reducing the heating time and, hence, the required amount of heat input with the resistance of the bulk tank, which affects the choice of equipment. The existing formulas for determining tank layer resistance, as a rule, have a limited application range due to a number of structural parameteres. Thus, obtaining the value of the aerodynamic resistance of bulk tanks of different structures is an important task for determining the amount of energy consumed for the organization of the filtration process. The work employed the data obtained in the experimental study of fluid filtration through a porous medium in the range of porosity values. The method of nonlinear regression analysis was used to approximate the desired dependence. Based on the data on the resistance of bulk tanks of different porosity obtained in the experimental study, the authors have derived an empirical polynomial dependence of the resistance of bulk tanks on the fluid mass flow rate and porosity. This equation can be applied for the filtration rate values from 2 to 8 m/s and porosity values from 0,345 to 0,888 regardless of the structural parameters of the bulk tank layer. The authors carried out mathematical modeling of the air filtration process through the tank by replacing the real structure with a fractal-like model. The obtained results allow optimizing the operating parameters of the equipment in thermal heating furnaces, and the presented dependence can be used to determine the aerodynamic resistance of bulk tanks, affecting the choice of traction equipment in the reconstruction of furnaces. The accuracy of the obtained results is determined by the experiment error, which does not exceed 7 %.

Numerical and Experimental Study on the Dynamic Behavior of an Innovative Steel-Concrete Composite Hollow Waffle Floor

2020 ◽  
Vol 20 (08) ◽  
pp. 2050087
Author(s):  
Xi Zhang ◽  
Qing Li ◽  
Yousan Wang ◽  
Qiming Wang
Keyword(s):  
Experimental Study ◽  
Structural Parameters ◽  
Design Guidelines ◽  
Element Analysis ◽  
Long Span ◽  
Vibration Serviceability ◽  
Floor Vibration ◽  
Walking Tests ◽  
Vibration Performance ◽  
Hollow Beams

The U-shaped steel-concrete composite hollow waffle (CHW) floor is an innovative slender large-span floor composed of a thin slab and bidirectional orthogonal steel-concrete composite hollow beams. Large vibrations may occur under human excitations, and vibration guidelines for CHW floors are still lacking. Thus, this paper undertook a parametric and experimental study to explore the vibration performance of the CHW floors. First, the modal properties and vibration response under walking tests considering the varying frequencies and routes were obtained from the measurements, which validated the accuracy of the finite element analysis (FEA). Then, the influence of the structural parameters on the floor vibration was investigated by numerical modeling. The parametric study shows that the medium-sized long-span (MLS) (28[Formula: see text]m) CHW floors present the best vibration serviceability, the small-sized long-span (SLS) (14[Formula: see text]m) CHW floors vibrate substantially under walking excitation, and the large-sized long-span (LLS) (42[Formula: see text]m) CHW floors are vulnerable to resonance. Finally, this paper provides recommendations for design guidelines for CHW floors and indicates that controlling the span-to-height (SH) value and beam spacing (BS) at a small value are the most effective methods of vibration control.

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