Experimental Study On Natural Vortex Length In A Cyclone Separator

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University of Canterbury

ACK.NOWLEDGEMENTS I am very grateful to Dr John Abrahamson for his guidance and supervision of the work in this thesis. He has paid a lot of energy and time to check my work and m

Simulation of turbulent flow in a cyclonic separator

the vortex-finderpipe of the cyclone towards the top out-flow. In this study the bottom escape is closed as the main objective of this study is to investigate the single-phase carrier flow, which is supposed to leave through the top of the domain. The actual size and the half-angle α of the cyclone are determined by the given particle

Applied Mathematical Modelling - CORE

The importance of inlet dimensions becomes clearer after the study of natural length (or vortex length) by several researchers, e.g. Alexander [15]. The cyclone has two spiral motions, outer and inner. In the reverse flow cyclone, the outer vortex weakens and changes its direction at a certain axial distance L n from the vortex finder [16].

CFD Simulations of Pressure Drop and Velocity Field in a

vortex finder total length Hvf 0.222 m vortex finder inner length Hvfi 0.185 m disc height Hd 0.002 m dust outlet gap s 0.020 m Table 2. Models to calculate the natural vortex length, L c, and its values for the test cyclone s geometry with: D vf, the vortex finder diameter, D cb, the diameter of the cyclone body (without spiral inlet

Turbulence modification by particles in a backward-facing

Cyclone separator Particle tote Particle hopper Grids Particle feeder Grids Development section 5.2 m Test section 10:1 contraction Figure1.Schematic of experimental facility. scale characterizing the average particle slip velocity relative to the flow. A number of velocity scales may be appropriate to characterize the average particle slip


DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency Thereof, nor

Sriwijaya International Conference on Engineering, Science

ISBN: 978-1-5108-3749-2 Sriwijaya International Conference on Engineering, Science and Technology (SICEST 2016) Bangka Island, Indonesia 9 - 10 November 2016

Droplet collection in a scaled-up rotating separator

(a) Vane pack (b) Cyclone deck (c) Rotating element Figure 1.3. Mist extractors in natural gas processing The RPS, which in these type of applications stands for rotating phase separator, e ectively separates droplets down to 1 micron, even at the large ows associated with natural gas processing. In a previous study RPS and cyclone have been


CFD simulations help scientists develop cyclone dimensions improved for better performance. Of these dimensions, the vortex finder (VF) is of considerable importance since the diameter (VFD) and the length (VFL) of the vortex finder have a clear impact on the behavior of the inner and outer vortices within the cyclone separator.

Numerical Simulation on the Performance of Axial Vane Type

Gas-liquid separator is an important equipment for two-phase separation in the oil, natural gas and chemical industry, which is classified into tangential or reversal type separator and axial flow separator according to the of fluid ingflow in the direction apparatus[1-3]. The axial type cyclone separator was first presented in 1948[4].

On the Compressible Bidirectional Vortex. Part 2: A

on the experimental testing discipline in the context of cyclone separators. Early experiments, such as those by ter Linden,7 were concerned with improving the e ciency of the separator. Additional early investigations8 10 provided vital insights into the qualitative features of confined vortex motions, noting the ubiquitous presence of a


Vortex finder diameter d vf 50 Cyclone height H 920 Chinese hat height h 300 Figure 1: Sketch of separator: 1. swirl blades, 2. chinese hat, 3. inlet flow, 4. gas outlet vortex finder, 5. liquid outlet. Typically, the separator receives a gas-liquid flow in the tangential inlet, which promotes a rotational movement. Flow

Research Article Experimental and Numerical Study on the

MathematicalProblems in Engineering (a) D d h L l D1 De (b) F : Geometry of the axial ow cyclone separator. 1 2 2 3 3 4 5 6 F : e layout of the experimental device

CFD Modeling of Gas Solid Cyclone Separators at Ambient and

Feb 15, 2020 the inner vortex. The inner vortex is led to the exit pipe, which is usually extended to the cyclone body to separate the inner vortex from the inlet velocity field. The axial distance from the vortex end location to the vortex finder is termed the natural turning length [19]. The double vortex structure is

Curriculum Vitae - Academia Europaea

the SPS cyclone research program, reporting to the sponsor-ing industries. Consultant in gas cleaning. Made the safety case for, and commissioned, an industrial scale experimental rig. 03/1978 03/1979 Engineer at UOP, Chicago, USA. Operated oil refining pi-lot plants. Researched processes for recovering heavy metals from oil residues.


The aim of this study is to analyze the flow in a tangential inlet cyclone and investigate the effects of the surface roughness and the inlet velocity on the flow behavior and pressure losses. 2. MATHEMATICAL MODEL AND NUMERICAL PROCEDURE 2.1 Governing Equations The air flow inside cyclone separator is generally time dependent and unstable.

Study on the Measuring Method of Industrial Dust Content in

Study on the Measuring Method of Industrial Dust Content in the Air by a Very Small Cyclone Separator From the experimental results, our very small cyclone with a

highly swirling turbulent flows in cyclones

cyclone vortex may not reach the cone apex. The collection efficiency increases with increasing cyclone length up to a certain value and then starts decreasing (see, for example, Alexander9 and Zhu and Lee12. The natural vortex length was first defined and formulated by Alexander9. In addition, Avci and Karagoz13 proposed a theoretical model


Experimental results (Figs. 3 and 4) showed that using the hydrocyclone separation at its maximum experimental feed pressure of 172.5kPa, the maximum recovery of tita-nium was 63.8% with a grade of 32.9% and the maximum recovery of iron was 64.6% with a grade of 15.6%. FIGURE 2 Cross section of the magnet coupling for the magnetic hydrocyclone.

Design and Computation of COP of Vortex Tube

Vortex tube was first experimentally tested in the year 1933 by George Ranque while observing a thermal division in a cyclone separator This primary design was altered in the year 1947 by Hilsch. In the subsequent years, more modifications was achieved by higher performance of the vortex tubes and to study

8 VIII August 2020 https://doi.org/10.22214/ijraset.2020

Fig 1. Schematic diagram of cyclone separator (Elsayed, 2011). They simply transform the inertia force of gas particle flows to a centrifugal force by means of a vortex generated in the cyclone body. The particle laden air stream enters tangentially at the top of the barrel and travels downward into the cone forming an outer vortex.

International Journal of Engineering

flow inside a cyclone when an internal vortex was inserted inside the cyclone. Hoffman et al. [22] and Safikhani et al. [23] concentrated on study of the height of the cyclones. Furthermore, the effect of holes in the cyclone and hem of the internal walls of the cyclone was studied by Wang et al. [24] 2. 2.

3D Velocimetry and droplet sizing in the Ranque Hilsch vortex

Fig. 2 Schematic overview of the experimental setup as used in the experiments Gas Inlet Cold Exit Control Valve Hot Exit Cold Exit Vortex Chamber z = 0 z r z = L 2R Main Tube 4R Fig. 1 Ranque Hilsch vortex tube. R and L are the vortex tube radius and length, respectively; r and z are the radial and axial coordinates, respectively

Design of an Energy-saving Hydrocyclone for Wheat Starch

vortex finder length is about 10 % of the total length of the hydrocyclone high efficiencies can be reached (Fernández Martínez et al., 2008). An interesting phenomenon to consider is the formation of air cores (Gupta et al., 2008). The air core is a strip of air extended vertically throughout the whole axis of the

Ansys Fluent Cyclone - timesheet.arccore.com

May 17, 2021 study Multiscale and Multiresolution Approaches in Turbulence The Hydrocyclone reviews data on the theoretical, design, and performance aspects of the liquid cyclone, hydraulic cyclone, or hydrocyclone. The book aims to be a source of reference to those who are in industries employing the use and application of the hydrocyclone.


2.1. Experimental Setup The details of the experimental setup (Fig. 1) are given in Karadeniz [21]. The lab-scale cyclone system consists of a particle dosing equipment, a differential pressure transmitter, a cyclone separator, and an air fan. S. Demir, A. Karadeniz, K. Ulutaş / Sigma J Eng & Nat Sci 38 (2), 613-622, 2020

Cyclone Collection Efficiency: Comparison of Experimental

The cone diameter at the natural length is If the natural length exceeds (H - S), I in Eqs. (12) and (14) is replaced by (H - S). The vortex exponent, n, describes the change in tangential gas velocity with radial position, r, in the cyclone: u,rn = constant. Experimental studies of cyclone flow pat-

Volume-7 Issue-4 April-2018 PRINT ISSN No 2250-1991

of natural gas cyclones through addition oftangential chambers ELSEVIER. 36-42. Parameter Diameter Cyclone diameter 450 Cone length 800 Barrel height 300 Dust exist 130 Vortex finder diameter 120 Vortex finder length 150 Inlet section 150 Outlet section 170 Parameter Diameter Cyclone diameter 450 Cone length 800 Barrel height 300 Dust exist 130

A Novel Design of a Counter-Flow Vortex Tube

by Ranque [1] during the study in a cyclone separator. Later, Hilsch [2] performed experimental and theo-retical studies to increase the efficiency of the vortex tube. He also found that angular velocity gradients in radial direction lead to this temperature separation. Several researchers also put forth the statements on


whose total length of the pipeline is 97 meters were investigated. The design pressure of the experimental device is 10 MPa, the temperature regulation range is from -10 to 50℃ and the diameter is 25 fmm. The hydrate formation and flow rule under the water/natural gas


vortex tube. An experimental investigation of the energy separation process in the vortex tube was conducted by Stephan [8]. There were measured temperature profiles at different positions along the vortex tube axis with conclusion the vortex tube length has an important influence on the transport mechanism inside.


Many numerical and experimental studies have been done to examine the internal flow and the efficiency in cyclone separators [3] [5]. There are studies that examine the vortex length as well as studies investigating separators with different inlet geometries [6]. Lapple cyclone has been studied both numerically and experimentally [7].


production. It is necessary to study the velocity distributions in different sections along the channel length, as well as the mixing of the forward and backward gas flows. 4. Experimental investigation of the blade swirler Fig. 2 shows a schematic diagram of the vortex apparatus, which is used for carrying out experimental work.

PAPER OPEN ACCESS The CFD Simulation of Cyclone Separator

This study simulated the three type of geometry (A, B and C) of the cyclone separator. Geometry A is geometry cyclone separator without counter-cone (existing cyclone separator type in the laboratory of Mechanical Engineering Education-UNS) (Fig. 1). Geometry B is cyclone separator with counter-cone and apex angle 900 (Fig. 2).

Trends in Supersonic Separator design development

Supersonic separator is a new technology with applications in hydrocarbon dew pointing and gas dehydration which can be used to condensate and separate water and heavy hydrocarbons from natural gas. Many researchers have studied the design, performance and efficiency, economic viability, and industrial applications of these separators.


length and 20 cm, the effect of changing cyclone length were studied The results of experimental measurements are compared with data obtained from numerical solution. The given results show qualitative agreement with each other. Key word: Cyclone separator, Cyclone collection efficiency, Pressure drop, Computational fluid dynamic.

In-line Centrifugal Separation of Dispersed Phases

50 % of particles which enter the cyclone will be present in the area r > R= ffiffiffi 2 p,50% in the area r , R= ffiffiffi 2 p. The diameter of the particles which has a probability of 50% of reaching the collecting wall in a cyclone of length L can therefore be calcu-lated from (Eq. 8) by taking for rðtÞ¼R;rð0Þ¼R= ffiffiffi 2 p and t ¼

Experimental Investigation of Dry Ice Cyclone Separator for

2, a cyclone separator was developed and constructed, as shown in Figure 1. The experimental set-up has three components: a cylinder tank that contains liquid CO 2 at 12 MPa and 15 C, an ori-fice nozzle, a cyclone separator. The cyclone separator, which is made of acryl for visualization consists of an inlet channel, outlet channel, separator