CFD analysis of slurry jet behavior after striking the target surface and effect of solid particle concentration on jet flow

2021 ◽  
Author(s):  
Nilesh Kumar Sharma ◽  
Satish Kumar Dewangan ◽  
Pankaj Kumar Gupta
Keyword(s):  
Solid Particle ◽  
Particle Concentration ◽  
Target Surface ◽  
Jet Flow ◽  
Cfd Analysis ◽  
Jet Behavior

A Model for the Effect of Velocity on Erosion of N80 Steel Tubing due to the Normal Impingement of Solid Particles

1992 ◽  
Vol 114 (1) ◽  
pp. 54-64 ◽  
Author(s):  
D. P. Chase ◽  
E. F. Rybicki ◽  
J. R. Shadley
Keyword(s):  
Solid Particle ◽  
Computational Study ◽  
Target Material ◽  
Target Surface ◽  
American Petroleum Institute ◽  
Solid Particles ◽  
Unknown Coefficient ◽  
Conservation Of Energy ◽  
Carrier Fluid ◽  
Erosion Behavior

As part of a combined experimental and computational study of erosion for gas and oil production conditions, a semi-empirical model has been developed to predict erosion ratio behaviors of metals due to solid particle impingement. One use of the model will be to reduce the total number of experiments needed to characterize erosion behavior. The model represents material property information associated with both the target material and the impinging particles, as well as impingement speed. Five different models are examined in terms of ability to predict erosion ratio behavior as a function of impingement speed. The model selected is based on a conservation of energy formulation and fracture mechanics considerations to predict the amount of material removed due to solid particle impingement. The resulting equation to predict the erosion ratio for a given particle size contains one unknown coefficient which is determined through comparison with experimental data. Illustrative examples are presented for data for two different sizes of glass bead solid particles in an oil carrier fluid impinging on an API (American Petroleum Institute) N80 grade steel target at an impingement angle 90 deg to the target surface. Using erosion data at one impingement speed to determine the unknown coefficient, the model was used to predict erosion behavior at a range of other speeds. Good agreement between the erosion ratio data and the values predicted by the model were found for two solid particle sizes. Recommendations for expanding the capabilities of the model are pointed out.

Mechanisms of melt droplets and solid-particle ejection from a target surface by pulsed laser action

1995 ◽  
Vol 61 (1) ◽  
pp. 81-86 ◽  
Author(s):  
A. B. Brailovsky ◽  
S. V. Gaponov ◽  
V. I. Luchin
Keyword(s):  
Solid Particle ◽  
Laser Action ◽  
Pulsed Laser ◽  
Target Surface ◽  
Particle Ejection

Localized Particle Concentration Measurement in Slurry Flows Using A-Scan Ultrasound Technique

2009 ◽  
Author(s):  
John M. Furlan ◽  
Venkat Mundla ◽  
Jaikrishnan Kadambi ◽  
Nathaniel Hoyt ◽  
Robert Visintainer ◽  
...  
Keyword(s):  
Solid Particle ◽  
Particle Concentration ◽  
Volume Fraction ◽  
Computational Study ◽  
Solid Particles ◽  
Acoustic Properties ◽  
Imaging Method ◽  
Concentration Profiles ◽  
Calibration Data ◽  
Slurry Flows

In the design of slurry transport equipment, the effects of solid particle concentration on hydraulic performance and wear have to be considered. This study involves examining the acoustic properties of slurry flows such as velocity, backscatter and attenuation as a function of volume fraction of solid particles. Ultrasound A-mode imaging method is developed to obtain particle concentration in a flow of soda lime glass particles (diameter of 200 micron) and water slurry in a 1″ diameter pipe. Based on the acoustic properties of the slurry a technique is developed to measure local solid particle concentrations. The technique is used to obtain concentration profiles in homogeneous (vertical flow) and non-homogeneous (horizontal flow) slurry flows with solid particle concentrations ranging from 1–10% by volume. The algorithm developed utilizes the power spectrum and attenuation measurements obtained from the homogeneous loop as calibration data in order to obtain concentration profiles in other (i.e. non-homogenous) flow regimes. A computational study using FLUENT was performed and a comparison is made with the experimental results. A reasonable agreement between the experimental and computational results is observed.

210 Classification of Fine Solid Particle by Coanda Jet Flow

2000 ◽  
Vol 2000.49 (0) ◽  
pp. 77-78
Author(s):  
Toshihiko Shakouchi ◽  
Toshitake Ando ◽  
Koji Hase ◽  
Satoshi Terashima
Keyword(s):  
Solid Particle ◽  
Jet Flow ◽  
Coanda Jet

scholarly journals PARSEC-SCALE JET BEHAVIOR OF THE QUASAR 3C273 DURING A HIGH GAMMA-RAY STATE IN 2009–2010

2012 ◽  
Vol 08 ◽  
pp. 356-359 ◽  
Author(s):  
S. JORSTAD ◽  
A. MARSCHER ◽  
P. SMITH ◽  
V. LARIONOV ◽  
I. AGUDO ◽  
...  
Keyword(s):  
Gamma Ray ◽  
Jet Flow ◽  
Strong Increase ◽  
Optical Variability ◽  
Optical Polarization ◽  
High Gamma ◽  
Jet Behavior ◽  
Intensity Images ◽  
Γ Ray

We analyze total and polarized intensity images of the quasar 3C273 obtained at 43 GHz monthly during 2008-2010 with the VLBA. We find a strong increase of activity in the parsec-scale jet during a high γ-ray state lasting from 2009 June to 2010 May featuring an increase of the total and polarized flux in the mm-wave core and the appearance of superluminal knots in the jets. Although the optical variability is low, owing to strong contamination by the big blue bump, we observe an increase in optical polarization by a factor of 3 during a gamma-ray flare in 2010 April. We discuss the locations in the jet where high gamma-ray fluxes occur. These include stationary features in the jet flow that we identify with standing shocks.

scholarly journals Numerical and experimental study on the flow characteristics and the erosive ability of magnetorheological jet

2021 ◽  
Author(s):  
Zhe Lv ◽  
Rongguo Hou ◽  
Ping Lu ◽  
Xiangtian Wang
Keyword(s):  
Numerical Models ◽  
Pure Water ◽  
Fluid Pressure ◽  
Flow Characteristics ◽  
Target Surface ◽  
Jet Flow ◽  
Surface Finishing ◽  
Abrasive Particles ◽  
Excitation Coil

Abstract Fluid jet machining has been widely used in machining of hard-brittle materials. However, the diffusion of jet flow significantly affects the erosion capacity. Magnetorheological fluid has been considered to take the role of pure water for carrying abrasive particles, due to its better concentration when the external magnetic field is applied. The present investigation focuses on the flow characteristics of magnetorheological jet, which are involved in the basic aspects of erosion mechanism. Numerical models of excitation coil and jet flow field were established to investigate the fluid pressure distribution on the target surface and the trajectories of laden particles. Experiments were also conducted to verify the simulation results and evaluate the feasibility of MR jet on surface finishing. The results indicated that the utilization of high magnetic intensity can effectively improve the concentration of jet flow and the processing quality of workpiece surface.

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