Comparison of Computational Fluid Dynamics of Slurry Flow in Coiled Tubing to Field Data

2007 ◽  
Author(s):  
Ivan Blanco ◽  
Michael Brent Bailey ◽  
Randy S. Rosine
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Field Data ◽  
Slurry Flow ◽  
Coiled Tubing

Slurry Flow Visualisation of Chemical Mechanical Polishing Based on a Computational Fluid Dynamics Model

2012 ◽  
Vol 565 ◽  
pp. 324-329 ◽  
Author(s):  
Y.B. Tian ◽  
S.T. Lai ◽  
Z.W. Zhong
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Chemical Mechanical Polishing ◽  
Mechanical Polishing ◽  
Operating Conditions ◽  
Flow Visualisation ◽  
Slurry Flow ◽  
Pressure Distributions ◽  
Model And Simulation ◽  
Flow Field Characteristics

In this work, we developed a computational fluid dynamics (CFD) model to simulate the slurry flow between the wafers and pad during the chemical mechanical polishing (CMP) process under a multiple-wafer configuration. A serial of simulations were carried out to visualise slurry flow and explore the effects of the process variables concerned on the flow velocity and pressure distributions beneath the wafers. Through the model and simulation, the flow field characteristics were obtained and analyzed under different operating conditions. The results can provide an insight into a fundamental understanding of the slurry flow behaviours under the multiple-wafer configuration and some useful implications for the selection of practical polishing variables.

scholarly journals Flow Characteristics of Multiphase Glass Beads-Water Slurry through Horizontal Pipeline using Computational Fluid Dynamics

2019 ◽  
Vol 16 (2) ◽  
pp. 6605-6623 ◽  
Author(s):  
Shofique Uddin Ahmed ◽  
Rajesh Arora ◽  
Om Parkash
Keyword(s):  
Fluid Dynamics ◽  
Experimental Data ◽  
Computational Fluid Dynamics ◽  
Pressure Drop ◽  
Control Volume ◽  
Particle Diameter ◽  
Solid Particles ◽  
Slurry Flow ◽  
Two Phase ◽  
Horizontal Pipe

Over the decades conveying solid particles through pipelines is a prevalent usage for many industries like food industries, pharmaceutical, oil and gas-solid handling, power generations etc. In the present study, slurry flow through 54.9 mm diameter and 4 m long horizontal pipe with solid particle diameter 0.125 mm and specific gravity 2.47 has been numerically analysed using a granular version of Eulerian two-phase model and RNG K-  model. The solid particles are considered as mono-dispersed in the Eulerian model. These models are available in computational fluid dynamics (CFD) fluent software package. Non-uniform structured three-dimensional mesh with a refinement near wall boundary region has been selected for discretising the flow domain, and governing equations are solved using control volume finite difference method. Simulations are conducted at velocity varying from 1 m/s to 5 m/s and efflux concentration varying from 0.1 to 0.5 by volume. Different slurry flow parameters such as solid concentration distribution, velocity distribution, pressure drop etc. have been analysed from the simulated results. The simulated results of pressure drop are correlated with the experimental data available in previous literature and are found to be in excellent compliance with the experimental data.

scholarly journals Numerical CFD Investigation of Shortboard Surfing: Fin Design vs. Cutback Turn Performance

Proceedings ◽  
2020 ◽  
Vol 49 (1) ◽  
pp. 132
Author(s):  
David Shormann ◽  
Luca Oggiano ◽  
Marc in het Panhuis
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Smooth Surface ◽  
Field Data ◽  
Ocean Waves ◽  
Cfd Simulations ◽  
Surface Features ◽  
Computational Fluid Dynamics Cfd ◽  
Fin Design ◽  
Resultant Forces

The surfing performance of two shortboard fin types with surface features were compared to a standard (control) fin with a smooth surface using dynamic computational fluid dynamics (CFD) simulations. The fins with surface features included designs with a partially grooved and serrated surface (CR), and humpback whale-inspired fins with tubercles and other features (RW). Surfboard roll, pitch and yaw during cutback maneuvers were simulated based on field data from surfers of intermediate, expert and professional (WCT) skill level surfing on ocean waves. Sustained resultant forces relative to the rider direction were significantly different between fin types, and lowest for RW at WCT-level rotations. CFD results also revealed RW’s ability to dampen effects of turbulent flow. RW fins were always the last to stall during a turn, and always exhibited the most gradual stall. CR fins had significantly lower pre-turn drag, and the highest mean resultant forces during the turn. Overall, CR fins appear best for forward acceleration and hold on the wave, while RW fins appear best for maneuverability and stability.

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