Consideration of inclined mixers embedded inside a photobioreactor for microalgae cultivation using computational fluid dynamic and particle image velocimetry measurement

2018 ◽  
Vol 195 ◽  
pp. 753-764 ◽  
Author(s):  
Kolsoom Azizi ◽  
Mostafa Keshavarz Moraveji ◽  
Hossein Hassanzadeh ◽  
Hamed Abedini Najafabadi
Keyword(s):  
Particle Image Velocimetry ◽  
Particle Image Velocimetry Measurement ◽  
Computational Fluid Dynamic ◽  
Particle Image ◽  
Fluid Dynamic ◽  
Microalgae Cultivation ◽  
Image Velocimetry

Particle Image Velocimetry Used to Qualitatively Validate Computational Fluid Dynamic Simulations in an Oxygenator: A Proof of Concept

2015 ◽  
Vol 6 (3) ◽  
pp. 340-351 ◽  
Author(s):  
Peter C. Schlanstein ◽  
Felix Hesselmann ◽  
Sebastian V. Jansen ◽  
Jeannine Gemsa ◽  
Tim A. Kaufmann ◽  
...  
Keyword(s):  
Particle Image Velocimetry ◽  
Computational Fluid Dynamic ◽  
Particle Image ◽  
Fluid Dynamic ◽  
Proof Of Concept ◽  
Dynamic Simulations ◽  
Image Velocimetry

Particle Image Velocimetry Measurement and Computational Fluid Dynamic Simulations of the Unsteady Flow Within a Rotating Disk Cavity

2014 ◽  
Vol 136 (11) ◽  
Author(s):  
Xiang Luo ◽  
Dongdong Liu ◽  
Hongwei Wu ◽  
Zhi Tao
Keyword(s):  
Particle Image Velocimetry ◽  
Computational Fluid Dynamic ◽  
Particle Image ◽  
Fluid Dynamic ◽  
Three Dimensional ◽  
Rotating Disk ◽  
Turbine Rotor ◽  
Dynamic Simulations ◽  
Image Velocimetry ◽  
The Impact

In this article a combined experimental and numerical investigation of the unsteady mixing flow of the ingestion gas and rim sealing air inside a rotating disk cavity was carried out. A new test rig was set up, and the experiments were conducted on a 1.5-stage turbine rotor disk and included pressure measurements. The flow structure of the mixing region of the ingestion gas and sealing air in cavity was measured using the particle image velocimetry (PIV) technique. To complement the experimental investigation and to aid in understanding the flow mechanism within the cavity, a three-dimensional (3D) unsteady computational fluid dynamic (CFD) analysis was undertaken. Both simulated and experimental results indicated that near the rotating disk, (i) a large amount of the ingestion gas will turn around and flow out the cavity due to the impact of the centrifugal force and the Coriolis force, (ii) a small amount of ingestion gas will mix transiently with the sealing air inside the cavity, whereas near the static disk, (iii) the ingestion gas will flow into the cavity along the static wall and mix with the sealing air.

An Experimental Study on the Performance of Drag-Reducing Polymers in Single- and Multiphase Horizontal Flow Using Particle Image Velocimetry

2018 ◽  
Vol 140 (5) ◽  
Author(s):  
Ihab H. Alsurakji ◽  
A. Al-Sarkhi ◽  
M. Habib ◽  
Hassan M. Badr
Keyword(s):  
Particle Image Velocimetry ◽  
Particle Image ◽  
Pipe Wall ◽  
Fluid Dynamic ◽  
Water Soluble ◽  
Experimental Investigations ◽  
Two Phase ◽  
Image Velocimetry ◽  
Flow Field Characteristics ◽  
Phase Water

This paper presents experimental investigations conducted to understand the influence of water-soluble drag-reducing polymers (DRPs) in single- and two-phase (stratified wavy) flow on flow-field characteristics. These experiments have been presented for water and air–water flowing in a horizontal polyvinyl chloride 22.5-mm ID, 8.33-m long pipe. The effects of liquid flow rates and DRP concentrations on streamlines and the instantaneous velocity were investigated by using particle image velocimetry (PIV) technique. A comparison of the PIV results was performed by comparing them with the computational results obtained by fluent software. One of the comparisons has been done between the PIV results, where a turbulent flow with DRP was examined, and the laminar–computational fluid dynamic (CFD) prediction. An agreement was found in the region near the pipe wall in some cases. The results showed the powerfulness of using the PIV techniques in understanding the mechanism of DRP in single- and two-phase flow especially at the regions near the pipe wall and near the phases interface. The results of this study indicate that an increase in DRP concentrations results in an increase in drag reduction up to 45% in single-phase water flow and up to 42% in air–water stratified flow.

scholarly journals Fluid Dynamic Assessment of Three Polymeric Heart Valves Using Particle Image Velocimetry

2006 ◽  
Vol 34 (6) ◽  
pp. 936-952 ◽  
Author(s):  
Hwa Liang Leo ◽  
Lakshmi Prasad Dasi ◽  
Josie Carberry ◽  
Hélène A. Simon ◽  
Ajit P. Yoganathan
Keyword(s):  
Particle Image Velocimetry ◽  
Heart Valves ◽  
Particle Image ◽  
Fluid Dynamic ◽  
Dynamic Assessment ◽  
Image Velocimetry

Particle Image Velocimetry Measurements in a Representative Gas-Cooled Prismatic Reactor Core Model: Distribution of Flow From the Upper Plenum to the Fuel Block Arrangement

2013 ◽  
Author(s):  
Thomas E. Conder ◽  
Ralph S. Budwig ◽  
Richard S. Skifton
Keyword(s):  
Particle Image Velocimetry ◽  
Particle Image ◽  
Fluid Dynamic ◽  
National Laboratory ◽  
Reactor Core ◽  
Flow Distribution ◽  
Flow Rates ◽  
Image Velocimetry ◽  
Direct Support ◽  
Block Arrangement

An experiment was conducted at Idaho National Laboratory to investigate the bypass flow associated with a Gas Turbine-Modular Helium Reactor in direct support of Computational Fluid Dynamic validation [1]. Velocity fields within a representative quartz model, consisting of an upper plenum, upper block, and lower block, were measured using Particle Image Velocimetry; after which, flow rates were calculated in each section. The present study was carried out to determine flow distribution from the upper plenum to the fuel block assembly. It was found that the flow rates in the lower six coolant channels varied from their average only by 2.4, 4.6, and 2.5% for the low, medium, and high flow cases, respectively. Consequently, it was concluded that the non-uniform inlet velocity condition in the upper plenum had insignificant effect on flow distribution to the coolant channels and interstitial gap.

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