Experimental study of circle grid fractal pattern on turbulent intensity in pipe flow

Manshoor, Bukhari; Zaman, Izzuddin; Othman, Mohd Fauzi; Khalid, Amir

doi:10.1088/1757-899x/50/1/012014

Cited by 4 publications

(2 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Helge Von Koch in 1904 then refined the definition of the Weierstrass function and adds on a more geometric definition that called Koch snowflake. As a high turbulent level occurred when a fluid flow through the fractal pattern [12], we expect that the fractal shape can give a significant effect on Applied Mechanics and Materials Vol. 660 817 mixing effectiveness due to their self similar shape.…”

Section: Fractal Conceptmentioning

confidence: 99%

An Effect of Fractal Baffles and Impellers with Double Stage 4-Blade Rushton Turbine to Fluid Flow Behaviour in Stirred Tank

Manshoor

Yusof

Laily

et al. 2014

AMM

Self Cite

View full text Add to dashboard Cite

Abstract. The stirred tank is widely used in many industries to obtain the desired type of fluid mixing. In the context of mixing process, two different fluids and have a different properties will mix in a single equipment to produce another fluid with a new property. In this research, a new approach of stirred tank which is containing a new design of baffles and impellers was proposed for fluid mixing. The new design of baffles and impellers that proposed here are used a fractal pattern for both parts in the stirred tank. Implementing a fractal pattern for baffles and impellers in stirred tank believe will influence the flow characteristic inside the stirred tank, hence will improve a mixing performance. In order to investigate the kinds of flow properties, a Particle Image Velocimetry (PIV) technique with 1 µm seeding particle was used. Four configurations were tested which are normal baffles and normal impellers, normal baffles and fractal impellers, fractal baffles and normal impellers, and the last configuration is fractal baffles and fractal impellers. In this study, dual Rushton impellers with 4 blades were used with the configurations mentioned. The result shows the significant flow field capture by PIV measurement on each configuration. By using fractal impeller some vortex are shown in the tank and high velocity vector on flow field compare with normal impeller while normal baffles gives high velocity vector depends on the configuration were used. From the results, it was showed that the fractal design can give a certain level of mixing efficiency in stirred tank. The PIV technique also gives good flow visualization in order to determine the flow pattern in stirred tank with a new concept of baffles and impellers.

show abstract

Section: Fractal Conceptmentioning

confidence: 99%

An Effect of Fractal Baffles and Impellers with Double Stage 4-Blade Rushton Turbine to Fluid Flow Behaviour in Stirred Tank

Manshoor

Yusof

Laily

et al. 2014

AMM

Self Cite

View full text Add to dashboard Cite

show abstract

“…Recently the thermo-fluid group from UTHM developed the concept of 'circle grids fractal' flow conditioner. Based on hot wire measurements of the mean velocity profiles and the axial turbulence intensity, the device has been shown to be efficient in the production of the fully developed condition within 5 pipe diameters of flow development [5]. Although this type of flow conditioner had been proved experimentally in term of efficiency and short distance fully developed velocity profile [6], there are several questions that need to be answered to define the geometry that would provide the optimum performance.…”

Section: Introductionmentioning

confidence: 99%

CFD Analysis of Circle Grid Fractal Plate Thickness on Turbulent Swirling Flow

Manshoor

Zaman

Jaat

et al. 2013

AMM

Self Cite

View full text Add to dashboard Cite

In this paper, steady state, incompressible, swirling turbulent flow through circle grid fractal plate has been simulated. The aim of the simulation is to investigate an effect of the circle grid fractal plate thickness in order to reduce swirling due to swirl disturbance in pipe flow. The simulation and analysis were carried out using finite volume CFD solver ANSYS CFX. Three different thickness of fractal plate were used in the simulation work with the thickness of 1 mm, 3 mm and 6 mm. The simulation results were compared with the pressure drop correlation of BS EN ISO 5167-2:2003 and turbulent model used, standard k-ε model gave the best agreement with the ISO pressure drop correlation. The effects of circle grid fractal plate thickness on the flow characteristics which are swirl angle and tangential velocity have been investigated as well.

show abstract

Effects of turbulent flow regime on perforated plate stabilized piloted lean premixed flames

Kim

Satija

Lucht

et al. 2020

Combustion and Flame

View full text Add to dashboard Cite

Experimental study of circle grid fractal pattern on turbulent intensity in pipe flow

Cited by 4 publications

References 10 publications

An Effect of Fractal Baffles and Impellers with Double Stage 4-Blade Rushton Turbine to Fluid Flow Behaviour in Stirred Tank

An Effect of Fractal Baffles and Impellers with Double Stage 4-Blade Rushton Turbine to Fluid Flow Behaviour in Stirred Tank

CFD Analysis of Circle Grid Fractal Plate Thickness on Turbulent Swirling Flow

Effects of turbulent flow regime on perforated plate stabilized piloted lean premixed flames

Contact Info

Product

Resources

About