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Pump Systems

THE SOLIDS PUMPING & TANK MIXING SPECIALISTS

Vaughan
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Menu
  • Home
  • About
  • Products
    • Vaughan Chopper Pumps
      • The Vaughan Concept
      • Pump Configurations
      • Vaughan Applications
      • Performance Curves
    • Rotamix Mixing Systems
      • The Rotamix Concept
      • System Components
      • Rotamix Applications
      • CFD Modelling
    • Demonstration Videos
      • Wet Wipes Demo Video
  • Projects
  • News
  • Contact

CFD Modelling

  • Vaughan Chopper Pumps
    • The Vaughan Concept
    • Pump Configurations
    • Vaughan Applications
    • Performance Curves
  • Rotamix Mixing Systems
    • The Rotamix Concept
    • System Components
    • Rotamix Applications
    • CFD Modelling
Demonstration Videos

See it to believe it - a Vaughan Chopper Pump in action speaks for itself. Follow the link below, sit back, and enjoy!

demo videos
guaranteed performance

Computational Fluid Dynamics

Computational Fluid Dynamics (CFD) is a form of fluid mechanics that uses numerical methods and algorithms to solve and analyse problems involving fluid flow, the techniques of which are similar to finite element stress analysis. Essentially, fluid volumes are broken down into hundreds of thousands of volume elements to be analysed. The final results can then be plotted in various formats as described below.

The CFD modelling software used at Vaughan Co. for analysis is among the top programs available in the world for this type of detailed computer flow modelling work. Over the past 8 years, Vaughan Co. has evaluated well over 1000 different wastewater, sludge and bio-solids systems for use with its products. All Rotamix mixing system designs are supported by CFD analysis, either by standard modelled geometries, or using customised models individualised to meet specific application parameters on a consultation basis.

cfd pump
Velocity Plots
Pathline Plots
Isosurface Plots
Tracer Burst Analysis
Other Geometries
Velocity Plots

Velocity Plots

 

velocity plot

Shown as cross-sections through vertical or horizontal planes, velocity plots help to describe mixing energy distribution within the tank. Velocity plots have proven that small diameter nozzles producing high velocities provide more complete mixing than larger diameter low-velocity nozzles designs using equal amounts of energy. Higher velocities allow flow patterns to travel farther, while inducing significantly more entrained fluid. Unlike systems that use a standard non-clog pump, the Rotamix system is able to safely use smaller diameter nozzles without the risk of plugging, as whole solids are continuously reduced in size by the Vaughan mixing chopper pump.

Pathline Plots

Pathline Plots

 

pathline plot

Pathline plots illustrate the path of flow for a particle starting at any given point. The plotted path shows the actual movement of the particle around the tank, confirming both horizontal and vertical movement within the mixing pattern. Pathline plots are useful for showing particle movement in a tank that has reached steady state (a period of time determined to ready a steady state of mixing with a tank) and can also be used to show the re-suspension of a particle from a point on the tank floor.

Isosurface Plots

Isosurface Plots

 

isosurface plot

Rotamix nozzles are strategically aimed to spread mixing energy to all regions and levels of the tank. Isosurface plots can be used to illustrate the effect of the high velocity Rotamix nozzle plumes as they drive tank mixing. Isosurface plots are often also used to assess tracer washout simulation results by focusing on specific areas of concentration inside the tank after a given period of mixing time.

Tracer Burst Analysis

Tracer Burst Analysis

 

tracer plot

In addition to all of the standard CFD simulations available for Rotamix, Vaughan Co. has also developed the unique capability of being able to generate lithium chloride tracer washout test simulations using their software. Tracer washout testing can be an expensive and time consuming method of performance testing in the field. Vaughan Co.’s computer models have proven to be over 97% accurate when evaluated against actual field test results, providing additional peace of mind to the customer that they are receiving the best and most effective mixing solution for their process.

Other Geometries

Rectangular Tanks

retangular cfd

Rectangular tanks usually require additional mixing energy depending on the sludge rheology in each application.

 

Egg-Shaped Digesters

egg shaped cfdIn spite of their volume and height, egg-shaped digesters can be very effectively mixed across all levels by Rotamix.

Our Company

As the sole authorised distributor of Vaughan® Chopper Pumps and Rotamix® Process Mixing Systems in Australia and New Zealand, Pump Systems provides expert solutions for the most challenging pumping and mixing problems.

Member of:

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SolidTalk Blog
Floor Washing System

Floor Washing System for Settled Solids and Grit

March 10, 2016
Changi Digester

Massive new deep cone digester in Singapore to use Vaughan Rotamix

August 6, 2014
portable engine

Vaughan Co. release new portable engine driven chopper pump

April 11, 2014
Featured Projects
Vaughan chopper pump for large food processor

Vaughan chopper pump takes care of stringy bean waste and vines for large food processor

Rotamix nozzle mixing systems

Rotamix nozzle mixing systems installed on new sludge tanks at Tahuna WWTP

Vaughan vertical recirculator chopper pump

Vaughan vertical recirculator chopper pump stands test of time at Green Island WWTP

Get In Touch

Pump Systems Ltd
1 McKechnie Street, Geraldine
Canterbury 7930, New Zealand

AUSTRALIA – Ph: 1800 121 452
NEW ZEALAND – Ph: 0800 609 060
INTERNATIONAL – Ph: +64 3 352 4180

  • sales@chopperpumps.com.au
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