Simplified Complex Deposition Velocity Calculation

Overview

The GIW VSCALC method is available in FluidFlow version 3.54 as the new default model for predicting maximum deposition limit velocity (Vsm) in slurry transport systems. 

Rather than being a single correlation, GIW VSCALC is a composite method that systematically applies one of several established maximum deposition limit velocity (Vsm) empirical correlations. 

Underlying Correlations

The VSCALC method selects from the following well-known velocity models:

• Wilson – GIW (1979)
  
• Thomas (1979)
  
• Thomas (2015)
  
• Wilson (1992)

These correlations are applied according to predefined rules that relate to the mean particle diameter of the solids in the slurry.

In addition, GIW VSCALC accounts for the impact of Murphian sized particles when determining the maximum deposition limit velocity (Vsm). This enhances the accuracy of hydraulic analysis, ensuring these particles do not cause problems in your slurry transport systems. 

Application Scope

GIW VSCALC is suitable for:

• Coarse slurries (particle sizes > 150 µm)
  
• Fine slurries (particle sizes < 70 µm)
  
• Intermediate particle size ranges
  

This makes the method applicable across a broad range of slurry types used in mining, dredging, mineral processing, and other industries.

Final Thoughts

The GIW VSCALC method brings significant enhancements to slurry modeling by intelligently selecting the most appropriate correlation based on slurry characteristics. It delivers:

• Automated correlation selection tailored to your slurry conditions
  
• Improved accuracy for predicting deposition in both fine and coarse particle systems
  
• Better flow regime prediction, supporting more reliable design and analysis
  
• Broader applicability, enabling modeling of a wide variety of slurry types
  

By integrating empirical insights with adaptive logic, GIW VSCALC ensures more robust and realistic slurry transport simulations.

Coming Soon
The FluidFlow 3.54 Update will be released soon. Stay tuned for this powerful upgrade—designed to make your slurry modeling even more precise and reliable.

For more information about this new feature or early access inquiries, message us at support@fluidflowinfo.com.

References

R. Visintainer, V. Matousek, L. Pullum, A. Sellgren, Slurry Transport Using Centrifugal Pumps, 4th Edition, Springer Nature Switzerland AG 2023.