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Updated: Oct 30, 2025
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High Throughput Analysis of Liquid Droplet Impacts
Published on: March 6, 2020
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A Multiscale Approach for the Numerical Simulation of Turbulent Flows with Droplets.
Juan M Gimenez1,2, Sergio R Idelsohn1,3, Eugenio Oñate1,4
1Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE), Edifici C1 Campus Nord UPC C/ Gran Capità, 08034 Barcelona, Spain.
Archives of Computational Methods in Engineering : State of the Art Reviews
|July 5, 2021
Summary
This study introduces a multiscale simulation method combining a representative volume element (RVE) and Pseudo Direct Numerical Simulation (P-DNS) for water droplets in turbulent airflow. The approach accurately predicts turbulence modulation by airborne droplets.
Area of Science:
- Fluid dynamics
- Computational physics
- Multiscale modeling
Background:
- Simulating dispersed droplets in turbulent flows is computationally challenging.
- Accurate modeling of turbulence modulation by particles is crucial for many engineering applications.
Purpose of the Study:
- To develop a multiscale simulation approach for detailed analysis of water droplets in turbulent airflow.
- To investigate turbulence modulation phenomena caused by dispersed droplets.
- To improve predictions for flows with airborne droplets.
Main Methods:
- A novel representative volume element (RVE) was combined with the Pseudo Direct Numerical Simulation (P-DNS) method.
- A synthetic model was constructed using offline RVE simulations and an alternating digital tree for coarse-scale solutions.
- Numerical experiments covered various volume fractions, particle sizes, and shear forces.
Main Results:
- Quantitative results for statistically stationary turbulent states were obtained.
- The turbulence modulation phenomenon due to droplet presence was analyzed.
- The synthetic model enabled global scale simulations using P-DNS.
Conclusions:
- The developed multiscale approach enhances the prediction accuracy of turbulent flows with airborne droplets.
- The method is particularly effective in conditions where turbulence modulation is significant.
- This provides a robust tool for simulating complex multiphase flows.
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