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Updated: Dec 13, 2025
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Three-dimensional Particle Tracking Velocimetry for Turbulence Applications: Case of a Jet Flow
Published on: February 27, 2016
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The effect of turbulence on transitional flow in the FDA's benchmark nozzle model using large-eddy simulation
Emily L Manchester1, Xiao Yun Xu1
1Department of Chemical Engineering, Imperial College London, London, UK.
Summary
Large-eddy simulations accurately model transitional flow in the FDA benchmark nozzle. Results highlight the importance of including turbulence for precise shear stress calculations, crucial for fluid dynamics.
Area of Science:
- Fluid Dynamics
- Computational Science
Background:
- Extensive research exists on the FDA benchmark nozzle model, yet transitional flow cases remain unresolved.
- Previous studies focused on validating numerical models against experimental data, with limited focus on turbulence quantities.
Purpose of the Study:
- To conduct large-eddy simulations (LES) of flow through the FDA benchmark nozzle at a transitional Reynolds number (Re=2000).
- To compare LES predictions with experimental data, emphasizing turbulence characteristics.
- To address the gap in detailed comparisons of predicted turbulence quantities.
Main Methods:
- Large-eddy simulations (LES) were performed for flow through the FDA benchmark nozzle.
- Numerical results were compared against interlaboratory experimental data.
- Focus was placed on detailed analysis of turbulence characteristics and shear stresses.
Main Results:
- LES accurately captured laminar flow quantities.
- Predicted turbulence quantities in the pre-jet breakdown region were higher than experimental data.
- Reynolds shear stresses in jet breakdown regions showed excellent agreement with experimental data.
- Viscous shear stresses peaked in the nozzle throat, while Reynolds shear stresses peaked in the jet breakdown region.
Conclusions:
- LES is a viable method for accurately simulating transitional flow in the FDA benchmark nozzle.
- Both laminar and turbulent contributions to shear stress are critical for accurate fluid force calculations.
- Neglecting turbulence can lead to significant underestimation of total shear force.
Keywords:
Reynolds stresscomputational fluid dynamicshemodynamicslarge-eddy simulationmedical deviceturbulenceMore Related Videos
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