CFD-grade column

Small scale · Work package b and c

CAD elevation of the CFD-grade column

A rectangular column with a controlled injection sparger where each hole can be operated independently, giving measurements clean and repeatable enough to serve as a validation case for the project’s numerical work.

The facility is designed to investigate bubble-induced turbulence in gas–liquid flows under controlled operating conditions. A transparent test section enables the characterization of bubble dynamics and their interaction with the surrounding liquid phase. High-speed imaging and advanced velocimetry techniques are used to quantify bubble size, shape, trajectories, velocities, and the liquid velocity field. Dedicated data analysis provides turbulence statistics, velocity fluctuations, and bubble–liquid correlations. The facility provides high-resolution experimental data for understanding bubble-induced turbulence and for the development and validation of closure models for Euler–Euler simulations.

Measurement set-up

Diagram of the CFD-grade column: air through a mass flow controller to a manifold feeding each injection needle at the base independently, the top view of the high-speed camera and LED backlight, and what is measured
Open the diagram at full size

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