High Speed Particle Image Velocimetry in a Large Engine Prechamber

In this study, state-of-the-art laser-based optical measurement technology is utilized to visualize the flow field inside the prechamber of a large-bore gas engine. High-Speed Particle Image Velocimetry (HS-PIV) has been demonstrated to provide significant insights into the evolution of the prechamber flow field and its characteristics. The measurements provide a comprehensive database for improving modeling approaches and validating 3D-CFD simulations.

Cross-sectional view of the optical prechamber mounted axially on the rapid compression machine, with sight glasses for optical access and sealed at the top by a spark plug sleeve containing an inactive spark plug.

Key Highlights:

First PIV measurements in a series large-bore gas engine sized prechamber
Prechamber flow field characterization and analysis
Key insights for optimizing future engine designs

Why it matters: A clear understanding of prechamber flow conditions is a prerequisite for reliable modeling of mixture formation and combustion in prechamber gas engines. Applying these modeling approaches to “green” and low-carbon fuels supports the development of next-generation high-efficiency, low-emission engines.

Read the full paper here:
High Speed Particle Image Velocimetry in a Large Engine Prechamber | Flow, Turbulence and Combustion

Congratulations to the author team:
Aravind Ramachandran, Rajat Soni, Markus Roßmann, Marc Klawitter, Clemens Gößnitzer, Jakob Woisetschläger, Anton Tilz, Gerhard Pirker & Andreas Wimmer on this outstanding work!
We welcome discussions with researchers, engineers, and all those interested: What techniques do you prefer to create validation data for 3D-CFD simulation?

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