The quality of a PIV measurement is defined by how well the particles follow the flow. Selecting the right tracer material and generation method is critical—not just for aerodynamic fidelity, but for the safety of your facility and the optical quality of your images.
Selecting the correct seeding material is a trade-off between flow fidelity (how well the particle follows the fluid) and scattered light intensity (how well the camera sees it). We categorize our solutions based on the medium and the specific environmental constraints of your facility.
Monitoring seeding density:
Too few particles lead to vector dropouts; too many result in speckle noise and oversaturation. Maintaining this balance manually during long wind tunnel runs or complex experiments is tedious and prone to error. Our Seeding Sensor is the intelligent solution for perfect flow illumination. It continuously monitors the seeding density inside your facility and acts as the central controller for your particle generation system.
Selecting the correct seeding material is a trade-off between flow fidelity (how well the particle follows the fluid) and scattered light intensity (how well the camera sees it). We categorize our solutions based on the medium and the specific environmental constraints of your facility.
- Air and Gas Flows (Aerodynamics): In gaseous flows, density differences between the fluid and the particle are high. To minimize slip and accurately trace turbulence, particles must remain small, typically around 1 µm in diameter.
- High-Temperature & Combustion: Liquid droplets evaporate instantly in flames or hot exhausts. These applications require solid particles such as Titanium Dioxide or Silicon Dioxide. Our fluidized bed generators are specifically designed to disperse these powders dryly and consistently without agglomeration.
- Hydrodynamics (Water Flows): Because water is significantly denser than air, it can support larger particles without inducing slip. Consequently, seeding for water tunnels typically starts at 5 µm, allowing for stronger light scattering signals.
Monitoring seeding density:
Too few particles lead to vector dropouts; too many result in speckle noise and oversaturation. Maintaining this balance manually during long wind tunnel runs or complex experiments is tedious and prone to error. Our Seeding Sensor is the intelligent solution for perfect flow illumination. It continuously monitors the seeding density inside your facility and acts as the central controller for your particle generation system.
