laser doppler velocimetry – Explore the possibilities of Fluid Mechanics Research

Beam Quality Requirements for LDV and PDPA Laser Beams

How do I know if my Laser Doppler Velocimetry (LDV) or Phase Doppler Particle Analysis (PDPA) transmitting optics are forming a good measurement volume? What am I looking for? These are good questions. In order to achieve high-quality and accurate LDV and PDPA measurements, we want the best quality laser beams as possible. Commonly, weContinue reading “Beam Quality Requirements for LDV and PDPA Laser Beams”

How to Set the Bandpass and Downmix Frequencies for Laser Doppler Velocimetry

When using laser Doppler velocimetry (LDV), the bandpass filter and the downmix frequency within the signal processor should be set appropriately in order to both adequately capture the signal of interest as well as to achieve the best resolution. To this end, the final goal is to have the narrowest Band Pass filter possible forContinue reading “How to Set the Bandpass and Downmix Frequencies for Laser Doppler Velocimetry”