particle trajectory (VIDEO) Washington University in St. Louis This video is under embargo. Please login to access this video. Caption This figure depicts the particle trajectory inside the cyclone sampler during air sampling. The Washington University team used computational fluid dynamics (CFD) simulations to gain insight into the size-dependent collection efficiency of aerosols inside the wet cyclone. Credit Joseph Puthussery Usage Restrictions no restriction License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.