| particle displacement velocimetry [¦pär·dǝ·kǝl di¦plās·mǝnt ´vel·ǝ`sim·ǝ·trē] FLUID MECHANICS A method of flow-field measurement in which a two-dimensional sheet of a flow field seeded with fluorescent particles is illuminated by a pulsed laser and particle displacements are recorded by a camera. |