Simultaneous free-surface profilometry and subsurface velocimetry with fringe projection and PIV
Ali Semati, Adharsh Shankaran, Benjamin K. Smeltzer, Eirik Æsøy, R. Jason Hearst, Simen Å. Ellingsen · 2026
Read Simultaneous free-surface profilometry and subsurface velocimetry with fringe projection and PIV by Ali Semati, Adharsh Shankaran, Benjamin K. Smeltzer, Eirik Æsøy, R. Jason Hearst, Simen Å. Ellingsen (2026) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/PMC13415382.txt.
Description
Ali Semati and colleagues merge two optical methods to watch a water surface and the flow beneath it at once, in a 2026 methods study. Fringe projection needs an opaque surface to read its shape, while particle imaging needs clear water to see motion below. A dye solves the clash: fluorescein makes water opaque to blue surface light yet nearly clear to the green laser below.
Three filters kept fluorescence glare and reflections out of each camera view. Surface height error averaged eighteen micrometers at a moderate dye level, checked against a laser reference method. Particle tracking stayed strong up to higher dye levels. Demonstrations covered flow past a cylinder and droplets striking still water.
Catalog record
| CREATOR | Ali Semati, Adharsh Shankaran, Benjamin K. Smeltzer, Eirik Æsøy, R. Jason Hearst, Simen Å. Ellingsen |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 102 KB |
| LICENSE | https://creativecommons.org/licenses/by/4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |