RapidPIV: Full Flow-Field kHz PIV for Real-Time Display and Control
Fuente:
arXiv
Salvato in:
| Autori principali: | , , |
|---|---|
| Natura: | Preprint |
| Pubblicazione: |
2025
|
| Soggetti: | |
| Accesso online: | |
| Tags: |
Aggiungi Tag
Nessun Tag, puoi essere il primo ad aggiungerne!!
|
| _version_ | 1866916707414573056 |
|---|---|
| author | Bollt, Scott A. Foxman, Samuel H. Gharib, Morteza |
| author_facet | Bollt, Scott A. Foxman, Samuel H. Gharib, Morteza |
| contents | We present a novel architecture for accelerating PIV calculations. An optical flow hardware accelerator does the brunt of the work, with cross-correlation only providing quick corrections. The result is RapidPIV: a free-to-download software program for real-time particle image velocimetry (PIV) for Linux and Windows computers with an Nvidia Turing-gen (or newer) GPU (RapidPIV download at https://rapidpiv.caltech.edu). Dense vector fields and vorticity can be displayed in real time when connected to compatible camera. Processing pre-existing PIV image files is also supported. We achieve 1,150 frames-per-second on 1 megapixel images. Accuracy, repeatability, and robustness are tested with physical experiments involving an accelerated flat plate and a cylinder wake. RapidPIV's accuracy, precision and ability to handle high displacement, velocity gradients, out-of-plane motion, and low seeding density compare favorably with the trusted multi-grid correlation software. However, RapidPIV is a thousand times faster. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_17987 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | RapidPIV: Full Flow-Field kHz PIV for Real-Time Display and Control Bollt, Scott A. Foxman, Samuel H. Gharib, Morteza Fluid Dynamics We present a novel architecture for accelerating PIV calculations. An optical flow hardware accelerator does the brunt of the work, with cross-correlation only providing quick corrections. The result is RapidPIV: a free-to-download software program for real-time particle image velocimetry (PIV) for Linux and Windows computers with an Nvidia Turing-gen (or newer) GPU (RapidPIV download at https://rapidpiv.caltech.edu). Dense vector fields and vorticity can be displayed in real time when connected to compatible camera. Processing pre-existing PIV image files is also supported. We achieve 1,150 frames-per-second on 1 megapixel images. Accuracy, repeatability, and robustness are tested with physical experiments involving an accelerated flat plate and a cylinder wake. RapidPIV's accuracy, precision and ability to handle high displacement, velocity gradients, out-of-plane motion, and low seeding density compare favorably with the trusted multi-grid correlation software. However, RapidPIV is a thousand times faster. |
| title | RapidPIV: Full Flow-Field kHz PIV for Real-Time Display and Control |
| topic | Fluid Dynamics |
| url | https://arxiv.org/abs/2504.17987 |