Dantec Dynamics

Dantec Dynamics develops measurement systems for diagnostics and research in
fluid and solid mechanics, microfluidics, spray analysis and combustion technology.

[Dantec Dynamics @dantec_dynamics]

Season's Greetings to all our friends, customers and partners!
This is our last post on Twitter. Thanks for following us! Please follow us on LinkedIn going forward:
https://t.co/A5a81lKaqn

[Dantec Dynamics @dantec_dynamics]

We launched our Volumetric Velocimetry system in 2009 at the International Symposium on Particle Image Velocimetry in Melbourne. It included telecentric lenses and highspeed cameras and used Least Squares Matching as the processing method.
Read more ▶https://t.co/MF0hqk9Xco

[Dantec Dynamics @dantec_dynamics]

We delivered our first Towing Tank Stereo PIV system in 2004 to MARIN and Sirehna, for 3D flow measurements around ship models, providing experimental data for validation of CFD (Computational Fluid Dynamics) models.
#ParticleImageVelocimetry #FluidDynamics #Turbulence

[Dantec Dynamics @dantec_dynamics]

In the beginning of this Millenium, Time-Resolved (TR) PIV with kHz acquisition rate emerged thanks to technological progress. TR PIV provided experimental results for validating Computational Fluid Dynamics (CFD) codes.
#FluidDynamics #ParticleImageVelocimetry #Turbulence

[Dantec Dynamics @dantec_dynamics]

The first commercial Stereo PIV system was introduced in 1998. It made it possible to measure all three velocity components in a plane, using two cameras with overlapping fields of view. The measurement plane no longer needed to be parallel to the flow.
#ParticleImageVelocimetry

[Dantec Dynamics @dantec_dynamics]

The first commercial #TowingTank #PIV system was delivered in 1997. New, compact pulsed Nd:YAG lasers made it possible to integrate the laser, light sheet optics and camera in a sealed casing that could be entirely submerged or mounted on a towing carriage.
#FluidDynamics

[Dantec Dynamics @dantec_dynamics]

FlowMap, introduced in 1994, was the first commercial digital Particle Image Velocimetry (PIV) system. Previously, typically one image per day was recorded with wet film PIV. With digital PIV, the measurement rate exploded to 10 image pairs per second!
#ParticleImageVelocimetry

[Dantec Dynamics @dantec_dynamics]

FlowLite was introduced in the late 1990's. It was a turn-key fiber-optical LDA probe connected to a box containing a Helium-Neon laser, beamsplitter and frequency shifting optics and the fiber-optical connection to the probe. Later, models with 2 lasers were introduced.

[Dantec Dynamics @dantec_dynamics]

The FiberFlow optics revolutionized LDA when it was launched in 1988. It was compact and easy to set up for 1, 2 or 3 velocity components. Its watertight, lightweight probes were easily moved around without needing a massive traversing mechanism.

[Dantec Dynamics @dantec_dynamics]

We're exhibiting at the APS-DFD 2022. Visit us at booth 200 to learn about our latest innovations
Read more about us ▶ https://t.co/w7a5oBnYsu

[Dantec Dynamics @dantec_dynamics]

The Burst Spectrum Analyzer (BSA) launched in 1987 was a major breakthrough for Laser Doppler Anemometry. Its FFT-based signal processing was much more robust than what was previously available.
Read about today's 3rd generation BSA ▶ https://t.co/bq4k9PDP2c

[Dantec Dynamics @dantec_dynamics]

We proudly launch a major new version of DynamicStudio with an updated user interface, data format optimized for fast processing, and a global coordinate system to simplify PIV, LIF, Shadow and flow visualization techniques.
Read more ▶ https://t.co/B37oo8q13c

[Dantec Dynamics @dantec_dynamics]

The first commercial fiber optical Laser Doppler Anemometer, the FOLDA, was introduced in 1987. Optical fibers could now transport laser light through a flexible connection to a compact probe.
Read more about LDA ▶https://t.co/xZObHvBuZr

[Dantec Dynamics @dantec_dynamics]

In 1987 a new technique for measuring droplet size and velocity, Phase Doppler Anemometry (PDA), emerged.
The first generation was big, heavy and difficult to align with separate optics for each photomultiplier.
Read about today's PDA systems ▶ https://t.co/b4t8r4byhj

[Rafael Tinoco @rafaelotinoco]

The perfect fluid mechanics lab doesn't exi...
https://t.co/JvhIKFLhEL

[Dantec Dynamics @dantec_dynamics]

In 1978, the first towing tank LDA system was delivered to HSVA, the Hamburg Test Basin. The system was designed for 3D measurements around the propeller of a ship model. Shown on a small alignment basin.
Read about today's towing tank LDA systems ➡ https://t.co/TZqhKocywZ

[NationalWindTunnels @NWTF_UK]

The Environmental Flow (EnFlo) facility @UniOfSurrey simulates air and pollution flow through cities enabling the development of safe urban environments. Research is utilised internationally. Thank you @EnFlo_lab team. Short film can be found here: https://t.co/qMgNuPIuSI

[Dantec Dynamics @dantec_dynamics]

In the late 1970s, the 3rd gen LDA was launched: modular 1D, 2D or 3D optics, water-cooled Ar-Ion laser, Counter processors, traverse and a PDP-11 minicomputer to control the traverse, data acquisition and presentation of results.
Read more about LDA➡ https://t.co/XP240Gpx3q

[Dantec Dynamics @dantec_dynamics]

History post #12:
Laser Doppler Anemometry (LDA) was invented in the early 1960s. The B/W picture shows Mr. Brian Moss in his lab at Harwell with an LDA experiment. The first commercial LDA system DISA 55L LDA System Mark I, was launched in 1971.
#LaserDoppler #FluidDynamics

[D-MAVT, ETH Zurich @eth_dmavt]

New event format: "Fluid Mechanics Tour of the Alps" with Prof. Detlef Lohse. This takes place once a semester, for the first time on Friday, October 14, 2022 from 14:15 in HG E 3, followed by an apéro in the CLA Glass Hall.