Fluid Flow Visualization Systems

LaVision Intelligent Imaging and Smart Optical Sensors

LaVision was founded in 1989 as a spin-off from the Max Planck Institute and the Laser Laboratory in Goettingen, Germany. The primary mission of the company is to provide integrated (Laser) Imaging Systems to the scientific and industrial markets. To this end LaVision is involved in an ongoing process of innovation and development of imaging detectors, spectroscopy, lasers, measurement technologies and software tools.

LaVision collaborates with leading scientists, research institutions and companies around the globe. Among the major partners are: Laser Laboratory Goettingen, University of Aachen (RWTH), German Aerospace Center (DLR) and University of Michigan, Ann Arbor.

LaVision’s product range comprises:

  • modular laser imaging systems based on spectroscopic techniques for multi-parameter and multi-dimensional flow field measurements for combustion, spray and flow visualization
  • imaging systems for remote and precise surface deformation and strain inspection
  • software integrated advanced camera systems
  • fiber optical sensor systems

The LaVision team has extensive professional experience in imaging spectroscopy and optical techniques such as Laser Induced Fluorescence (LIF), Raman, Rayleigh and Mie Scattering, Particle Image Velocimetry (PIV), Spray Analysis, image correlation techniques as well as ultra fast time-resolved imaging and high-speed image recording.

The company is customer focussed and offers high quality products that are user-friendly, reliable and application specific. LaVision guarantees system performance, friendly and attentive customer support, competent and experienced employees and, ultimately, customer satisfaction.

Apllied Research

The LaVision family of laser imaging systems builds up a complete multi-technique framework for quantitative visualization of reactive and non-reactive flow fields. Multi-Parameter measurements (velocity, species concentration, composition, temperature, particle sizing) are possible using multi-technique approaches.

applications

FlowMaster

FlowMaster

PIV / PTV-systems

flowMaster_2The LaVision FlowMaster system family evaluates three-dimensional velocity vector fields from scattered light patterns of particles or droplets seeded into the flow (liquid or gas). Techniques like Particle Image Velocimetry (PIV) and Particle Tracking Velocimetry (PTV) are supported. LaVision’s FlowMaster camera systems can record two successive images within min. time <100 ns for ultrafast cross-correlation and speeds up to Mach 4. The PIV cameras offer highest sensitivity and allow the use of very small particles (or droplets). An image field of up to 29 million pixels combined with up to 14 bit dynamic range gives an unsurpassed spatial resolution. Programmable precise timing sequences in combination with flexible and speedy software evaluation complete the package.

Applications

  • liquid and gas flow investigations in wind tunels, water channels, in-cylinder engines industrial flow systems, compressors, turbines, fans, pumps, Micro Electro Mechanical Systems (MEMS)

Information

  • velocity fields (strain, vorticity etc.)
  • flow visualization

System Features

  • self-calibration for 3D stereoscopic PIV eliminates calibration errors
  • beam delivery. articulated arms, compact sheet optics
  • particle seeder
  • general purpose synchronization device
  • online data storage, real-time data recording for many hours
  • data analysis on CPU and GPU
  • distributed computing on network PCs

Specials

  • underwater PIV setup for towing tanks with smart optical access
  • in-cylinder flow analysis with laser and camera endoscopes

 Download FlowMaster Brochure

SprayMaster

SprayMaster

SprayMasterLaVision’s SprayMaster is a complete family of optical measurement systems designed for non-intrusive analysis of spray processes in many fields. Various applications require different system approaches: LaVision is offering predefined systems (see overview) and special customized systems to achieve the application-specific performance. The systems are easy to operate, fast and efficient measurement tools for R&D as well as quality control.

Applications

  • imaging of sprays and related processes:
    fuel injectors, spray coating and drying processes
    pharmaceutical, medical and paint sprays
  • spray patternation
  • cone angle
  • mass distribution
  • Sauter Mean Diameter D32
  • evaporation

System Features

  • integrated and modular spray imaging systems based on
    application matched best selection of light source and
    camera system
  • complete hardware control using DaVis software
  • accurate hardware and signal calibration
  • robust system designs for industrial spray inspection applications
  • customized test protocols

Specials

  • fiber optics light delivery systems
  • simultaneous multi-parameter spray imaging:
    droplet size, temperature, velocity and phase information

Imaging Techniques
Mie, LIF, PIV, Shadow, IMI

Download SprayMaster Brochure

FlameMaster

FlameMaster

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LaVision’s FlameMaster system family is designed to help the scientific and engineering community to find new concepts for the realization of more efficient and cleaner combustion devices.

These modular laser imaging systems for quantitative combustion visualization are based on the following

Applications
investigation of combustion phenomena in:
flames, burners, jet engines, furnaces
propulsion systems, chemical reactors, shock tubes

Information

  • fuel LIF imaging, air-fuel mixing
  • flame front visualization
  • flame radical distributions (OH, NO, CH …)
  • flame structure and stability
  • flame and soot temperature
  • soot concentration and size of primary soot particles

System Features

  • integrated turnkey laser imaging systems based on application matched best selection of laser and camera
  • complete hardware control using DaVis software
  • accurate hardware and signal calibration
  • flexible beam delivery and sheet forming optics
  • laser sheet correction incl. local laser beam absorption compensation
  • most efficient LIF excitation technique for each application and flame radical
  • spectroscopic data base and background literature
  • combination of techniques, multi-parameter laser imaging

Specials

  • endoscopes for keyhole imaging
  • high speed LIF systems
  • soot imaging with in-situ calibration
  • fast shutter and high speed imaging pyrometers
  • volume scanning for 3D information
  • tunable Nd:YAG laser module for OH-LIF imaging
  • high speed spectral analysis of transient processes
  • imaging stereoscopes
  • calibration burners

Imaging Techniques
LIF, LII, Raman, Rayleigh, Emission Spectroscopy

Download FlameMaster Brochure

EngineMaster

EngineMaster

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Multi-functional laser imaging systems investigating all stages of internal combustion processes like fuel injection, air-fuel mixture formation, ignition, combustion and pollutant formation.

Applications
all kind of internal combustion phenomena:
fuel injection, air-fuel mixture preparation
in-cylinder temperature fields, ignition and flame propagation, pollutant and soot formation

Information

  • liquid and vapor fuel concentration fields
  • local air/fuel ratios (lambda-maps)
  • in-cylinder temperature during mixture formation
  • localisation of knock centers
  • flame front propagation
  • combustion species concentration (OH, NO, CH …)
  • soot concentration and primary soot particle size

System Features

  • integrated turnkey laser imaging systems based on application matched best selection of laser and camera
  • complete hardware control using DaVis software
  • accurate hardware and signal calibration
  • predefined crank angle resolved measurements with cycle statistics
  • multi-functional engine synchronization interface:
    crank angle decoder, engine simulator, trigger conditioner

Specials

  • endoscopes for keyhole imaging
  • high speed digital film recording of complete cycles
  • high speed imaging pyrometers
  • EngineMaster Sychronizer for injection, ignition control and others

Imaging Techniques
LIF, LII, Raman, Rayleigh, Emission Spectroscopy
High Speed Strobe Visualization

Download EngineMaster Brochure

ParticleMaster

ParticleMaster

981_2_ParticleMaster-Shadow

LaVision’s ParticleMaster system family is designed to simultaneously determine size and velocity of individual particles or droplets in fluids or multiphase flows. The imaging systems analyze various types of particle laden fluids and other two-phase flows with high spatial resolution. Data acquisition and on-line evaluation are performed with the versatile DaVis software.

Applications

investigation of droplet or particle size distributions in various applications such as spray atomization, bubbles, particle flows
Information

  • simultaneous size, velocity and position of individual particles
  • velocity-size correlations
  • morphology and shape information
  • mass flux and number density
  • ensemble statistics, frequency plots and histograms
  • visualization of ligament formation, spray break-up and atomization

System Features

  • integrated turnkey particle imaging systems matching optimal selection of illumination and detection devices
  • complete hardware control and timing with versatile DaVis software
  • accurate hardware and size calibration
  • comprehensive on-line image evaluation and data processing
  • most accurate evaluation algorithms
  • hardware compatible with LaVision’s PIV systems

Specials

  • high speed image recording to investigate transient processes
  • high efficient diffuser for speckle-free illumination

Imaging Techniques
Shadowgraphy (backlight illumination)
Interferometric Mie Imaging (IMI)

Download ParticleMaster Brochure

FluidMaster

FluidMaster

fluidmaster_2FluidMaster is a complete laser imaging system family for the quantitative visualization of thermal flows and mixing processes in fluids. Instantaneous concentration and temperature fields are measured with high spatial and temporal resolution.

Applications

investigation of fluid mixing, thermal flows and flow structures, flow visualization in wind tunnels and turbomachinery applications, air film cooling, hydrodynamics.

Information

  • quantitative visualisation of concentration and temperature fields in fluids
  • pH-imaging and degree of reactive mixing in liquids
  • gas density measurements in thermal flows

System Features

  • integrated turnkey laser imaging systems based on application matched best selection of laser and camera
  • complete hardware control using DaVis software
  • accurate hardware and signal calibration
  • most effective LIF excitation techniques
  • Rayleigh thermometry package for thermal gas flows
  • oxygen (O2)-LIF imaging module

Specials

  • 3D-imaging setups
  • time resolved imaging, digital film recording

Imaging Techniques
LIF, Raman, Rayleigh

StrainMaster

StrainMaster

2D/3D DIC

980_2_StrainMaster-portable_2StrainMaster from LaVision is a state-of-the-art, non-intrusive optical tool for shape, deformation and strain analysis of solid, granular and liquid subjects. StrainMaster combines the most advanced Digital Image Correlation (DIC) algorithms with the highest quality hardware to provide a complete and easy to use device for materials analysis.  StrainMaster is applicable across all industries investigating material behaviour and gives fast, highly accurate results via an easy to use PC based interface.

StrainMaster can be supplied as a complete turn-key system or as stand alone software for importing and processing images from an external source such as a Scanning Electron Microscope (SEM). The system offers a complete solution and data management system able to drive hardware, acquire images, process data, validate, and display or export information.
During image acquisition the powerful StrainMaster system is able to command pulsed lighting, automate translation stage movement, record analogue load data and synchronise with external (e.g. cyclic) events. The user is able to set up batch operations for multiple processing steps, and utilise the resources of networked PCs via a distributed processing system; all of which is included as standard.

A range of StrainMaster systems are available from portable field work machines to highly specialised lab versions. Any system can be tailored to suit your particular requirements, and are appropriate for both industrial and academic applications across a range of subject areas.

Several upgrades are available to make the StrainMaster system capable of multi-parameter measurements. For example PIV can be added to measure fluid-structure interaction, by simultaneously measuring structure deformation and airflows.

Download StrainMaster Brochure

DaVis Software

DaVis – The Complete Software for Intelligent Imaging Applications

Titel-cmykDaVis is the complete software for intelligent (laser) imaging applications for non-reactive and reactive flow fields, material surface imaging and tracking and (ultra) high speed imaging.
The software integration of the selected imaging system is achieved with flexible acquisition modes, customized DaVis software interfaces and application specific imaging packages.

DaVis features user selectable acquisition sequences with precise synchronization on ns-time scale of camera exposure, illumination and external event trigger. A huge range of imaging devices are under DaVis control.
The open nature of DaVis in combination with its macro programming language (CL-language) allows a fast adaptation of the imaging system to different measurement tasks ranging from sophisticated research to reliable industrial applications.
Flexible image acquisition modes, advanced image processing algorithms, intelligent storage and presentation of multi-dimensional image data as well as the software controlled operation of all implemented hardware are the key features of DaVis.

DaVis runs under Windows 7 (64 bit) and offers the familiar Windows interactive user interface.  The online help in PDF manuals can be viewed with the preferred browser. LaVision’s in-house software engineers continuously design new algorithms for processing and displaying acquired data and including new camera types, lasers and other hardware devices.

Download DaVis Imaging Software Brochure

Sensor Systems

Sensor Systems

LaVision is offering optical sensor systems for the following applications:

Internal Combustion Optical Sensor (ICOS)Ultra fast crank angle resolved fuel (lambda-value) and exhaust gas concentration measurements in internal combustion engines.

ICOS-Sensor

Phase Doppler Interferometers (PDI) and Laser Doppler Velocimeters (LDV)
droplet size and velocity measurements.PDI_modular_1
Soot Sensor
temporally resolved measurements of particulate matter (soot) concentration and primary particle size.LII_200
Leakage Sensor
trace gas detection for leakage tests.leakage_sensor_2
Temperature Sensor
flame temperature measurements.LTS-Main-1-LOWRES