Dantec Dynamics - Flow Field Diagnostics - Particle Image Velocimetry Solutions - Brochure

FLOW FIELD DIAGNOSTICSParticle Image Velocimetry solutions2Time-Resolved PIV measurement in a turbulent flamePIV is an intuitive measurement technique for measuring twoor three components of velocity in a variety of flows. The application of PIV in research and industry is widespread,due to its ease of use and accurate data representation.As easy and intuitive as PIV is, it involves many cross-discipli-nary challenges, from classical optics and imaging to the useof dedicated state-of-the-art digital electronics and lasers.Partnering with Dantec Dynamics brings you a wide range ofproducts to select from and expert application knowledge toassist in configuring the PIV systems that meet your needs.We offer:• Planar PIV as well as Volumetric Velocimetry• Classical and Time-Resolved PIV solutions• The widest range of CCD, sCMOS and CMOS cameras• Lasers for any application• Advanced timing and analog input devices • Scalable data processing power including PC clusters and GPU solutions• A complete software package meeting all your needs from acquisition to publishing high quality data, visualizations and animationsParticle Image Velocimetry (PIV)3Combining our know-how of fast, accurate synchronization and rapiddigital image capture, we offer complete measurement solutions forPIV applications with all the required elements integrated intoturnkey systems Time-Resolved PIV measurement of wake flow behind a car. Courtesy of PSA, FranceTwo consecutive laser pulses illuminate a slice or volume of aflow field with particles suspended in the flow. The scatteredlight from the particles is recorded in two consecutiveimages on one or several digital cameras. The images are sub-divided into smaller areas for calculatingthe mean particle displacement between two correspondingsub-areas. The particle displacement is calculated using cross-correlationor Least Squares Matching techniques. Since the timebetween the laser pulses is known, the particle velocity canbe determined. Taking into account the magnification of the optical setup,the absolute velocity field can be derived.The velocities calculated from an image pair are an instanta-neous snapshot of the flow viewed by the cameras.PIV results are an accurate representation of the flow pre-sented to the user and viewers in an easy to understand andvisual manner. The presentation is aided by advanced soft-ware post-processing. PIV data for all three velocity components can be presentedvolumetrically. These capabilities have made PIV a popularand yet accurate research tool.FlowSense EO 4M - one out of five models -mounted on a Scheimpflug adapterThe world’s fastest camera - SpeedSense 1610An overview showing the principle of Dantec Dynamics' 2D PIV systems4The world’s highest image quality withHiSense NeoThe Principle of PIVCamera & OpticsParticle ImagesData VisualizationFrame 1Frame 2CorrelationVelocity Field??Double Pulsed LaserCylindricalLens ??FlowLasers for any application• Pulsed lasers from mJ up to several Joule• Continuous wave lasers up to 5+ W• Best match of repetition rate to all CCD, sCMOS and CMOScameras• Rugged design and user-friendlyThe market’s widest range of CCD and sCMOs cameras• High sensitivity, low noise• CCD-Sensors from 1.3 MPixel up to 16+ MPixel• Direct data stream to disk or RAMWide range of CMOS cameras• Up to tens of kHz at full frame size• CMOS-Sensors from 1 MPixel resolution up to 4+ MPixel• Fast dedicated data transferAdvanced analog and synchronization devices• Independent triggers at nanosecond resolution• Analogue sampling up to 2+ GHz• Advanced Waveform AnalysisCustomized PIV solutions• Streamlined probes for water and wind tunnel applications• Fully automated and remote controlled traverse systems• Camera and light sheet endoscopesCustomized Stereoscopic underwater PIV systems for towing tanks. Courtesy of CEHPAR, SpainModular high power light sheet optics mounted on a DualPower laser Camera endoscopes for measurement in areas otherwise difficult toaccess5A Unique Selection of EquipmentDynamicStudio - The Unique PIV Software PlatformVelocity field of a vortex and dv/dxdirectly computed by 2D LSMVelocity field and iso velocitysurfaces calculated by 3D LSMTR-PIV results form a swirling gas burner for turbine engines.Courtesy of Lund University, Sweden3D visualization of ring vortex instability measured by 3D LSM. Courtesy of Technical University Freiberg, Germany 6Key elements that makes our software dynamic• Hardware auto-recognition and interconnection diagram• Ensemble database structure• Distributed acquisition, storage and analysis including GPUsupport• Analysis sequences and batch processing• Unmatched flexibility in auto-processing – works on multiple projects• Batch exportingVolumetric Velocimetry• Unique single camera solutions: Plenoptics camera with volume illumination and scanning light sheet with standard camera• Three different processing methods:Volumetric Particle Tracking Velocimetry, Tomographic PTVand 3D Least Squares Matching• Support for CUDA based GPU boards2D Least Squares Matching• A unique Dantec Dynamics product• Highly increased accuracy in situations with velocity gradients• Direct velocity gradient calculation• No raw image manipulation needed for windows deformationFlexPIV• A unique Dantec Dynamics product• Variable vector calculation in different domains• Closely matches PIV processing nodes to CFD nodes for data comparison• Local refinement of velocity vectorsFlow and geometry adaptive PIV processing with FlexPIVThe intuitive and flexible user interface of DynamicStudio showing several different processing resultsData and analysis method courtesy of Prof. Vaclav Uruba, Institute ofThermomechanics, Prague, Czech Republic7Feature PIV• A unique Lagrangian approach for velocity calculations, based on feature detection and tracking• Vectors are only calculated where features or particles can be detected• Features can be scaled down to single particles• Provides Lagrangian history of particle movementData Visualization• New integrated Visualization module with advanced capabilities • Create publishing quality 2D and 3D graphics and anima-tions from your measured data• No need for third party graphics programs• No exporting and re-importing of data; all data are retained in DynamicStudioOscillating Pattern Decomposition (OPD)• An innovative method for analysis of energy modes in spatio-temporal data• Based on well-proven methods developed for flow pattern prediction in climatology• Uncovers the dynamically dominant mechanisms, while using efficient noise removal by sophisticated POD filtering• dentifies the stability, receptivity and sensitivity of velocity fluctuation modes• Direct applicability in wind engineering• Works with PIV, PLIF, CTA rakes data as well as other spatio-temporally resolved dataf = 98HzAbout Dantec DynamicsWorldwide representationFrom our six offices and more than 30 distributors worldwide weapproach our customers individually. We examine the specific needsand find the best solution for you. For us you are a long-term partnerin improving efficiency, safety and quality of life.A list of representatives is available at our website.DENMARK (headquarters)Dantec Dynamics A/Sinfo@dantecdynamics.comFRANCEDantec Dynamics S.A.S.france@dantecdynamics.comGERMANYDantec Dynamics GmbHgermany@dantecdynamics.comJAPANDantec Dynamics K.K.japan@dantecdynamics.comUNITED KINGDOMDantec Dynamics Ltd.uk@dantecdynamics.comUSADantec Dynamics Inc.usa@dantecdynamics.comwww.dantecdynamics.comFluid MechanicsParticle CharacterizationCombustion DiagnosticsThermal ComfortMicrofluidicsProcess ControlStrain, Stress & VibrationNon-destructive TestingDisatac TachometersDantec Dynamics is the leading provider of laser optical measurement systems and sensorsfor fluid flow characterization and materials testing. Since 1947 we have provided solutionsfor customers to optimize their product and component testing. Dantec Dynamics providesquality solutions for an extensive list of customers in the areas of:The specifications in this document are subject tochange without notice. Dantec Dynamics is trademark of Dantec Dynamics A/S. Publication No.: 268_v4??????????? ?????? ?????????? ??????? ????