Focus on Combustion Optical Measurement Solutions

Energy Challenges of Today Developing industries and quickly increasing markets worldwide are continuously demanding an increased primary energy supply, reliable domestic production and flexible public transportation. Even though alternative technologies are a growing market and will gain relevance, conventional power generation from combustion will continue to hold a strong share of the energy mix for the next decades (see „world energy outlook" below). The diversity of fuels for power and heat generation with the stronger impact of renewable sources has been massively extended. Furthermore,...

Optical Measurement Solutions Advanced Combustion Diagnostics Due to their non-intrusive nature, optical diagnostics offer unique capabilities for in-situ multi-parameter reactive flow field measurements even in the harsh environment of practical combustion systems. These can not be achieved using conventional, i.e. non-optical probe techniques. Optical diagnostics contribute significantly to the reduction of combustion generated pollution, particularly the greenhouse gases CO2, CH4 and H2O. LaVision‘s Expertise LaVision has over 25 years of expertise and experience in the field of combustion...

Imaging and Absorption Techniques The realization of efficient and optimal combustion systems requires in-situ measurements and detailed understanding of complex gas dynamical processes. Laser imaging techniques such as Laser Induced Fluorescence (LIF), Laser Induced Incandescence (LII), Particle Image Velocimetry (PIV), Mie- and Rayleigh Scattering (RS), Spontaneous Raman Scattering (SRS) as well as Emission and Absorption Spectroscopy are well suited for this purpose allowing multi-parameter measurements with high spatial and temporal resolution in technical combustion systems. LIF imaging=...

Flame Characterization CH-PLIF Soot Formation Rayleigh Thermometry Flow Field

Resolving Mixing Processes Liquid and Gaseous Fuel Distribution Driven by the continuous demand for increased fuel efficiency and improved performance the design of combustion devices requires detailed knowledge about the fuel preparation and mixing processes. A thorough analysis necessitates the use of advanced diagnostic tools which have to be capable of resolving the liquid and gaseous fuel distribution in a harsh environment sustaining highly transient flow and transport phenomena. Researchers and industries rely on the imaging systems from LaVision that enable versatile diagnostic applications:...

Insight into Reaction Chemistry Energy Transformation LaVision offers diagnostic solutions for the detection of reactive species. These systems can characterize the conditions inside the reaction zone of laminar and turbulent flames. The location of initial flame kernels and precursor species is identified via species selective detection of the chemiluminescence. Advanced diagnostics such as LIF enable instantaneous 2D imaging of important intermediate species in reaction kinetics like H2CO, CH and OH. LaVision’s diagnostic tools furthermore utilize processes like spontaneous Raman scattering...

Analysis of Pollutant Formation In-situ Imaging of Pollutants Combustion research must face the challenges of future legislation. A thorough understanding of reaction chemistry for the related post-combustion processes and the mechanisms of flame quenching is essential to reduce pollutant emissions. LaVision offers laser based techniques that are able to resolve the distribution of prominent pollutants like NO, CO or SO2 as well as particulate matter. Self-emission of a sooting flame is utilized to determine particle temperatures applying pyrometry. Advanced diagnostics like Laser Induced Incandescence...

A Global View on Combustion Besides the insight into the details of reaction kinetics in combustion it is the integral view that contributes to the understanding on important features like ignition, flame structure and stability. LaVision is offering this global view on combustion via infrared (IR) imaging of the major relevant species, such as CO2, H20 and hydrocarbon based fuels. Furthermore, IR imaging introduces the capabilities of thermal imaging and active IR absorption. By providing IR technology to the scientific community and industrial partners, LaVision maintains the same system integration...

Laser Imaging in Flames FlameMaster Systems Modular and Upgradable Laser Imaging Solutions for Combustion Research LaVision’s FlameMaster laser imaging systems are designed for multi-parameter measurements with high spatial and temporal resolution in flames. The systems provide in-situ and online flame imaging as well as quantitative information about species (particle) concentration, gas composition and flame temperature. FlameMaster Multifunctional system supporting the following flame imaging applications: FlameMaster Application Matrix OH-LIF with T-YAGTM Temperature with Rayleigh The FlameMaster...

Laser Imaging in Flames FlameMaster Systems FlameMaster Raman LaVision’s FlameMaster Raman system measures simultaneously all major species concentrations together with flame temperature along a line focus (1D). Scanning the line focus through the flame generates 2D or even 3D views of the flame composition. % CO2 Raman imaging setup system setup for flame species and radicals. For the detection of all LIF-active diatomic flame species such as OH, NO, CH, CN, CO a dye laser is added to the multifunctional FlameMaster system. The precise dye-laser wavelength tuning for the selected diatomic molecule...

High-Speed Combustion Imaging Time-resolved (Laser) Imaging Most mixing and combustion phenomena are highly turbulent processes where diagnostic tools require high spatial and temporal resolution. Truly time-resolved laser imaging requires repetition rates in the kHz-range to visualize the development of unsteady or statistical phenomena such as flame vibrations. These diagnostic tools have become available with the development of powerful laser sources and sensitive detection units, like intensified CMOS cameras. 4modular image intensifiers: The modular design adds UV-sensitivity and short exposure...