FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W825123610> ?p ?o ?g. }

• W825123610 abstract "This work focuses on measurements of soot particle size and volume fraction at Diesel engine conditions. combination of laser-Induced incandescence (LII) imaging, line-Of-Sight laser extinction, soot pyrometry, and transmission electron microscopy (TEM) measurements of thermophoretically-Sampled soot was used. Particle sizing strategies were developed with LII model for the analysis of particle-Size poly-Dispersity with time-Resolved LII signal that is suitable for point-Wise measurements at atmospheric pressure, and for spatially-Resolved characterization with two-Time-Step LII imaging. Measurements were performed with these strategies in a flame at atmospheric pressure and in Diesel engine combustion to investigate their applicability. Additional measurements were performed for temperature and soot volume fraction.A novel method, called two-Exponential reverse fitting (TERF), is introduced to extract information about the size distribution. The method is based on mono-Exponential fits to the LII signal decay at a delayed time. It approximates the particle-Size distribution as a combination of one large and one small mono-Disperse equivalent mean particle size and does not require a distribution assumption. It also provides a ratio of the contribution of both size classes. The systematic error caused by de-Scribing LII signals by mono-Exponential decays was calculated as less than 2% for LII signals simulated for mono-Disperse aggregated soot with heat-Up temperatures for which evaporation is negligible. The method was applied to LII data acquired in a laminar non-Premixed ethylene/air flame at various heights above the burner. The particle size of the large particle-Size class evaluated with the method showed good consistency with TEM results, however the size of the small particle-Size class and its relative contribution could not be compared due to insufficient information in the TEM results for small particles. Simultaneous line-Of-Sight laser extinction measurements and LII imaging were performed to de-Rive the soot volume fraction in a high-Temperature high-Pressure constant-Volume pre-Combustion vessel under the Engine Combustion Network’s (ECN) A conditions with parametric variations of gas temperature and composition. Extinction measurements were used to calibrate LII images for quantitative soot distribution measurements. OH-Chemiluminescence imaging was used to determine the lift-Off length, and used to interpret the soot measurements. Maximum soot volume fractions around 2–3 ppm were obtained at the nominal ambient temperature defined for Spray (i.e. 900 K) that rise to 12 ppm at elevated temperature (1030 K). Variations of ambient temperature and oxygen concentration were carried out showing effects on soot formation and oxidation that are consistent with the literature.The method for particle-Size imaging is based on evaluating gated LII signals acquired with two cameras consecutively after the laser pulse and using LII modeling to deduce particle size from the ratio of local signals. strategy was developed with a model-Based analysis: the dependence of LII particle-Size imaging on the assumed boundary conditions was identified such as bathgas temperature, pressure, particle heat-Up temperature, thermal accommodation coefficients, and soot morphology. Various laser-Fluence regimes and gas pressures were considered. Effects of laser attenuation were evaluated. combination of one detection gate starting with the particle-Heating and the other starting with 11 ns delay with twice as long gate width was found to provide the highest sensitivity for particle sizing at 60 bar. The optimum gate delays for different pressures were calculated. The effects of timing jitter for laser pulse and poly-Dispersity were investigated. Systematic errors in pyrometry imaging at 60 bar was evaluated. [...]" @default.
• W825123610 created "2016-06-24" @default.
• W825123610 creator A5010640287 @default.
• W825123610 date "2015-01-07" @default.
• W825123610 modified "2023-09-23" @default.
• W825123610 title "Imaging measurements of soot particle size and soot volume fraction with laser-induced incandescence at Diesel engine conditions" @default.
• W825123610 cites W2057575951 @default.
• W825123610 cites W2064436760 @default.
• W825123610 hasPublicationYear "2015" @default.
• W825123610 type Work @default.
• W825123610 sameAs 825123610 @default.
• W825123610 citedByCount "1" @default.
• W825123610 countsByYear W8251236102017 @default.
• W825123610 crossrefType "dissertation" @default.
• W825123610 hasAuthorship W825123610A5010640287 @default.
• W825123610 hasConcept C105923489 @default.
• W825123610 hasConcept C111368507 @default.
• W825123610 hasConcept C113196181 @default.
• W825123610 hasConcept C120665830 @default.
• W825123610 hasConcept C121332964 @default.
• W825123610 hasConcept C127313418 @default.
• W825123610 hasConcept C147789679 @default.
• W825123610 hasConcept C159985019 @default.
• W825123610 hasConcept C178790620 @default.
• W825123610 hasConcept C185592680 @default.
• W825123610 hasConcept C187530423 @default.
• W825123610 hasConcept C192562407 @default.
• W825123610 hasConcept C2775925408 @default.
• W825123610 hasConcept C2778517922 @default.
• W825123610 hasConcept C32993116 @default.
• W825123610 hasConcept C43617362 @default.
• W825123610 hasConcept C49249380 @default.
• W825123610 hasConcept C60448018 @default.
• W825123610 hasConcept C65590680 @default.
• W825123610 hasConcept C72293138 @default.
• W825123610 hasConcept C97355855 @default.
• W825123610 hasConceptScore W825123610C105923489 @default.
• W825123610 hasConceptScore W825123610C111368507 @default.
• W825123610 hasConceptScore W825123610C113196181 @default.
• W825123610 hasConceptScore W825123610C120665830 @default.
• W825123610 hasConceptScore W825123610C121332964 @default.
• W825123610 hasConceptScore W825123610C127313418 @default.
• W825123610 hasConceptScore W825123610C147789679 @default.
• W825123610 hasConceptScore W825123610C159985019 @default.
• W825123610 hasConceptScore W825123610C178790620 @default.
• W825123610 hasConceptScore W825123610C185592680 @default.
• W825123610 hasConceptScore W825123610C187530423 @default.
• W825123610 hasConceptScore W825123610C192562407 @default.
• W825123610 hasConceptScore W825123610C2775925408 @default.
• W825123610 hasConceptScore W825123610C2778517922 @default.
• W825123610 hasConceptScore W825123610C32993116 @default.
• W825123610 hasConceptScore W825123610C43617362 @default.
• W825123610 hasConceptScore W825123610C49249380 @default.
• W825123610 hasConceptScore W825123610C60448018 @default.
• W825123610 hasConceptScore W825123610C65590680 @default.
• W825123610 hasConceptScore W825123610C72293138 @default.
• W825123610 hasConceptScore W825123610C97355855 @default.
• W825123610 hasOpenAccess W825123610 @default.
• W825123610 hasRelatedWork W1800713168 @default.
• W825123610 hasRelatedWork W1970986082 @default.
• W825123610 hasRelatedWork W2019788653 @default.
• W825123610 hasRelatedWork W2020036122 @default.
• W825123610 hasRelatedWork W2022807080 @default.
• W825123610 hasRelatedWork W2023802903 @default.
• W825123610 hasRelatedWork W2025291827 @default.
• W825123610 hasRelatedWork W2036041920 @default.
• W825123610 hasRelatedWork W2041020149 @default.
• W825123610 hasRelatedWork W2065643686 @default.
• W825123610 hasRelatedWork W2071906573 @default.
• W825123610 hasRelatedWork W2080164181 @default.
• W825123610 hasRelatedWork W2088282594 @default.
• W825123610 hasRelatedWork W2318610796 @default.
• W825123610 hasRelatedWork W2333555781 @default.
• W825123610 hasRelatedWork W2334831440 @default.
• W825123610 hasRelatedWork W2365197216 @default.
• W825123610 hasRelatedWork W2384510845 @default.
• W825123610 hasRelatedWork W2593476054 @default.
• W825123610 hasRelatedWork W588040510 @default.
• W825123610 isParatext "false" @default.
• W825123610 isRetracted "false" @default.
• W825123610 magId "825123610" @default.
• W825123610 workType "dissertation" @default.