FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2529935923> ?p ?o ?g. }

• W2529935923 abstract "Optical diagnostics are remote non-intrusive sensing techniques. The thesis work concerns the use of OH and soot optical diagnostics for combustion research.Internal combustion (IC) engines are widely used for the generation of power and for transportation purposes. Soot emission, involving carbon particles that emanate from the combustion process, is one of major sources of pollutants in engine exhaust. Such particles can be inhaled into human lungs and have been found to be harmful to public health. For this reason, soot emissions from IC engines are strictly regulated. The flame lift-off length (LOL) of a diesel jet, which is the distance between the nozzle of the injector and the base of the flame, affects both diesel combustion and emission formation. The presence of OH radicals has been used commonly for determining LOL. Both the 2D imaging of OH* chemiluminescence and OH-laser-induced fluorescence (LIF) were employed here for determining the LOL of diesel spray flame. Laser extinction measurements (LEM), together with measurements of the natural luminosity (NL) of sooty flames and of laser-induced incandescence (LII) were made use of for in-cylinder soot detection in the thesis. The main goal in the use of optical diagnostics in engines was to answer various engine-related questions. The optical techniques and the data processing methods employed in the thesis work were also improved parallel to one another. The online/offline OH* chemiluminescence method that was used was able to successfully reduce part of the soot luminosity of the OH* chemiluminescence image obtained. A comparison of LOL results obtained on the basis of simultaneous OH* chemiluminescence and OH-LIF images was carried out. The OH-LIF resulted statistically in longer LOL than the OH*chemiluminescence results did. This can be partially explained by the difference between the two methods in the probing volumes and the flame asymmetry. A data correction for the LEM results was developed, one that helped to reduce the effects of the fluctuations in the probing laser intensities and the soot deposits on the optical window. Simultaneous OH-PLIF and soot-LII was performed for studying the soot oxidation process in the recirculation zone of a diesel optical engine. In addition to the optical diagnostics applied to the optical engines that were studied, simultaneous dual species PLIF techniques were developed and made use of in the thesis work. Splitting the beam from the multi-YAG laser into two, the one used to pump OPO and the other used directly for formaldehyde (CH2O) excitation, made the simultaneous probing of two species at a high repetition rate possible. Simultaneous OH and CH2O-PLIF was performed for demonstrations at a repetition rate of 50 kHz. The Frequency Recognition Algorithm for Multiple Exposure (FRAME) approach was also introduced. Through the use of structured illumination, FRAME permits several laser-induced signals to be superimposed upon a single detector." @default.
• W2529935923 created "2016-10-21" @default.
• W2529935923 creator A5011243960 @default.
• W2529935923 date "2016-01-01" @default.
• W2529935923 modified "2023-09-22" @default.
• W2529935923 title "OH and Soot Optical Diagnostics for Combustion Applications for Combustion Applications" @default.
• W2529935923 hasPublicationYear "2016" @default.
• W2529935923 type Work @default.
• W2529935923 sameAs 2529935923 @default.
• W2529935923 citedByCount "0" @default.
• W2529935923 crossrefType "dissertation" @default.
• W2529935923 hasAuthorship W2529935923A5011243960 @default.
• W2529935923 hasConcept C105923489 @default.
• W2529935923 hasConcept C127413603 @default.
• W2529935923 hasConcept C138171918 @default.
• W2529935923 hasConcept C145802702 @default.
• W2529935923 hasConcept C171146098 @default.
• W2529935923 hasConcept C178790620 @default.
• W2529935923 hasConcept C185592680 @default.
• W2529935923 hasConcept C192562407 @default.
• W2529935923 hasConcept C24245907 @default.
• W2529935923 hasConcept C2775925408 @default.
• W2529935923 hasConcept C2780804531 @default.
• W2529935923 hasConcept C3432839 @default.
• W2529935923 hasConcept C49249380 @default.
• W2529935923 hasConceptScore W2529935923C105923489 @default.
• W2529935923 hasConceptScore W2529935923C127413603 @default.
• W2529935923 hasConceptScore W2529935923C138171918 @default.
• W2529935923 hasConceptScore W2529935923C145802702 @default.
• W2529935923 hasConceptScore W2529935923C171146098 @default.
• W2529935923 hasConceptScore W2529935923C178790620 @default.
• W2529935923 hasConceptScore W2529935923C185592680 @default.
• W2529935923 hasConceptScore W2529935923C192562407 @default.
• W2529935923 hasConceptScore W2529935923C24245907 @default.
• W2529935923 hasConceptScore W2529935923C2775925408 @default.
• W2529935923 hasConceptScore W2529935923C2780804531 @default.
• W2529935923 hasConceptScore W2529935923C3432839 @default.
• W2529935923 hasConceptScore W2529935923C49249380 @default.
• W2529935923 hasLocation W25299359231 @default.
• W2529935923 hasOpenAccess W2529935923 @default.
• W2529935923 hasPrimaryLocation W25299359231 @default.
• W2529935923 hasRelatedWork W1773480530 @default.
• W2529935923 hasRelatedWork W1793990623 @default.
• W2529935923 hasRelatedWork W1901183833 @default.
• W2529935923 hasRelatedWork W1982071614 @default.
• W2529935923 hasRelatedWork W2022095052 @default.
• W2529935923 hasRelatedWork W2037923774 @default.
• W2529935923 hasRelatedWork W2072235434 @default.
• W2529935923 hasRelatedWork W2260430979 @default.
• W2529935923 hasRelatedWork W2270101620 @default.
• W2529935923 hasRelatedWork W2318610796 @default.
• W2529935923 hasRelatedWork W2360961766 @default.
• W2529935923 hasRelatedWork W2795134217 @default.
• W2529935923 hasRelatedWork W2797363085 @default.
• W2529935923 hasRelatedWork W2940745478 @default.
• W2529935923 hasRelatedWork W298761072 @default.
• W2529935923 hasRelatedWork W3046501562 @default.
• W2529935923 hasRelatedWork W3088243711 @default.
• W2529935923 hasRelatedWork W6950597 @default.
• W2529935923 hasRelatedWork W779882320 @default.
• W2529935923 hasRelatedWork W9035375 @default.
• W2529935923 isParatext "false" @default.
• W2529935923 isRetracted "false" @default.
• W2529935923 magId "2529935923" @default.
• W2529935923 workType "dissertation" @default.