Analysis of Transient Compressible Gas Jets Using High Speed Schlieren Imaging

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Fältnamn	Indikatorer	Metadata
000		03501naa a2200349 4500
001		oai:research.chalmers.se:d08ee241-f22c-4085-8850-414888571caf
003		SwePub
008		171006s2013 \| \|\|\|\|\|\|\|\|\|\|\|000 \|\|eng\|
024	7	a https://research.chalmers.se/publication/1762652 URI
024	7	a https://doi.org/10.4271/2013-01-08712 DOI
040		a (SwePub)cth
041		a engb eng
042		9 SwePub
072	7	a art2 swepub-publicationtype
072	7	a ref2 swepub-contenttype
100	1	a Johansen, Lars Christian Riis,d 1987u Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)larsch
245	1 0	a Analysis of Transient Compressible Gas Jets Using High Speed Schlieren Imaging
264		c 2013-04-08
264	1	a 400 Commonwealth Drive, Warrendale, PA, United States :b SAE International,c 2013
520		a Transient compressible gas jets, as encountered in direct injection gas fuel engines, have been examined using schlieren visualization. Helium has been injected into air in a pressure chamber to create the jets examined. The structure of the jets is studied from the mean and coefficient of variation of the penetration length, jet width and jet angle. The quantities are calculated by digital image processing of schlieren images captured with a high-speed camera. Injection pressure and chamber pressure have been varied to determine whether they have an effect on the response variables. Design of experiments methods have been used to develop the scheme employed in performing the experiments. The mean normalized penetration length of the jets is found to scale with injection to chamber pressure ratio and is in agreement with a momentum conserving relation given in the literature. The dispersion of the penetration length has been found to be in agreement with a normal distribution. The Turner model for a jet has been found to be in agreement with the observed jets. The jet has been observed to transition to self-similarity within 20 nozzle diameters. The calculated penetration constant Γ has been observed to vary with the pressure ratio and is smaller than previously reported values. The jet angle approaches a constant value for all cases and has also been found to be in approximate agreement with a normal distribution.
650	7	a TEKNIK OCH TEKNOLOGIERx Maskinteknikx Energiteknik0 (SwePub)203042 hsv//swe
650	7	a ENGINEERING AND TECHNOLOGYx Mechanical Engineeringx Energy Engineering0 (SwePub)203042 hsv//eng
650	7	a TEKNIK OCH TEKNOLOGIERx Maskinteknikx Strömningsmekanik och akustik0 (SwePub)203062 hsv//swe
650	7	a ENGINEERING AND TECHNOLOGYx Mechanical Engineeringx Fluid Mechanics and Acoustics0 (SwePub)203062 hsv//eng
650	7	a NATURVETENSKAPx Data- och informationsvetenskapx Datavetenskap0 (SwePub)102012 hsv//swe
650	7	a NATURAL SCIENCESx Computer and Information Sciencesx Computer Sciences0 (SwePub)102012 hsv//eng
700	1	a De Benito Sienes, Eugenio,d 1986u Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)benito
700	1	a Dahlander, Petter,d 1967u Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)dallas
710	2	a Chalmers tekniska högskola4 org
773	0	t SAE Technical Papersd 400 Commonwealth Drive, Warrendale, PA, United States : SAE Internationalg 2q 2x 0148-7191x 2688-3627
856	4 8	u https://research.chalmers.se/publication/176265
856	4 8	u https://doi.org/10.4271/2013-01-0871

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