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LIBRIS Formathandbok  (Information om MARC21)

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Fältnamn	Indikatorer	Metadata
000		04682nam a22006373a 4500
001		22200443
003		SE-LIBR
005		20180105064938.0
007		cr||||||||||||
008		180105s2011 sw |||| o |||| ||eng c
024	7	a http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-285802 uri
024	7	a urn:nbn:se:ltu:diva-285802 urn
024	8	a 26a52819-1bc0-4917-8c3c-6fea8e4971f0
040		a S
041	0	a eng
042		9 EPLK
100	1	a Jonsson, Patrick4 aut
111	2	a International Conference on Particle-Based Methods : fundamentals and applications 26/10/2011 - 28/10/2011
245	1 0	a Smoothed particle hydrodynamics modeling of hydraulic jumpsh [Elektronisk resurs]
260		a Barcelonab International Center for Numerical Methods in Engineering (CIMNE)c 2011
500		a Godkänd; 2011; Bibliografisk uppgift: II International Conference on Particle-based Methods – Fundamentals and Applications PARTICLES 2011 E. Oñate and D.R.J. Owen (Eds); 20111212 (ysko)
506	0	a gratis
520		a This study focus on Smoothed Particle Hydrodynamics (SPH) modeling of twodimensional hydraulic jumps in horizontal open channel flows. Insights to the complex dynamics of hydraulic jumps in a generalized test case serves as a knowledgebase for real world applications such as spillway channel flows in hydropower systems. In spillways, the strong energy dissipative mechanism associated with hydraulic jumps is a utilized feature to reduce negative effects of erosion to spillway channel banks and in the old river bed. The SPH-method with its mesh-free Lagrangian formulation and adaptive nature results in a method that handles extremely large deformations and numerous publications using the SPH-method for free-surface flow computations can be found in the literature. Hence, the main objectives with this work are to explore the SPH-methods capabilities to accurately capture the main features of a hydraulic jump and to investigate the influence of the number of particles that represent the system. The geometrical setup consists of an inlet which discharges to a horizontal plane with an attached weir close to the outlet. To investigate the influence of the number of particles that represents the system, three initial interparticle distances were studied, coarse, mid and fine. For all cases it is shown that the SPH-method accurately captures the main features of a hydraulic jump such as the transition between supercritical- and subcritical flow and the dynamics of the highly turbulent roller and the air entrapment process. The latter was captured even though a single phase was modeled only. Comparison of theoretically derived values and numerical results show good agreement for the coarse and mid cases. However, the fine case show oscillating tendencies which might be due to inherent numerical instabilities of the SPH-method or it might show a more physically correct solution. Further validation with experimental results is needed to clarify these issues.
650	7	a Engineering and Technology2 hsv
650	7	a Mechanical Engineering2 hsv
650	7	a Fluid Mechanics and Acoustics2 hsv
650	7	a Teknik och teknologier2 hsv
650	7	a Maskinteknik2 hsv
650	7	a Strömningsmekanik och akustik2 hsv
650	7	a Engineering and Technology2 hsv
650	7	a Mechanical Engineering2 hsv
650	7	a Applied Mechanics2 hsv
650	7	a Teknik och teknologier2 hsv
650	7	a Maskinteknik2 hsv
650	7	a Teknisk mekanik2 hsv
650	7	a Strömningslära2 ltu
650	7	a Fluid Mechanics2 ltu
650	7	a Hållfasthetslära2 ltu
650	7	a Solid Mechanics2 ltu
653	0	a Engineering mechanics - Fluid mechanics
653	0	a hydraulic jump
653	0	a smoothed particle hydrodynamics
653	0	a sph
653	0	a particle study
653	0	a Teknisk mekanik - Strömningsmekanik
700	1	a Jonsén, Pär4 aut
700	1	a Andreasson, Patrik4 aut
700	1	a Lundström, T. Staffan4 aut
700	1	a Hellström, J. Gunnar I.4 aut
710	1 2	a Luleå tekniska universitetb Institutionen för teknikvetenskap och matematik4 pbl
710	1 2	a Luleå tekniska universitetb Institutionen för teknikvetenskap och matematik4 pbl
772	1 8	i channel recordw 19941651
773	0 8	i Värdpublikationt Particle-based Methods – Fundamentals and Applicationsg 490-501
787	0 8	i Värdpublikation i annat formatt Particle-based Methods – Fundamentals and Applicationsz 9788489925670
856	4 0	u http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-28580
856	4 0	u http://ltu.diva-portal.org/smash/get/diva2:1001780/FULLTEXT01

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