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Doctoral Thesis
Author of thesis: Ing. Bc. Daniel Himr, Ph.D.
Acad. year: 2010/2011
Supervisor: prof. Ing. František Pochylý, CSc.
Reviewer: The opponent will be displayed after his opinion is published.
Thesis deals about solution of non-steady flow in hydraulic systems, which have one dominant component of velocity. Such systems can be arbitrarily structured and they are not limited by number of elements. Computation is based on Lax-Wendroff method and enables considering of variable sound peed as function of static pressure and properties of pipe material. It means, that hydraulic system can be very various. Numerical method is described in detail and description is also focused on sensitivity of method for time step and length step. It can be very imported for evaluation of numerical viscosity, which is compared with second viscosity of fluid. Hammer is working title of software, which was developed on the basis of written numerical procedures. This software enables fast computation of flow in pipe-line systems.
1D flow, hydraulics system, sound speed, Lax-Wendroff, damping
Date of defence
03.06.2011
Result of the defence
Defended (thesis was successfully defended)
Process of defence
Téma disertace je aktuální. Vytvořený mat. model a programový systém řešící dynamiku hydraulických obvodů má přínosný význam pro technické obory.
Language of thesis
Czech
Faculty
Fakulta strojního inženýrství
Department
Energy Institute
Study programme
Machines and Equipment (2302V)
Field of study
Design and Process Engineering (D-KPI)
Composition of Committee
prof. Ing. Antonín Píštěk, CSc. (předseda) prof. RNDr. Milada Kozubková, CSc. (člen) prof. Ing. Jan Šklíba, CSc. (člen) doc. Ing. Branislav Knížat, CSc. (člen) doc. Ing. Sylva Drábková, Ph.D. (člen) prof. Ing. Michal Varchola, CSc. (člen) prof. Ing. Jan Šulc, CSc. (člen) prof. Ing. Jan Melichar, CSc. (člen) doc. Ing. Vladimír Habán, Ph.D. (člen)
Supervisor’s reportprof. Ing. František Pochylý, CSc.
Responsibility: Mgr. et Mgr. Hana Odstrčilová