Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Dragica Jošt"'
Autor:
Simone Martini, Enrico Nobile, Mitja Morgut, Thomas Puzzer, Dragica Jošt, Aljaž Škerlavaj, Giorgio Contento, Riccardo Pigazzini
Publikováno v:
International Shipbuilding Progress. 66:77-90
The numerical predictions of a cavitating model scale propeller working in uniform and oblique flow conditions are presented. The cavitating phenomena are numerically reproduced using a homogeneous (mixture) model where three previously calibrated ma
The paper presents a numerical analysis of flow in a 6-jet Pelton turbine for 1-nozzle operation. Flow in the manifold with injectors was analysed in order to get inlet conditions for runner analysis, which was at first performed without cavitation.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::19de321d31b423d08548466a9e9038d4
http://hdl.handle.net/11368/2957769
http://hdl.handle.net/11368/2957769
This paper presents results of the numerical analysis of two Pelton turbines: a 6-jet turbine for middle head and a 2- jet turbine for high head. For the 6-jet turbine losses in manifold, quality of the jets and turbine efficiency were predicted and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2831a02a54be526fc14585e53f872958
https://www.jstage.jst.go.jp/article/ijfms/12/4/12_388/_pdf
https://www.jstage.jst.go.jp/article/ijfms/12/4/12_388/_pdf
Transient simulations of flow in a Francis turbine were performed with a goal to predict pressure pulsation frequencies and amplitudes caused by rotating vortex rope at part load operating regime. Simulations were done with the SAS SST turbulence mod
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8149e3a05871fa6caa766476a063f3fa
http://hdl.handle.net/11368/2901444
http://hdl.handle.net/11368/2901444
In this study, the objective of the optimization of a double-suction pump is the maximization of its hydraulic efficiency. The optimization is performed, by means of the modeFRONTIER optimization platform, in steps. At first, by means of a DOE (Desig
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f1f36ea017b4f92eeba9067ce382bbc2
https://hdl.handle.net/11368/2899562
https://hdl.handle.net/11368/2899562
This paper presents numerical analysis of the flow in a 3-blade bulb turbine. Numerically predicted efficiency values for maximal runner blade angle are compared to the measurements. A bulb turbine, for which deviation of steady state results from th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::a62fe161ca58e0807fc1bffa8fb84b24
http://www.drustvozamehaniko.si/zbornik/ZbornikKD2014.pdf
http://www.drustvozamehaniko.si/zbornik/ZbornikKD2014.pdf
The paper presents numerical simulations of flow in a model of a high head Francis turbine and comparison of results to the measurements. Numerical simulations were done by two CFD (Computational Fluid Dynamics) codes, Ansys CFX and OpenFOAM. Steady-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::38f9a5183eb0f0cb0f8d975d5db93bd2
http://hdl.handle.net/11368/2870610
http://hdl.handle.net/11368/2870610
Publikováno v:
Journal of Physics: Conference Series. 813:012048
In this study the impeller geometry of a double-suction pump ensuring the best performances in terms of hydraulic efficiency and reluctance of cavitation is determined using an optimization strategy , which was driven by means of the modeFRONTIER opt
Publikováno v:
Strojniški vestnik
A comparison between numerical simulations and measurements of a six-blade Kaplan turbine is presented in order to determine anappropriate numerical setup for accurate and reliable simulations of Kaplan turbines. Values of discharge, torque and losse
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b2450cc1141cd68942fd669bdcb2b3df
http://www.dlib.si/details/URN:NBN:SI:doc-LZS0BROK
http://www.dlib.si/details/URN:NBN:SI:doc-LZS0BROK
Publikováno v:
Journal of Physics: Conference Series. 656:012066
The numerical predictions of cavitating flow around a marine propeller working in non-uniform inflow and an axial turbine are presented. The cavitating flow is modelled using the homogeneous (mixture) model. Time-dependent simulations are performed f