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AIP Conference Proceedings, ISSN 0094-243X, 06/2016, Volume 1738, Issue 1
The variable demand on the energy market enforces that hydraulic turbine to operate at different regimes, far from the best efficiency point. An experimental... 
lower runner speeds | swirl generator | numerical simulation | draft tube cone | Hydraulic turbines | Qualitative analysis | Velocity distribution | Full load
Journal Article
UPB Scientific Bulletin, Series D: Mechanical Engineering, ISSN 1454-2358, 2014, Volume 76, Issue 2, pp. 243 - 250
The discharge cone of hydraulic turbines remains the subject to numerous investigations since the flow unsteadiness developed at regimes far from the best... 
LDA measurements | Vortex rope | Discharge cone | Experimental investigations | Rope | Fluid dynamics | Deceleration | Vortices | Variability | Fluid flow | Breakdown | Discharge | Pulsation
Journal Article
Proceedings of the Romanian Academy Series A - Mathematics Physics Technical Sciences Information Science, ISSN 1454-9069, 04/2015, Volume 16, Issue 2, pp. 168 - 175
Journal Article
Proceedings of the Romanian Academy Series A - Mathematics Physics Technical Sciences Information Science, ISSN 1454-9069, 07/2017, Volume 18, Issue 3, pp. 248 - 255
Stent deployment alters the geometric flow boundary conditions, due to the protrusion of stent struts into the flow stream. The flow field in the vicinity of... 
Stenosis | Re-stenosis | Wall shear stress | Pressure drop | Stent | stent | WALL SHEAR-STRESS | IMPLANTATION | PATHWAY | MULTIDISCIPLINARY SCIENCES | wall shear stress | pressure drop | re-stenosis | stenosis
Journal Article
UPB Scientific Bulletin, Series D: Mechanical Engineering, ISSN 1454-2358, 2014, Volume 76, Issue 3, pp. 207 - 214
This paper aims to experimentally investigate the non-uniform velocity field on the suction elbow outlet of the large pumps. The suction elbow has a... 
Symmetrical suction elbow | LDV measurements | Large pump | Non-uniform inflow | Fluid dynamics | Pumps | Impellers | Circumferences | Fluid flow | Outlets | Elbows | Three dimensional | Inlets
Journal Article
Proceedings of the Romanian Academy Series A - Mathematics Physics Technical Sciences Information Science, ISSN 1454-9069, 2014, Volume 15, Issue 1, pp. 52 - 59
We investigated the flow field within a rigid-walled numerical model of 30 degrees, 45 degrees, and 60 degrees degree bypass graft in order to attempt to... 
Numerical simulation | By-pass graft | Secondary flow | Dean vortice | secondary flow | MULTIDISCIPLINARY SCIENCES | dean vortice | by-pass graft | numerical simulation | TWISTED PIPE | CHAOTIC ADVECTION
Journal Article
UPB Scientific Bulletin, Series D: Mechanical Engineering, ISSN 1454-2358, 2016, Volume 78, Issue 3, pp. 161 - 170
Journal Article
Bio-Medical Materials and Engineering, ISSN 0959-2989, 01/2013, Volume 23, Issue S1, pp. S885 - S892
The long-term success of arterial bypass surgery is often limited by the progression of intimal hyperplasia at the anastomosis between the graft and the native... 
Biotechnology | Computational fluid dynamics | Vortices | Glass | Fluid flow | Helical | Arteries | Biomedical engineering
Journal Article
Proceedings of the Romanian Academy Series A - Mathematics Physics Technical Sciences Information Science, ISSN 1454-9069, 07/2016, Volume 17, Issue 3, pp. 237 - 244
The flexible operation of the large hydraulic pumps requires to be run at variable discharges and speeds. The large pumps are equipped with a suction elbow... 
Symmetrical suction elbow | Large pump | Variable discharge and speed | Unsteady pressure | unsteady pressure | variable discharge and speed | MULTIDISCIPLINARY SCIENCES | symmetrical suction elbow | large pump
Journal Article
Bio-medical materials and engineering, 2014, Volume 24, Issue 1, pp. 853 - 860
Journal Article
Proceedings of the Romanian Academy Series A - Mathematics Physics Technical Sciences Information Science, ISSN 1454-9069, 07/2010, Volume 11, Issue 3, pp. 245 - 252
The variable demand of the energy market forces that hydraulic turbine to work at different regimes, which includes the regimes far from and the best... 
Numerical simulation | Jet control | Vortex rope | Experimental investigation | Draft tube | MULTIDISCIPLINARY SCIENCES
Journal Article
Proceedings of the Romanian Academy Series A - Mathematics Physics Technical Sciences Information Science, ISSN 1454-9069, 04/2011, Volume 12, Issue 2, pp. 125 - 132
It is known that the hydraulic turbines operated at partial discharge (especially hydraulic turbines with fixed blades, i.e. Francis turbine), developing a... 
Flow-feedback control technique | Hydraulic turbines | Conical diffuser | Vortex rope | MULTIDISCIPLINARY SCIENCES
Journal Article
International Journal of Fluid Machinery and Systems, ISSN 1882-9554, 2011, Volume 4, Issue 1, pp. 199 - 208
This work presents numerical results, using OpenFOAM, of the flow in the swirl flow generator test rig developed at Politehnica University of Timisoara,... 
OpenFOAM | CFD | Validation | Runner | Draft tube | Swirl generator | Rotor-Stator Interaction
Journal Article
International Journal of Fluid Machinery and Systems, 2011, Volume 4, Issue 1, pp. 47 - 56
Journal Article
International Journal of Fluid Machinery and Systems, 2011, Volume 4, Issue 1, pp. 199 - 208
Journal Article
University "Politehnica" of Bucharest Scientific Bulletin, Series C: Electrical Engineering, ISSN 1454-234X, 01/2007, Volume 69, Issue 4, pp. 673 - 680
The paper presents the main steps in order to develop an experimental test rig for analysis and control the swirling flows in draft tube cone of the Francis... 
Journal Article
Journal of Fluids Engineering, ISSN 0098-2202, 06/2013, Volume 135, Issue 6, pp. 061304 - 061304-11
When reaction hydraulic turbines are operated far from the design operating regime, particularly at partial discharge, swirling flow instability is developed... 
flow-feedback method | experimental investigations | unsteady pressure analysis | vortex rope | decelerated swirling flow | NUMERICAL-SIMULATION | ENGINEERING, MECHANICAL | Mechanical properties | Hydraulic turbines | Research | Vortex-motion | Fluctuations (Physics) | Fluid dynamics | Feedback | Vortices | Fluid flow | Control systems | Control theory | Discharge | Swirling
Journal Article
Journal of Fluids Engineering, Transactions of the ASME, ISSN 0098-2202, 2012, Volume 134, Issue 8, pp. 81104 - 11
The variable demand of the energy market requires that hydraulic turbines operate at variable conditions, which includes regimes far from the best efficiency... 
unsteady pressure | vortex rope | experimental investigation | water injection method | decelerated swirling flow | CONICAL DIFFUSER | NUMERICAL-SIMULATION | ENGINEERING, MECHANICAL | Mechanical properties | Hydraulic turbines | Research | Hydraulic measurements | Vortex-motion | Pressure | Water injection | Jet control | Rope | Fluid dynamics | Vortices | Fluid flow | Diffusers | Discharge
Journal Article
Applied Sciences (Switzerland), ISSN 2076-3417, 08/2018, Volume 8, Issue 9, p. 1426
During the design and optimization of hydraulic turbomachines, the experimental evaluation of hydraulic performances beyond the best efficiency point and for... 
Hydraulic turbomachines | Dynamic measurements | Efficiency | Experimental testing | Small-hydro | experimental testing | small-hydro | efficiency | TURBINES | PHYSICS, APPLIED | PUMPS | MATERIALS SCIENCE, MULTIDISCIPLINARY | HYDROPOWER | dynamic measurements | hydraulic turbomachines | CHEMISTRY, MULTIDISCIPLINARY
Journal Article
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