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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
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
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
AIP Conference Proceedings, ISSN 0094-243X, 07/2018, Volume 1978, Issue 1
The paper presents the results of the experimental investigation of the operation of two similar high power centrifugal pumps with the help of an equipment... 
Centrifugal pumps | Power consumption | Electric motors
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
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
IOP Conference Series: Earth and Environmental Science, ISSN 1755-1315, 03/2019, Volume 240, p. 32018
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, 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
Bio-Medical Materials and Engineering, ISSN 0959-2989, 2014, Volume 24, Issue 1, pp. 853 - 860
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... 
Bypass graft | helical graft | anastomosis | hemodynamics | STEADY | MATERIALS SCIENCE, BIOMATERIALS | ENGINEERING, BIOMEDICAL | INTIMAL HYPERPLASIA | WALL MECHANICS | COMPUTATIONAL FLUID-DYNAMICS | TO-SIDE ANASTOMOSES
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
UPB Scientific Bulletin, Series D: Mechanical Engineering, ISSN 1454-2358, 2016, Volume 78, Issue 3, pp. 161 - 170
Journal Article
AIP Conference Proceedings, ISSN 0094-243X, 12/2015, Volume 1702, Issue 1
Decelerated swirling flows in conical diffusers can develop self-induced instabilities for some configurations of incoming flow. As a result, an upstream... 
conical diffuser | numerical assessment | new concept | precessing helical vortex | Conical flow | Three dimensional flow | Computational fluid dynamics | Data acquisition | Deceleration | Vortices | Helical flow | Fluid flow | Variations | Diffusers | Passive control | Swirling
Conference Proceeding
IOP Conference Series: Earth and Environmental Science, ISSN 1755-1307, 12/2016, Volume 49, Issue 6, p. 62001
Conference Proceeding
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
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
Energy Procedia, ISSN 1876-6102, 03/2017, Volume 112, pp. 225 - 231
In hydropower systems among hydropower plants there are integrated pumping stations (PS). In order to ensure higher flow rate, the pumps have constructive... 
efficiency curves | symmetrical suction elbow | cavitational behaviour | two speeds
Journal Article
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