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Showing results 1-50 of 112 << Previous 1 2 3    Next >>

2023
1 Kelele, Hailay Kiros; Kahsay, Mulu Bayray; Nielsen, Torbjørn Kristian.
Dynamic Response Analysis of Wind Turbine Structure to Turbulent Wind Load: Comparative Assessment in Time and Frequency Domains. Applied Mechanics 2023 ;Volume 4.(3) p. 841-855
NTNU Untitled
 
2022
2 Kelele, Hailay Kiros; Frøyd, Lars; Kahsay, Mulu Bayray; Nielsen, Torbjørn Kristian.
Characterization of Aerodynamics of Small Wind Turbine Blade for Enhanced Performance and Low Cost of Energy. Energies 2022 ;Volume 15.(21) p. -
NTNU Untitled
 
2021
3 Cavazzini, Giovanna; Storli, Pål-Tore Selbo; Nielsen, Torbjørn Kristian.
Hydropower. I: World Scientific Series in Current Energy Issues: Volume 7 Wind, Water and Fire The Other Renewable Energy Resources. World Scientific 2021 ISBN 978-981-122-591-8. p. 125-171
NTNU Untitled
 
2020
4 Kelele, Hailay Kiros; Nielsen, Torbjørn Kristian; Froyd, Lars; Kahsay, Mulu Bayray.
Catchment Based Aerodynamic Performance Analysis of Small Wind Turbine Using a Single Blade Concept for a Low Cost of Energy. Energies 2020 ;Volume 13.(21) p. -
NTNU Untitled
 
2019
5 Dhital, Tilak Chand; Nielsen, Torbjørn Kristian.
Flow and efficiency measurements with clamp-on ultrasonic equipment. Journal of Physics: Conference Series (JPCS) 2019 ;Volume 1266. p. -
NTNU Untitled
 
6 Mdee, Ombeni John; Kimambo, Cuthbert Z.M.; Nielsen, Torbjørn Kristian; Kihedu, Joseph.
Analytical Evaluation of Head and Flow Rate Off-Design Characteristics for Pump as Turbine Application. Journal of Fluids Engineering - Trancactions of The ASME 2019 ;Volume 141.(5)
NTNU Untitled
 
7 Nielsen, Torbjørn Kristian; Svingen, Bjørnar; Vilberg, Ingrid Kristine.
The elastic property of water and penstock's effect on the governor stability. IOP Conference Series: Earth and Environmental Science (EES) 2019 ;Volume 240.(5) p. 1-10
NTNU Untitled
 
8 Perkunder, Magnus Farstad; Nielsen, Torbjørn Kristian; Faudot, Celine.
Investigation of fluid transients in a penstock attached to a Francis turbine rig using seismic interferometry. Journal of Physics: Conference Series (JPCS) 2019 ;Volume 1266.(1) p. -
NTNU Untitled
 
9 Svarstad, Magni Fjørtoft; Nielsen, Torbjørn Kristian.
Pressure pulsations during a fast transition from pump to turbine mode of operation in laboratory and field experiment. IOP Conference Series: Earth and Environmental Science (EES) 2019 ;Volume 240.(8)
NTNU Untitled
 
10 Svingen, Bjørnar; Nielsen, Torbjørn Kristian.
Transient hydraulic calculations with a linear turbine model derived from a nonlinear synthetic model. IOP Conference Series: Earth and Environmental Science (EES) 2019 ;Volume 240.(5)
NTNU Untitled
 
11 Trivedi, Chirag; Dahlhaug, Ole Gunnar; Storli, Pål-Tore Selbo; Nielsen, Torbjørn Kristian.
Francis-99 Workshop 3: Fluid structure interaction. Journal of Physics: Conference Series (JPCS) 2019 ;Volume 1296.(1) p. 1-7
NTNU Untitled
 
12 Vilberg, Ingrid Kristine; Kjeldsen, Morten; Escaler, Xavier; Ekanger, Jarle Vikør; Nielsen, Torbjørn Kristian.
Influence of draft tube water injection system on cavitation behaviour in a full-scale Francis turbine with visual access. IOP Conference Series: Earth and Environmental Science (EES) 2019 ;Volume 240. p. -
NTNU Untitled
 
2018
13 Li, Deyou; Wang, Hongjie; Li, Zhenggui; Nielsen, Torbjørn Kristian; Goyal, Rahul; Wei, Xianzhu; Qin, Daqing.
Transient characteristics during the closure of guide vanes in a pump-turbine in pump mode. Renewable Energy 2018 ;Volume 118. p. 973-983
NTNU Untitled
 
14 Nielsen, Torbjørn Kristian; Svingen, Bjørnar; Vilberg, Ingrid Kristine.
The elastic property of water and penstock’s effect on the governor stability. 29th IAHR Symposium on Hydraulic Machinery and Systems; 2018-09-16 - 2018-09-21
NTNU Untitled
 
15 Nydal, Ole Jørgen; Nielsen, Torbjørn Kristian.
African University Collaboration on Renewable Energy. Innspill seminar NTNU; 2018-01-11 - 2018-01-11
NTNU Untitled
 
16 Storli, Pål-Tore Selbo; Nielsen, Torbjørn Kristian.
Simulation and Discussion of Models for Hydraulic Francis Turbine Simulations. IFAC-PapersOnLine 2018 ;Volume 51.(2) p. 109-114
NTNU Untitled
 
17 Svarstad, Magni Fjørtoft; Nielsen, Torbjørn Kristian.
Fast transition from pump to turbine mode of operation. International Journal of Fluid Machinery and Systems 2018 ;Volume 11.(3) p. 304-311
NTNU Untitled
 
18 Svingen, Bjørnar; Nielsen, Torbjørn Kristian.
First principles approach linear model for hydraulic turbines suitable for use in available simulation platforms. Pressure Surges 2018; 2018-11-14 - 2018-11-16
NTNU Untitled
 
19 Svingen, Bjørnar; Nielsen, Torbjørn Kristian.
Transient Hydraulic Calculations with a Linear Turbine Model derived from a Nonlinear Synthetic Model. 29th IAHR Symposium on Hydraulic Machinery and Systems; 2018-09-16 - 2018-09-21
NTNU Untitled
 
20 Vilberg, Ingrid Kristine; Kjeldsen, Morten; Arndt, Roger E. A.; Nielsen, Torbjørn Kristian.
The effect of gas content on cavitation shedding and test facility dynamics. 10th International Symposium on Cavitation (CAV2018); 2018-05-14 - 2018-05-16
NTNU UIS Untitled
 
21 Vilberg, Ingrid Kristine; Kjeldsen, Morten; Svingen, Bjørnar; Nielsen, Torbjørn Kristian.
Experimental assessment of pressure pulsations and transient characteristics of a 1400 m pipe line. Pressure Surges 2018; 2018-11-14 - 2018-11-16
NTNU Untitled
 
2017
22 Cervantes, Michel; Trivedi, Chirag; Dahlhaug, Ole Gunnar; Nielsen, Torbjørn Kristian.
Francis-99 Workshop 2: transient operation of Francis turbines. Journal of Physics: Conference Series (JPCS) 2017 ;Volume 782.(1)
NTNU Untitled
 
23 Gong, Ruzhi; Trivedi, Chirag; Dahlhaug, Ole Gunnar; Nielsen, Torbjørn Kristian.
Blade passage modeling strategy for hydraulic turbine. International Journal of Fluid Machinery and Systems 2017 ;Volume 10.(4) p. 345-354
NTNU Untitled
 
24 Li, Deyou; Wang, Hongjie; Nielsen, Torbjørn Kristian; Gong, Ruzhi; Wei, Xianzhu; Qin, Daqing.
Influence of guide vane setting in pump mode on performance characteristics of a pump-turbine. International Journal of Fluid Machinery and Systems 2017 ;Volume 10.(2) p. 154-163
NTNU Untitled
 
25 Vereide, Kaspar; Svingen, Bjørnar; Nielsen, Torbjørn Kristian; Lia, Leif.
The Effect of Surge Tank Throttling on Governor Stability, Power Control, and Hydraulic Transients in Hydropower Plants. IEEE transactions on energy conversion 2017 ;Volume 32.(1) p. 91-98
NTNU Untitled
 
2016
26 Li, Deyou; Wang, Hongjie; Chen, Jinxia; Nielsen, Torbjørn Kristian; Qin, Daqing; Wei, Xianzhu.
Hysteresis characteristic in the hump region of a pump-turbine model. Energies 2016 ;Volume 9.(8)
NTNU Untitled
 
27 Li, Deyou; Wang, Hongjie; Nielsen, Torbjørn Kristian; Gong, Ruzhi; Wei, Xianzhu; Qin, Daqing.
Influence of guide vane setting in pump mode on performance characteristics of a pump-turbine. IOP Conference Series: Earth and Environmental Science (EES) 2016 ;Volume 49.(4) p. -
NTNU Untitled
 
28 Nocente, Alessandro; Arslan, Tufan; Jasinski, Daniel; Nielsen, Torbjørn Kristian.
A Study of Flow inside a Centrifugal Pump: High Performance Numerical Simulations Using GPU cards. ISROMAC16 - International Symposium on Transport Phenomena and Dynamics of Rotating Machinery; 2016-04-10 - 2016-04-15
NTNU Untitled
 
29 Solemslie, Bjørn Winther.
Experimental methods and design of a Pelton bucket. Trondheim: NTNU 2016 (ISBN 978-82-326-0860-7) 167 p. Doktoravhandlinger ved NTNU(2016:01)
NTNU Untitled
 
30 Thapa, Biraj Singh.
Effects of sediment erosion in guide vanes of Francis turbines. Trondheim: Skipnes Kommunikasjon as 2016 (ISBN 978-82-326-1859-0) 205 p.
NTNU Untitled
 
31 Vereide, Kaspar.
Hydraulics and Thermodynamics of Closed Surge Tanks for Hydropower Plants. Trondheim: Skipnes Kommunikasjon as 2016 (ISBN 978-82-326-1386-1) ;Volume 2016.99 p. Doktoravhandlinger ved NTNU(20)
NTNU Untitled
 
32 Walseth, Eve Cathrin; Nielsen, Torbjørn Kristian; Svingen, Bjørnar.
Measuring the dynamic characteristics of a low specific speed pump-Turbine model. Energies 2016 ;Volume 9.(3) p. -
NTNU Untitled
 
33 Wiborg, Erik Jacques.
Continuous Efficiency Measurements on Hydro Power Plants. Trondheim: NTNU 2016 (ISBN 978-82-326-1998-6) 209 p. Doktoravhandlinger ved NTNU(2016:330)
NTNU Untitled
 
2015
34 Cervantes, Michel; Trivedi, Chirag; Dahlhaug, Ole Gunnar; Nielsen, Torbjørn Kristian.
Francis-99 Workshop 1: steady operation of Francis turbines. Journal of Physics: Conference Series (JPCS) 2015 ;Volume 579. p. -
NTNU Untitled
 
35 Escaler, Xavier; Ekanger, Jarle Vikør; Francke, Håkon Hjort; Kjeldsen, Morten; Nielsen, Torbjørn Kristian.
Detection of Draft Tube Surge and Erosive Blade Cavitation in a Full-Scale Francis Turbine. Journal of Fluids Engineering - Trancactions of The ASME 2015 ;Volume 137.(1) p. -
NTNU Untitled
 
36 Nielsen, Torbjørn Kristian.
Simulation model for Francis and Reversible Pump Turbines. International Journal of Fluid Machinery and Systems 2015 ;Volume 8.(3) p. 169-182
NTNU Untitled
 
37 Nocente, Alessandro; Arslan, Tufan; Nielsen, Torbjørn Kristian.
Numerical Prediction of a Multistage Centrifugal Pump Performance With Stationary and Moving Mesh. I: ASME 2015 Power Conference collocated with the ASME 2015 9th International Conference on Energy Sustainability, the ASME 2015 13th International Conference on Fuel Cell Science, Engineering and Technology, and the ASME 2015 Nuclear Forum. ASME Press 2015 ISBN 978-0-7918-5660-4. p. -
NTNU Untitled
 
38 Nocente, Alessandro; Arslan, Tufan; Nielsen, Torbjørn Kristian.
Numerical Simulation of Flow inside Centrifugal Pump by two different Solvers. I: Proceedings of MekIT'15 Eighth National Conference on Computational Mechanics. International Center for Numerical Methods in Engineering (CIMNE) 2015 ISBN 97884944244-96. p. 333-342
NTNU Untitled
 
39 Vereide, Kaspar; Lia, Leif; Nielsen, Torbjørn Kristian.
Hydraulic scale modelling and thermodynamics of mass oscillations in closed surge tanks. Journal of Hydraulic Research 2015 ;Volume 53.(4) p. 519-524
NTNU Untitled
 
40 Vereide, Kaspar; Tekle, Torbjørn; Nielsen, Torbjørn Kristian.
Thermodynamic Behaviour and Heat Transfer in Closed Surge Tanks for Hydropower Plants. Journal of Hydraulic Engineering 2015 ;Volume 141.(6) p. -
NTNU Untitled
 
2014
41 Kaunda, Chiyembekezo Suzgo; Kimambo, C.Z.; Nielsen, Torbjørn Kristian.
A technical discussion on microhydropower technology and its turbines. Renewable and Sustainable Energy Reviews 2014 ;Volume 35. p. 445-459
NTNU Untitled
 
42 Kaunda, Chiyembekezo Suzgo; Kimambo Z, Cuthbert; Nielsen, Torbjørn Kristian.
A numerical investigation of flow profile and performance of a low cost Crossflow turbine. The International Journal of Energy and Environment 2014 ;Volume 5.(3) p. 275-296
NTNU Untitled
 
43 Nielsen, Torbjørn Kristian; Storli, Pål-Tore Selbo.
Measurements and simulations of turbines on common grid. IOP Conference Series: Earth and Environmental Science (EES) 2014 ;Volume 22.(4) p. -
NTNU Untitled
 
44 Nielsen, Torbjørn Kristian; Svarstad, Magni Fjørtoft.
Unstable behaviour of RPT when testing turbine characteristics in the laboratory. IOP Conference Series: Earth and Environmental Science (EES) 2014 ;Volume 22. p. -
NTNU Untitled
 
45 Snøfugl, Ingvil; Storli, Pål-Tore Selbo; Nielsen, Torbjørn Kristian; Dahlhaug, Ole Gunnar; Lia, Leif.
Nytt vannkraftsenter skal lokke ungdom vekk fra oljebransjen. Teknisk Ukeblad nettavis [Internet] 2014-02-10
NTNU Untitled
 
46 Storli, Pål-Tore Selbo; Nielsen, Torbjørn Kristian.
Dynamic load on a Francis turbine runner from simulations based on measurements. IOP Conference Series: Earth and Environmental Science (EES) 2014 ;Volume 22.(3) p. -
NTNU Untitled
 
47 Storli, Pål-Tore Selbo; Nielsen, Torbjørn Kristian; Lundgren, Silje Strand.
Vannkraft: Europas grønne batteri. Under Dusken [Journal] 2014-03-11
NTNU Untitled
 
48 Vereide, Kaspar; Lia, Leif; Nielsen, Torbjørn Kristian.
Physical Modelling of Hydropower Waterway with Air Cushion Surge Chamber (ISBN 9781742721156). 5th International Symposium on Hydraulic Structures; 2014-06-25 - 2014-06-25
NTNU Untitled
 
49 Wiborg, Erik Jacques; Hulaas, Harald; Francke, Håkon Hjort; Nielsen, Torbjørn Kristian.
Applied statistical quality control on field measurement data. IGHEM 2014; 2014-09-06 - 2014-09-19
NTNU Untitled
 
2013
50 Harby, Atle; Sauterleute, Julian; Korpås, Magnus; Killingtveit, Ånund; Solvang, Eivind; Nielsen, Torbjørn Kristian.
Pumped Storage Hydropower. 3rd International Conference on Energy Process Engineering; 2013-06-04 - 2013-06-06
ENERGISINT NTNU Untitled
 
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