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Showing results 1-50 of 101 << Previous 1 2 3    Next >>

2019
1 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 Environment 2019
NTNU UIS Untitled
 
2018
2 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
 
3 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
 
4 Nydal, Ole Jørgen; Nielsen, Torbjørn Kristian.
African University Collaboration on Renewable Energy. Innspill seminar NTNU; 2018-01-11 - 2018-01-11
NTNU Untitled
 
5 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
 
6 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
 
7 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
 
8 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
 
9 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
 
10 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
11 Cervantes, Michel; Trivedi, Chirag; Dahlhaug, Ole Gunnar; Nielsen, Torbjørn Kristian.
Francis-99 Workshop 2: transient operation of Francis turbines. Journal of Physics, Conference Series 2017 ;Volume 782.(1)
NTNU Untitled
 
12 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
 
13 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
 
14 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
15 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
 
16 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 Environment 2016 ;Volume 49.(4) p. -
NTNU Untitled
 
17 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
 
18 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
 
19 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
 
20 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
 
21 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
 
22 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
23 Cervantes, Michel; Trivedi, Chirag; Dahlhaug, Ole Gunnar; Nielsen, Torbjørn Kristian.
Francis-99 Workshop 1: steady operation of Francis turbines. Journal of Physics, Conference Series 2015 ;Volume 579. p. -
NTNU Untitled
 
24 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
 
25 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
 
26 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
 
27 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
 
28 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
 
29 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
30 Kaunda, Chiyembekezo Suzgo; Kimambo, C.Z.; Nielsen, Torbjørn Kristian.
A technical discussion on microhydropower technology and its turbines. Renewable & Sustainable Energy Reviews 2014 ;Volume 35. p. 445-459
NTNU Untitled
 
31 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
 
32 Nielsen, Torbjørn Kristian; Storli, Pål-Tore Selbo.
Measurements and simulations of turbines on common grid. IOP Conference Series: Earth and Environment 2014 ;Volume 22.(4) p. -
NTNU Untitled
 
33 Nielsen, Torbjørn Kristian; Svarstad, Magni Fjørtoft.
Unstable behaviour of RPT when testing turbine characteristics in the laboratory. IOP Conference Series: Earth and Environment 2014 ;Volume 22. p. -
NTNU Untitled
 
34 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
 
35 Storli, Pål-Tore Selbo; Nielsen, Torbjørn Kristian.
Dynamic load on a Francis turbine runner from simulations based on measurements. IOP Conference Series: Earth and Environment 2014 ;Volume 22.(3) p. -
NTNU Untitled
 
36 Storli, Pål-Tore Selbo; Nielsen, Torbjørn Kristian; Lundgren, Silje Strand.
Vannkraft: Europas grønne batteri. Under Dusken [Journal] 2014-03-11
NTNU Untitled
 
37 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
 
38 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
39 Harby, Atle; Sauterleute, Julian; Korpås, Magnus; Killingtveit, Ånund; Solvang, Eivind; Nielsen, Torbjørn Kristian.
Pumped Storage Hydropower. I: Transition to Renewable Energy Systems. Wiley-VCH Verlagsgesellschaft 2013 ISBN 978-3-527-33239-7. p. 597-617
ENERGISINT NTNU Untitled
 
40 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
 
41 Nielsen, Torbjørn Kristian.
Hydropower and pumped storage. I: Handbook of Energy. World Scientific 2013 ISBN 978-981-4343-51-0. p. 275-305
NTNU Untitled
 
42 Zhao, Wei; Billdal, Jan Tore; Nielsen, Torbjørn Kristian; Brekke, Håvard.
Study on the leakage flow through a clearance gap between two stationary walls. IOP Conference Series: Earth and Environment 2013 ;Volume 15. p. -
NTNU Untitled
 
2012
43 Olimstad, Grunde; Nielsen, Torbjørn Kristian; Børresen, Bjarne.
A Two-Dimensional Model for Pump-Turbine Instability Investigations. ISROMAC; 2012-02-27 - 2012-03-03
NTNU Untitled
 
44 Olimstad, Grunde; Nielsen, Torbjørn Kristian; Børresen, Bjarne.
Dependency on Runner Geometry for Reversible-Pump Turbine Characteristics in Turbine Mode of Operation. Journal of Fluids Engineering - Trancactions of The ASME 2012 ;Volume 134.(12) p. -
NTNU Untitled
 
45 Olimstad, Grunde; Nielsen, Torbjørn Kristian; Børresen, Bjarne.
Geomatry Impact on Pump-Turbine Characteristics. ISROMAC; 2012-02-27 - 2012-03-03
NTNU Untitled
 
46 Olimstad, Grunde; Nielsen, Torbjørn Kristian; Børresen, Bjarne.
Stability Limits of Reversible-Pump Turbines in Turbine Mode of Operation and Measurements of Unstable Characteristics. Journal of Fluids Engineering - Trancactions of The ASME 2012 ;Volume 134.(11) p. -
NTNU Untitled
 
47 Walseth, Eve Cathrin; Svingen, Bjørnar; Nielsen, Torbjørn Kristian.
Comprehensive experimental study of instability in a reversible pump-turbine model at no-load operation. Hydro 2012; 2012-10-29 - 2012-10-31
NTNU Untitled
 
48 Walseth, Eve Cathrin; Svingen, Bjørnar; Nielsen, Torbjørn Kristian.
Investigation of a 1D-model for simulating the characteristics of a high head Francis turbine. 14th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery. ISROMAC-14; 2012-02-27 - 2012-03-02
NTNU Untitled
 
2011
49 Storli, Pål-Tore Selbo; Nielsen, Torbjørn Kristian.
The quality of Norwegian grid frequency and the consequences for pumped storage. Pumped Storage Powerplants; 2011-11-23 - 2011-11-24
NTNU Untitled
 
50 Storli, Pål-Tore Selbo; Nielsen, Torbjørn Kristian.
Transient Friction in Pressurized Pipes. I: Investigation of Zielke's Model. Journal of Hydraulic Engineering 2011 ;Volume 137.(5) p. 577-584
NTNU Untitled
 
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