2023
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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
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2022
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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
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2021
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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
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2020
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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
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2019
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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
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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
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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
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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
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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
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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
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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
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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
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2018
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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
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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
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15. |
Nydal, Ole Jørgen; Nielsen, Torbjørn Kristian. African University Collaboration on Renewable Energy. Innspill seminar NTNU; 2018-01-11 - 2018-01-11 NTNU
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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
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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
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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
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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
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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
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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
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2017
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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
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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
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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
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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
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2016
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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
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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
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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
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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
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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
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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
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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
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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
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2015
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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
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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
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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
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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
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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
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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
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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
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2014
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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
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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
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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
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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
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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
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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
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47. |
Storli, Pål-Tore Selbo; Nielsen, Torbjørn Kristian; Lundgren, Silje Strand. Vannkraft: Europas grønne batteri. Under Dusken [Journal] 2014-03-11 NTNU
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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
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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
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2013
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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
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