2018

• Vitenskapelig foredrag
  Svingen, Bjørnar; Nielsen, Torbjørn Kristian. (2018) First principles approach linear model for hydraulic turbines suitable for use in available simulation platforms. BHR Group Pressure Surges 2018 , Bordeaux 2018-11-14 - 2018-11-16
• Vitenskapelig foredrag
  Nielsen, Torbjørn Kristian; Svingen, Bjørnar; Vilberg, Ingrid Kristine. (2018) The elastic property of water and penstock’s effect on the governor stability. IAHR 29th IAHR Symposium on Hydraulic Machinery and Systems , Kyoto 2018-09-16 - 2018-09-21
• Vitenskapelig foredrag
  Vilberg, Ingrid Kristine; Kjeldsen, Morten; Svingen, Bjørnar; Nielsen, Torbjørn Kristian. (2018) Experimental assessment of pressure pulsations and transient characteristics of a 1400 m pipe line. BHR Group Pressure Surges 2018 , Bordeaux 2018-11-14 - 2018-11-16
• Vitenskapelig foredrag
  Vilberg, Ingrid Kristine; Kjeldsen, Morten; Arndt, Roger E. A.; Nielsen, Torbjørn Kristian. (2018) The effect of gas content on cavitation shedding and test facility dynamics. 10th International Symposium on Cavitation (CAV2018) 2018-05-14 - 2018-05-16
• Populærvitenskapelig foredrag
  Nydal, Ole Jørgen; Nielsen, Torbjørn Kristian. (2018) African University Collaboration on Renewable Energy. NTNU Innspill seminar NTNU , Trondheim 2018-01-11 - 2018-01-11
• Vitenskapelig foredrag
  Svingen, Bjørnar; Nielsen, Torbjørn Kristian. (2018) Transient Hydraulic Calculations with a Linear Turbine Model derived from a Nonlinear Synthetic Model. IAHR 29th IAHR Symposium on Hydraulic Machinery and Systems , Kyoto 2018-09-16 - 2018-09-21

2016

• Faglig foredrag
  Nocente, Alessandro; Arslan, Tufan; Jasinski, Daniel; Nielsen, Torbjørn Kristian. (2016) 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 , Honolulu, HI 2016-04-10 - 2016-04-15

2014

• Intervju
  Snøfugl, Ingvil; Storli, Pål-Tore Selbo; Nielsen, Torbjørn Kristian; Dahlhaug, Ole Gunnar; Lia, Leif. (2014) Nytt vannkraftsenter skal lokke ungdom vekk fra oljebransjen. Teknisk Ukeblad nettavis Teknisk Ukeblad nettavis [Internett] 2014-02-10
• Intervju
  Storli, Pål-Tore Selbo; Nielsen, Torbjørn Kristian; Lundgren, Silje Strand. (2014) Vannkraft: Europas grønne batteri. Under Dusken Under Dusken [Tidsskrift] 2014-03-11
• Faglig foredrag
  Wiborg, Erik Jacques; Hulaas, Harald; Francke, Håkon Hjort; Nielsen, Torbjørn Kristian. (2014) Applied statistical quality control on field measurement data. International Gruop of Hydro Efficiency Measurements IGHEM 2014 , Itajuba 2014-09-06 - 2014-09-19
• Vitenskapelig foredrag
  Vereide, Kaspar; Lia, Leif; Nielsen, Torbjørn Kristian. (2014) Physical Modelling of Hydropower Waterway with Air Cushion Surge Chamber (ISBN 9781742721156). IAHR 5th International Symposium on Hydraulic Structures , Brisbane 2014-06-25 - 2014-06-25

2013

• Vitenskapelig foredrag
  Harby, Atle; Sauterleute, Julian; Korpås, Magnus; Killingtveit, Ånund; Solvang, Eivind; Nielsen, Torbjørn Kristian. (2013) Pumped Storage Hydropower. DECHEMA 3rd International Conference on Energy Process Engineering , Frankfurt am Main 2013-06-04 - 2013-06-06

2012

• Vitenskapelig foredrag
  Olimstad, Grunde; Nielsen, Torbjørn Kristian; Børresen, Bjarne. (2012) Geomatry Impact on Pump-Turbine Characteristics. ISROMAC , Honolulu 2012-02-27 - 2012-03-03
• Vitenskapelig foredrag
  Olimstad, Grunde; Nielsen, Torbjørn Kristian; Børresen, Bjarne. (2012) A Two-Dimensional Model for Pump-Turbine Instability Investigations. ISROMAC 2012-02-27 - 2012-03-03
• Vitenskapelig foredrag
  Walseth, Eve Cathrin; Svingen, Bjørnar; Nielsen, Torbjørn Kristian. (2012) Investigation of a 1D-model for simulating the characteristics of a high head Francis turbine. Technische Universität Darmstadt 14th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery. ISROMAC-14 , Honolulu, Hawaii 2012-02-27 - 2012-03-02
• Vitenskapelig foredrag
  Walseth, Eve Cathrin; Svingen, Bjørnar; Nielsen, Torbjørn Kristian. (2012) Comprehensive experimental study of instability in a reversible pump-turbine model at no-load operation. Hydro 2012 2012-10-29 - 2012-10-31

2011

• Vitenskapelig foredrag
  Walseth, Eve Cathrin; Svingen, Bjørnar; Nielsen, Torbjørn Kristian. (2011) Investigating the effect of turbine characteristics on the pressure response of a system. IAHR IAHR 4th international conference on cavitation and dynamic problems in hydraulic machinery and systems , Beograd 2011-10-26 - 2011-10-28
• Vitenskapelig foredrag
  Storli, Pål-Tore Selbo; Nielsen, Torbjørn Kristian. (2011) The quality of Norwegian grid frequency and the consequences for pumped storage. SHF Pumped Storage Powerplants , Lyon 2011-11-23 - 2011-11-24

2010

• Vitenskapelig foredrag
  Jonsson, Pontus P.; Ramdal, Jørgen; Nielsen, Torbjørn Kristian; Dahlhaug, Ole Gunnar; Cervantes, Michel. (2010) The Pressure-Time measurements project at LTU and NTNU. Indian Institute of Technology / IGHEM International Group for Hydraulic Efficiency Measurements , Roorkee 2010-10-21 - 2010-10-23
• Vitenskapelig foredrag
  Kobro, Einar; Nielsen, Torbjørn Kristian; Dahlhaug, Ole Gunnar. (2010) Data Analysis From Onboard Francis Model Runner Pressure Measurements. University of Tokyo, Japan The 13th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery , Honolulu, Hawaii 2010-04-04 - 2010-04-09
• Vitenskapelig foredrag
  Ramdal, Jørgen; Jonsson, Pontus P.; Nielsen, Torbjørn Kristian; Dahlhaug, Ole Gunnar; Cervantes, Michel. (2010) Uncertainties for Pressure-Time Efficiency Measurements. Indian Institute of Technology International Group for Hydraulic Efficiency Measurements , Roorkee 2010-10-21 - 2010-10-23
• Vitenskapelig foredrag
  Ramdal, Jørgen; Nielsen, Torbjørn Kristian; Dahlhaug, Ole Gunnar. (2010) UNCERTAINTY AND PERFORMANCE OF A LOW HEAD THERMODYNAMIC MEASUREMENT. Indian Institute of Technology / IGHEM International Group for Hydraulic Efficiency Measurements , Roorkee 2010-10-21 - 2010-10-23
• Vitenskapelig foredrag
  Walseth, Eve Cathrin; Nielsen, Torbjørn Kristian. (2010) Reversible Pumped Hydro-Benefits and Challenges. The Centre for Renewable Energy Renewable Energy Research Conference , Trondheim 2010-06-07 - 2010-06-08
• Vitenskapelig foredrag
  Nielsen, Torbjørn Kristian; Olimstad, Grunde. (2010) Dynamic Behaviour of Reversible Pump-Turbines in Turbine Mode of Operation. ISROMAC 2010-04-04 - 2010-04-07
• Vitenskapelig foredrag
  Zhao, Wei; Nielsen, Torbjørn Kristian; Billdal, Jan Tore. (2010) Effects of Cavity on Leakage Loss in Straight-though Labyrinth Seals. 25th IAHR Symposium on Hydraulic Machinery and Systems , Timisoara 2010-09-20 - 2010-09-24
• Vitenskapelig foredrag
  Zhao, Wei; Nielsen, Torbjørn Kristian; Billdal, Jan Tore. (2010) An Experimental Study on Leakage Flow in Different Geometrical Disk Seals. 9th International Conference on Hydrodynamics , Shanghai 2010-10-11 - 2010-10-15

2009

• Vitenskapelig foredrag
  Kobro, Einar; Gamboa, Alphonse; Bloch, Reinhard; Nielsen, Torbjørn Kristian. (2009) ONBOARD PRESSURE MEASUREMENT IN HIGH HEAD FRANCIS PROTOTYPE RUNNERS. IAHR 3rd IAHR International Meeting of the Workgroup on Cavitation and Dynamic Problems in Hydraulic Machinery and Systems, , Brno 2009-10-14 - 2009-10-16
• Vitenskapelig foredrag
  Ramdal, Jørgen; Jonsson, Pontus P.; Nielsen, Torbjørn Kristian; Cervantes, Michel. (2009) Finding Inertia Constants for Bends related to a Modified Gibson Method. IAHR 3rd IAHR International Meeting of the Workgroup on Cavitation and Dynamic Problems in Hyrdraulic Machinery and System , Brno 2009-10-14 - 2009-10-16
• Vitenskapelig foredrag
  Storli, Pål-Tore Selbo; Nielsen, Torbjørn Kristian. (2009) Improving the performance of instantaneous acceleration based models using curved coefficients. IAHR 3rd Internartional Meeting of the Workgroup on Cavitation and Dynamic Problems in Hydraulic Machinery and Systems , Brno 2009-10-14 - 2009-10-16
• Vitenskapelig foredrag
  Storli, Pål-Tore Selbo; Nielsen, Torbjørn Kristian. (2009) Curved friction coefficients for better fit with experimental results. Deltares International Meeting on “Unsteady friction in pipes, ducts and channels” , Delft 2009-05-06 - 2009-05-07
• Vitenskapelig foredrag
  Nielsen, Torbjørn Kristian. (2009) System Dynamics in Hydro Power. Vattenfall 3rd Nordic Conference in Fluid Dynamics , Köbenhavn 2009-09-15 - 2009-09-16
• Poster
  Ramdal, Jørgen; Nielsen, Torbjørn Kristian; Jonsson, Pontus P.; Cervantes, Michel. (2009) FINDING INERTIA TIME CONSTANTS FOR BENDS RELATED TO A MODIFIED GIBSON’S METHOD. IAHR 3rd IAHR Int. meeting of the workgroup on cavitation and dynamic problems in Hydarulic machinery , Brno 2009-10-14 - 2009-10-16
• Populærvitenskapelig foredrag
  Nielsen, Torbjørn Kristian. (2009) Hva betur turbinvirkningsgraden på inntekten. Energi Norge Småkraftverk konferanse , Gardermoen 2009-03-09 -
• Populærvitenskapelig foredrag
  Nielsen, Torbjørn Kristian. (2009) Hydro Power. ISFIT/NTNU ISFIT 09 , Trondheim 2009-09-08 - 2009-09-09
• Populærvitenskapelig foredrag
  Nielsen, Torbjørn Kristian. (2009) Vannkraft i verden. Energi Norge Maskinmøte 09 , Trondheim 2009-12-10 -

2008

• Vitenskapelig foredrag
  Ramdal, Jørgen; Nielsen, Torbjørn Kristian; Dahlhaug, Ole Gunnar. (2008) Decreasing uncertainty in thermodynamic measurement. IAHR IAHR Symposium on Hydraulic Machinery and systems , Foz do Iguassu, Brazil 2008-10-27 - 2008-10-31
• Vitenskapelig foredrag
  Kobro, Einar; Dahlhaug, Ole Gunnar; Nielsen, Torbjørn Kristian. (2008) Onboard Pressure Measurement In Francis Model Runner Blades. IAHR 24th IAHR Symposium on Hydraulic Machinery and Systems , Foz do Iguazzu 2008-10-27 - 2008-10-31
• Vitenskapelig foredrag
  Storli, Pål-Tore Selbo; Nielsen, Torbjørn Kristian. (2008) NON- STATIONARY, FREQUENCY DEPENDENT FRICTION IN HYDRAULIC PIPE SYSTEMS; AN INVESTIGATION OF THE ZIELKE MODEL. 24th IAHR Symposium on Hydraulic Machinery and Systems 2008-10-27 - 2008-10-31

2006

• Vitenskapelig foredrag
  Svingen, Bjørnar; Nielsen, Torbjørn Kristian; Skaare, Per Egil. (2006) On transient problems in Norwegian Power Plants, and solution by transient analysis and interactive simulators using LVTrans. IAHR IAHR International meeting of WG on Cavitation and Dynamic Problems in Hydraulic Machinery and Systems , Barcelona 2006-06-20 - 2006-06-30
• Vitenskapelig foredrag
  Svingen, Bjørnar; Brekke, Terje; Skaare, Per Egil; Nielsen, Torbjørn Kristian. (2006) Minimizing oscillations and transients for large and rapid changes in power output from hydro power plants by new control algorithms. IAHR 23th IAHR Symposium , Yokohama 2006-10-17 - 2006-10-20
• Vitenskapelig foredrag
  Nielsen, Torbjørn Kristian; Røyrvik, Johnny; Ramdal, Jørgen; Dahlhaug, Ole Gunnar. (2006) Propeller turbine with two contra-rotating impellers and built in generators. IAHR 23th IAHR Symposium , Yokohama 2006-10-17 - 2006-10-20
• Vitenskapelig foredrag
  Antonsen, Øyvind; Nielsen, Torbjørn Kristian; Dahlhaug, Ole Gunnar; Billdal, Jan Tore. (2006) Pressure pulses in Francis Turbines vs. guide vane design. The Int. Association of Hydraulic Engineering and Research 23rd IAHR Symposium on Hydraulic Machinery and Systems , Yokohama 2006-10-17 - 2006-10-21
• Vitenskapelig foredrag
  Kjeldsen, Morten; Olsen, Knut Magne; Nielsen, Torbjørn Kristian; Dahlhaug, Ole Gunnar. (2006) Water injection for the mitigation of draft tube pressure pulsations. IAHR IAHR Int. Meeting on Cavitation and Dynamic Problems , Barcelona 2006-06-28 - 2006-06-30
• Vitenskapelig foredrag
  Antonsen, Øyvind; Nielsen, Torbjørn Kristian; Dahlhaug, Ole Gunnar. (2006) Experimental and Theoretical Investigations of the Flow Field at the Inlet of a Francis Runner. HCI-Publication HydroVision 2006 , Portland, Oregon 2006-08-01 - 2006-08-04
• Vitenskapelig foredrag
  Dahlhaug, Ole Gunnar; Kobro, Einar; Skåre, Per Egil; Nielsen, Torbjørn Kristian; Thapa, Bhola. (2006) Efficiency loss in Pelton buckets due to sediment erosion. The Int. Association of Hydraulic Engineering and Research 23rd IAHR Symposium on Hydraulic Machinery and Systems , Yokohama 2006-10-17 - 2006-10-21
• Vitenskapelig foredrag
  Dahlhaug, Ole Gunnar; Nielsen, Torbjørn Kristian; Brandåstrø, Bård Aslak; Francke, Håkon Hjort; Hulaas, Harald. (2006) Comparison between pressure-time and thermodynamic efficiency measurements on a low head turbine. The International Group for Hydraulic Efficiency Measurement IGHEM 2006 , Portland, Oregon 2006-07-30 - 2006-08-01

2005

• Intervju
  Nielsen, Torbjørn Kristian. (2005) Opp av bølgedalen. Ukeavisen Ledelse, Nyskaping Ukeavisen Ledelse, Nyskaping [Avis] 2005-12-01
• Intervju
  Nielsen, Torbjørn Kristian. (2005) Bygger kraftverk under vann. Teknisk ukeblad Teknisk ukeblad [Avis] 2005-07-23
• Intervju
  Nielsen, Torbjørn Kristian. (2005) Vil ta kraft fra bølgene. Dagens Næringsliv Dagens Næringsliv [Avis] 2005-06-24
• Intervju
  Nielsen, Torbjørn Kristian. (2005) Distriktsnyheter Sogn og fjordane vedr. bølgekraft. NRK Sogn og fjordane NRK Sogn og fjordane [Radio] 2005-06-25
• Intervju
  Nielsen, Torbjørn Kristian. (2005) Ubegripelig kraftsatsing. Teknisk ukeblad Teknisk ukeblad [Avis] 2005-07-23
• Vitenskapelig foredrag
  Dahlhaug, Ole Gunnar; Thapa, Bhola; Nielsen, Torbjørn Kristian; Ruud, Jonas Jessen. (2005) Thermodynamic efficiency measurement of Khimti Hydropower Plant and assessment of sand erosion on turbine components. International Center for Hydropower, ICH Hydropwer �05, The Backbone of Sustainable Energy Supply. , Stavanger 2005-05-23 - 2005-05-25
• Populærvitenskapelig foredrag
  Nielsen, Torbjørn Kristian. (2005) Fornybar energi i startgropa-salt, bølger, havstrøm og sol. Norges vassdrags- og energidirektorat Norges energidager 2005 , Oslo 2005-10-20 - 2005-10-21

2004

• Intervju
  0lsen, Claude R.; Falnes, Johannes; Nielsen, Torbjørn Kristian; Rostrup, Jørgen. (2004) Nytt liv for bølgekraften. EuroPower, juni 2004, 2(6) , vedlegg til Dagens Næringsliv EuroPower, juni 2004, 2(6) , vedlegg til Dagens Næringsliv [Avis] 2004-06-25
• Vitenskapelig foredrag
  Nielsen, Torbjørn Kristian. (2004) Frequency and load regulatig ability of water power plants exposed to Load ramping. IAHR, Vattenfall IAHR Symposium , Stockholm 2004-06-29 - 2004-07-02
• Vitenskapelig foredrag
  Antonsen, Øyvind; Nielsen, Torbjørn Kristian. (2004) CFD simulation of von Karman vortex shedding. IAHR, VAttenfall IAHR Symposium , Stockholm 2004-06-29 - 2004-07-02
• Vitenskapelig foredrag
  Pettersen, Kristin; Nielsen, Torbjørn Kristian; Billdal, Jan Tore. (2004) An explanation to steep speed-flow characteristics of RPTs. IAHR, Vattenfall IAHR Symposium , Stockholm 2004-06-29 - 2004-07-02

2003

• Programdeltagelse
  Nielsen, Torbjørn Kristian. (2003) Schrødingers katt: uttalelse om nytt elvekraft konsept. NRK, Schrødingers katt NRK, Schrødingers katt [TV] 2003-11-27
• Vitenskapelig foredrag
  Nielsen, Torbjørn Kristian. (2003) Om turbiner og anlegg for små vannkraftverk. Norsk Elektroteknisk forening; Dagseminar småkraftverk , Oslo 2003-10-30 -
• Vitenskapelig foredrag
  Nielsen, Torbjørn Kristian; Antonsen, Øyvind. (2003) CFD simulation of von Karman vortex shedding. IAHR Work Group , Stuttgart, Germany 2003-10-10 -