Knut Arne Strand
About
Background
I finished my PhD in physics in 1979 at NTH (now NTNU) with the thesis “Dynamic and static light scattering on sodium alginate in aqueous solution”. In 1986 I got a permanent position as an associate professor at this university. I retired in 2011. From then on I have a position as an associate professor emeritus.
Research
From 1979 to 1983, still at NTH, I continued with work similar to that done for my PhD thesis, that is with bulk light scattering from macromolecules and micelles in solutions.
From 1984 I started to lead a work building an especially versatile interface light-scattering spectrometer. The work was strongly financially supported by the Norwegian oil company Statoil (now Equinor). The spectrometer was tested in the PhD work of my PhD student Bård J. A. Bjørkvik. After he had finished his thesis in 1992, I have collaborated with him – both before and after he left the university for SINTEF Petroleum Research in 1997. We have mostly been doing projects paid for by oil companies – measuring fluid interface parameters – from fields producing oil and gas different places in the world. The measurements were all done under high pressure and high temperature corresponding to reservoir conditions.
Due to the above projects, I have used little time to do basic research. However, before I retired from my position as an associate professor, I in cooperation with Bjørkvik, did measurements on a near-critical model gas-condensate system. We were able to measure interfacial tension very near the critical point. Our lowest value measured for interfacial tension was a factor ten lower than had ever been measured between any gas and liquid with any method. We also determined critical indexes both for interfacial tension and for density difference.
From 2019 I have been working with bulk light-scattering data we measured on the same sample for the same model system as we measured interfacial tension for. We are hoping to obtain relations between correlation lengths in the gas and liquid phases (measured by bulk light-scattering) and the interfacial tension between the two phases (measured by interface light-scattering).
Teaching
I have among other courses taught the following:
- Wave physics, including special relativity (Bachelor course)
- Atomic and nuclear physics (Bachelor course)
- Quantum mechanics (Master course)
- Photon physics (PhD course)
When the Faculty of Physics, Informatics and Mathematics at NTNU in the year 2000 instituted an award for "The teacher of the year", I was the first recipient of that award.
Publications
2018
-
Strand, Knut Arne;
Bjørkvik, Bård Johan Arnt.
(2018)
Interface light-scattering on a methane-decane system in the near-critical region at 37.8 °C (100 °F).
Fluid Phase Equilibria
Academic article
2014
-
Falnes, Johannes;
Strand, Knut Arne.
(2014)
Dødsfall. TORBJØRN SIKKELAND.
Adresseavisen
Reader opinion piece
2007
-
Bjørkvik, Bård J.A;
Strand, Knut Arne.
(2007)
NFS1-1 K1 Interfacial Tension Measurement.
SINTEF AS
SINTEF AS
Report
2006
-
Strand, Knut Arne;
Bjørkvik, Bård J.
(2006)
Interfacial tension measurement in dodecane-water-bacteria system by laser-light scattering: Supplement No.2.
SINTEF AS
SINTEF AS
Report
2005
-
Bjørkvik, Bård J;
Holt, Torleif;
Strand, Knut Arne.
(2005)
Kristin reservoir fluids: Quantification of wettability, interfacial tensions and gas-in-water and water-in-gas content.
SINTEF AS
SINTEF AS
Report
2003
-
Bjørkvik, Bård J;
Strand, Knut Arne.
(2003)
Interfacial tension measurement in dodecane-water-bacteria system by laser-light scattering.
SINTEF AS
SINTEF AS
Report
2001
-
Bjørkvik, Bård Johan Arnt;
Strand, Knut Arne.
(2001)
Karachaganak well 432 gas condensate interfacial tension measured by laser-light scattering: Un-neutered fluid.
SINTEF Petroleum Research
SINTEF Petroleum Research
Report
1998
-
Bjørkvik, Bård Johan Arnt;
Strand, Knut Arne.
(1998)
Karachaganak gas condensate interfacial tension measured by laser-light scattering.
IKU Petroleum Research
IKU Petroleum Research
Report
1995
-
Bjørkvik, Bård Johan Arnt;
Waaler, Dag;
Sikkeland, Torbjørn;
Strand, Knut Arne;
Strømme, Gunvald Kristian.
(1995)
A versatile interface light-scattering spectrometer.
Measurement Science and Technology
Academic article
1994
-
Bjørkvik, Bård Johan Arnt;
Strømme, Gunvald Kristian;
Sikkeland, Torbjørn;
Strand, Knut Arne;
Waaler, Dag;
Munkerud, Per Kristian.
(1994)
Description of an Interface Light-Scattering Spectrometer with a Cylindrical High-Pressure Scattering Cell including Performance Test on a Model Gas-Condensate System.
Journal of Colloid and Interface Science
Academic article
1989
-
Waaler, Dag;
Strand, Knut Arne;
Strømme, Gunvald Kristian;
Sikkeland, Torbjørn.
(1989)
Dynamic light scattering observation of droplet aggregation in a Winsor type W/O microemulsion system.
Journal of Chemical Physics
Academic article
1986
-
Strand, Knut Arne;
Waaler, Dag;
Strømme, Gunvald Kristian;
Sikkeland, Torbjørn.
(1986)
BULK OG GRENSEFLATE LYSSPREDNING PÅ OLJE/VANN/SURFAKTANT LØSNINGER III. Rapport januar 1986: Prosjekt for Statoil.
Institutt for eksperimentalfysikk, NTH, Universitetet i Trondheim
Institutt for eksperimentalfysikk, NTH, Universitetet i Trondheim
Report
1985
-
Strand, Knut Arne;
Waaler, Dag;
Strømme, Gunvald Kristian;
Sikkeland, Torbjørn.
(1985)
BULK OG GRENSEFLATE LYSSPREDNING PÅ OLJE/VANN/SURFAKTANT LØSNINGER II.
Rapport januar 1985: Prosjekt for Statoil.
Institutt for eksperimentalfysikk, NTH, Universitetet i Trondheim
Institutt for eksperimentalfysikk, NTH, Universitetet i Trondheim
Report
1984
-
Strand, Knut Arne;
Waaler, Dag;
Strømme, Gunvald Kristian;
Sikkeland, Torbjørn.
(1984)
BULK OG GRENSEFLATE LYSSPREDNING PÅ OLJE/VANN/SURFAKTANT LØSNINGER
Delrapport januar 1984: Prosjekt for Statoil.
Institutt for eksperimentalfysikk, NTH, Universitetet i Trondheim
Institutt for eksperimentalfysikk, NTH, Universitetet i Trondheim
Report
-
Strand, Knut Arne;
Strømme, Gunvald Kristian;
Waaler, Dag;
Sikkeland, Torbjørn.
(1984)
Report on light scattering on a sapphire cell from ROP, France, supplied by Gjedebo, Stavanger 5.3.84.
Division of Experimental Physics, University of Trondheim
Division of Experimental Physics, University of Trondheim
Report
1982
-
Strand, Knut Arne;
Bøe, Arild;
Dalberg, Peer;
Sikkeland, Torbjørn;
Smidsrød, Olav.
(1982)
Dynamic and Static Light Scattering on Aqueous Solutions of Sodium Alginate.
Macromolecules
Academic article
1979
-
Bøe, Arild;
Elgsaeter, Arnljot;
Oftedal, Gunnhild;
Strand, Knut Arne.
(1979)
Human Spectrin. III. A Study Based on Dynamic and Static Light Scattering.
Acta Chemica Scandinavica
Academic article
-
Strand, Knut Arne.
(1979)
Dynamic and static light scattering on sodium alginate in aqueous solution.
Institutt for Eksperimentalfysikk, Universitetet i Trondheim
Institutt for Eksperimentalfysikk, Universitetet i Trondheim
Doctoral dissertation
1978
-
Dalberg, Peer;
Bøe, Arild;
Strand, Knut Arne;
Sikkeland, Torbjørn.
(1978)
Quasielastic light scattering study of charged polystrene particles in water.
Journal of Chemical Physics
Academic article
Journal publications
-
Strand, Knut Arne;
Bjørkvik, Bård Johan Arnt.
(2018)
Interface light-scattering on a methane-decane system in the near-critical region at 37.8 °C (100 °F).
Fluid Phase Equilibria
Academic article
-
Falnes, Johannes;
Strand, Knut Arne.
(2014)
Dødsfall. TORBJØRN SIKKELAND.
Adresseavisen
Reader opinion piece
-
Bjørkvik, Bård Johan Arnt;
Waaler, Dag;
Sikkeland, Torbjørn;
Strand, Knut Arne;
Strømme, Gunvald Kristian.
(1995)
A versatile interface light-scattering spectrometer.
Measurement Science and Technology
Academic article
-
Bjørkvik, Bård Johan Arnt;
Strømme, Gunvald Kristian;
Sikkeland, Torbjørn;
Strand, Knut Arne;
Waaler, Dag;
Munkerud, Per Kristian.
(1994)
Description of an Interface Light-Scattering Spectrometer with a Cylindrical High-Pressure Scattering Cell including Performance Test on a Model Gas-Condensate System.
Journal of Colloid and Interface Science
Academic article
-
Waaler, Dag;
Strand, Knut Arne;
Strømme, Gunvald Kristian;
Sikkeland, Torbjørn.
(1989)
Dynamic light scattering observation of droplet aggregation in a Winsor type W/O microemulsion system.
Journal of Chemical Physics
Academic article
-
Strand, Knut Arne;
Bøe, Arild;
Dalberg, Peer;
Sikkeland, Torbjørn;
Smidsrød, Olav.
(1982)
Dynamic and Static Light Scattering on Aqueous Solutions of Sodium Alginate.
Macromolecules
Academic article
-
Bøe, Arild;
Elgsaeter, Arnljot;
Oftedal, Gunnhild;
Strand, Knut Arne.
(1979)
Human Spectrin. III. A Study Based on Dynamic and Static Light Scattering.
Acta Chemica Scandinavica
Academic article
-
Dalberg, Peer;
Bøe, Arild;
Strand, Knut Arne;
Sikkeland, Torbjørn.
(1978)
Quasielastic light scattering study of charged polystrene particles in water.
Journal of Chemical Physics
Academic article
Report
-
Bjørkvik, Bård J.A;
Strand, Knut Arne.
(2007)
NFS1-1 K1 Interfacial Tension Measurement.
SINTEF AS
SINTEF AS
Report
-
Strand, Knut Arne;
Bjørkvik, Bård J.
(2006)
Interfacial tension measurement in dodecane-water-bacteria system by laser-light scattering: Supplement No.2.
SINTEF AS
SINTEF AS
Report
-
Bjørkvik, Bård J;
Holt, Torleif;
Strand, Knut Arne.
(2005)
Kristin reservoir fluids: Quantification of wettability, interfacial tensions and gas-in-water and water-in-gas content.
SINTEF AS
SINTEF AS
Report
-
Bjørkvik, Bård J;
Strand, Knut Arne.
(2003)
Interfacial tension measurement in dodecane-water-bacteria system by laser-light scattering.
SINTEF AS
SINTEF AS
Report
-
Bjørkvik, Bård Johan Arnt;
Strand, Knut Arne.
(2001)
Karachaganak well 432 gas condensate interfacial tension measured by laser-light scattering: Un-neutered fluid.
SINTEF Petroleum Research
SINTEF Petroleum Research
Report
-
Bjørkvik, Bård Johan Arnt;
Strand, Knut Arne.
(1998)
Karachaganak gas condensate interfacial tension measured by laser-light scattering.
IKU Petroleum Research
IKU Petroleum Research
Report
-
Strand, Knut Arne;
Waaler, Dag;
Strømme, Gunvald Kristian;
Sikkeland, Torbjørn.
(1986)
BULK OG GRENSEFLATE LYSSPREDNING PÅ OLJE/VANN/SURFAKTANT LØSNINGER III. Rapport januar 1986: Prosjekt for Statoil.
Institutt for eksperimentalfysikk, NTH, Universitetet i Trondheim
Institutt for eksperimentalfysikk, NTH, Universitetet i Trondheim
Report
-
Strand, Knut Arne;
Waaler, Dag;
Strømme, Gunvald Kristian;
Sikkeland, Torbjørn.
(1985)
BULK OG GRENSEFLATE LYSSPREDNING PÅ OLJE/VANN/SURFAKTANT LØSNINGER II.
Rapport januar 1985: Prosjekt for Statoil.
Institutt for eksperimentalfysikk, NTH, Universitetet i Trondheim
Institutt for eksperimentalfysikk, NTH, Universitetet i Trondheim
Report
-
Strand, Knut Arne;
Waaler, Dag;
Strømme, Gunvald Kristian;
Sikkeland, Torbjørn.
(1984)
BULK OG GRENSEFLATE LYSSPREDNING PÅ OLJE/VANN/SURFAKTANT LØSNINGER
Delrapport januar 1984: Prosjekt for Statoil.
Institutt for eksperimentalfysikk, NTH, Universitetet i Trondheim
Institutt for eksperimentalfysikk, NTH, Universitetet i Trondheim
Report
-
Strand, Knut Arne;
Strømme, Gunvald Kristian;
Waaler, Dag;
Sikkeland, Torbjørn.
(1984)
Report on light scattering on a sapphire cell from ROP, France, supplied by Gjedebo, Stavanger 5.3.84.
Division of Experimental Physics, University of Trondheim
Division of Experimental Physics, University of Trondheim
Report
-
Strand, Knut Arne.
(1979)
Dynamic and static light scattering on sodium alginate in aqueous solution.
Institutt for Eksperimentalfysikk, Universitetet i Trondheim
Institutt for Eksperimentalfysikk, Universitetet i Trondheim
Doctoral dissertation
Outreach
2005
-
Academic lectureKowalewski, Espen; Rueslåtten, Ingun; Gilje, Eimund; Sunde, Egil; Bødtker, Gunhild; Lillebø, Bente-Lise Polden. (2005) Interpretation of microbial oil recovery from laboratory experiments. IOR 2005 13th European Symposium on Improved Oil Recovery , Budapest 2005-04-25 - 2005-04-27
2004
-
Academic lectureKowalewski, Espen; Stensen, Jan Åge; Gilje, Eimund; Sunde, Egil; Bødtker, Gunhild; Bjørkvik, Bård Johan Arnt. (2004) Interfacial tension measurements in an oil/water/bacteria system by laser-light scattering. 2004 International Symposium of the Society of Core Analysts , Abu Dhabi 2004-10-05 - 2004-10-09
1997
-
LectureBjørkvik, Bård Johan Arnt; Strand, Knut Arne; Lindeberg, Erik Gøsta Brun; Munkerud, Per Kristian. (1997) Gas condensate interfacial tension measured by light scattering. IBC Conference on Optimisation of Gas Condensate Fields , Aberdeen 1997-06-26 - 1997-06-27
1996
-
Academic lectureLindeberg, Erik Gøsta Brun; Bjørkvik, Bård Johan Arnt; Strand, Knut Arne. (1996) Interface light scattering measurement of low interfacial tension on a gas condensate system at high pressure and temperature. SPE 35427-MS. 1996 SPE/DOE Tenth Symposium on Improved Oil Recovery , Tulsa (OK) 1996-04-21 - 1996-04-24
1984
-
PosterWaaler, Dag; Strand, Knut Arne; Sikkeland, Torbjørn. (1984) A Study of a W/O-microemulsion by Static and Dynamic Light Scattering. Surfactants in Solution , Bordeaux 1984-07-09 - 1984-07-13