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Anders Lennart Östman

Seniorforsker

Anders Lennart Östman

Seniorforsker

Anders Lennart Östman
Telefon: +47 482 21 867
Avdeling: Skip og havkonstruksjoner
Kontorsted: Trondheim

Publikasjoner og ansvarsområder

Publikasjon
https://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1781509

The additional resistance due to roughness is studied by means of CFD simulations. The KVLCC2 hull at full-scale Reynolds number is considered as a test case. A wall function formulation is used to model the rough wall turbulent boundary layer, where the roughness function is based on data from towi...

År 2019
Type Konferansebidrag og faglig presentasjon
Publikasjon
https://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1598788

Recently, a method for numerical reproduction of measured irregular wave events has been developed. The measured motion of the wave maker flaps defines the wave kinematics at the boundary of the numerical simulation in order to generate the waves. When such data are not available, the control signal...

Forfattere Bachynski Erin Elizabeth Pakozdi Csaba Östman Anders Lennart Stansberg Carl Trygve
År 2018
Type Tidsskriftspublikasjon
Publikasjon
https://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1571972

Effect of roughness on frictional resistance is investigated experimentally and numerically. Resistance tests are performed with several plates coated with different paints, which have different roughness. Front plate is 4 m long and aft plates are 6 m long resulting in a total hydrodynamic length o...

År 2017
Type Konferansebidrag og faglig presentasjon
Publikasjon
https://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1505407

A procedure is presented describing how to estimate realistic loads using combined numerical and model test data. Measured platform motions are imposed on the structure during the CFD analysis. The combination of the wave matching procedure with the imposed measured platform motion gives a very good...

Forfattere Pakozdi Csaba Östman Anders Lennart Stansberg Carl Trygve Vestbøstad Tone Margrete Gran Abrahamsen Bjørn Christian Økland Ole David Lian Gunnar
År 2017
Type Del av bok/rapport
Publikasjon
https://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1396269

Recently, a method for numerical reproduction of measured irregular wave events has been developed. The measured motion of the wave maker flaps defines the wave kinematics at the boundary of the numerical simulation in order to generate the waves as described in (Pakozdi, Kendon, & Stansberg, 20...

Forfattere Pakozdi Csaba Östman Anders Lennart Bachynski Erin Elizabeth Stansberg Carl Trygve
År 2016
Type Del av bok/rapport
Publikasjon
https://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1396129

In order to provide qualitative and quantitative information on the hydrodynamics loads during green water events on a module on the deck of a TLP in 10000-year conditions, MARINTEK has carried out CFD simulations. This paper presents extreme wave events and corresponding hydrodynamics loads on the ...

Forfattere Pakozdi Csaba Östman Anders Lennart Ji Guomin Stansberg Carl Trygve Reum Ola Ovrebo Stig Vestbøstad Tone Margrete Gran Sorvaag Christian Ersland Jon
År 2016
Type Del av bok/rapport