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Babak Ommani

Seniorforsker

Babak Ommani

Seniorforsker

Babak Ommani
Telefon: +47 403 32 032
Avdeling: Energi og transport
Kontorsted: Trondheim

Publikasjoner og ansvarsområder

Publikasjon
https://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1717837

The piston and first sloshing modes of two-dimensional moonpools with recess are investigated. Dedicated forced heave experiments are carried out. Different recess lengths are tested from 1/4 to 1/2 of the length of the moonpool at the mean waterline. A theoretical model to calculate the natural fre...

Forfattere Ravinthrakumar Senthuran Kristiansen Trygve Molin Bernard Jean Marie Ommani Babak
År 2019
Type Tidsskriftspublikasjon
Publikasjon
https://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1641723

This report presents results from hydrodynamic analysis of interaction between glacial ice and semisubmersible drilling units, as part of the Petroleum Safety Authority's project "NORD ST20 Loads, design and operation of floaters in the northern area". The overall objective of the study ha...

Forfattere Ommani Babak Berthelsen Petter Andreas Firoozkoohi Reza
År 2018
Type Rapport/avhandling
Publikasjon
https://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1613787

Estimating moonpool piston mode response at resonance is important for operation safety. This is a difficult task, in particular, due to nonlinear nature of the moonpool response connected to the damping imposed by the flow separation at the moonpool’s inlet. In the present work, the applicability o...

Forfattere Ommani Babak Kristiansen Trygve Berget Kjetil
År 2018
Type Del av bok/rapport
Publikasjon
https://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1613742

Moonpool resonance is investigated in a two-dimensional setting in terms of regular, forced heave motions of a model with moonpool with different rectangular-shaped recess configurations. A recess is a reduced draft zone in the moonpool. Dedicated experiments were carried out. The model consisted of...

Forfattere Ravinthrakumar Senthuran Kristiansen Trygve Ommani Babak
År 2018
Type Del av bok/rapport
Publikasjon
https://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1503803

Abstract The paper identifies the wave drift forces and low frequency damping induced by a wide range of extreme sea conditions on two floating units based on model test data, assesses the limitations of today's numerical procedures and proposes solutions to overcome the limitations. Since wave curr...

Forfattere Fonseca Nuno Ommani Babak Stansberg Carl Trygve Bøckmann Arne Birknes-Berg Jørn Nestegård Arne Hauteclocque g Baarholm Rolf Jarle
År 2017
Type Konferansebidrag og faglig presentasjon
Publikasjon
https://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1503737

Today’s industry practice assumes wave drift forces on floating structures can be computed from zero current wave drift force coefficients for the stationary floater, while simplified correction models introduce current effects and slow drift velocity effects. The paper presents an alternative appro...

Forfattere Ommani Babak Fonseca Nuno Stansberg Carl Trygve
År 2017
Type Del av bok/rapport