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Babak Ommani

Senior Research Scientist

Babak Ommani

Senior Research Scientist

Babak Ommani
Phone: +47 403 32 032
Department: Energy and Transport
Office: Trondheim

Publications and responsibilities

Publication
https://www.sintef.no/en/publications/publication/?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...

Authors Ravinthrakumar Senthuran Kristiansen Trygve Molin Bernard Jean Marie Ommani Babak
Year 2019
Type Journal publication
Publication
https://www.sintef.no/en/publications/publication/?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...

Authors Ommani Babak Berthelsen Petter Andreas Firoozkoohi Reza
Year 2018
Type Report/thesis
Publication
https://www.sintef.no/en/publications/publication/?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...

Authors Ommani Babak Kristiansen Trygve Berget Kjetil
Year 2018
Type Part of a book/report
Publication
https://www.sintef.no/en/publications/publication/?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...

Authors Ravinthrakumar Senthuran Kristiansen Trygve Ommani Babak
Year 2018
Type Part of a book/report
Publication
https://www.sintef.no/en/publications/publication/?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...

Authors Fonseca Nuno Ommani Babak Stansberg Carl Trygve Bøckmann Arne Birknes-Berg Jørn Nestegård Arne Hauteclocque g Baarholm Rolf Jarle
Year 2017
Type Conference lecture and academic presentation
Publication
https://www.sintef.no/en/publications/publication/?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...

Authors Ommani Babak Fonseca Nuno Stansberg Carl Trygve
Year 2017
Type Part of a book/report