Blar i HVL Open på forfatter "Erland, Sveinung"
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Analysis of the impact of deploying thermal protective immersion suits on evacuation time for passenger ships operating in polar waters
Azizpour, Hooshyar; Galea, Edwin R.; Deere, Steven; Erland, Sveinung; Batalden, Bjørn-Morten; Oltedal, Helle Asgjerd (Peer reviewed; Journal article, 2023)For passenger vessels operating in polar waters, the Polar Code requires that in case of possibility of immersion in polar waters, thermal protective immersion suits (TPIS) should be available for all passengers. Thus, ... -
An experimental analysis of the impact of thermal protective immersion suit and angle of heel on individual walking speeds
Azizpour, Hooshyar; Galea, Edwin R.; Erland, Sveinung; Batalden, Bjørn-Morten; Deere, Steven; Oltedal, Helle Asgjerd (Peer reviewed; Journal article, 2022)The cold environment of Polar Regions introduces additional challenges to maritime safety in situations where it becomes necessary to abandon a vessel. The Polar Code requires all vessels operating in Polar Regions to be ... -
Fast moving smoldering fronts in thin liquid fuel films dispersed on inert porous media
Erland, Sveinung; Meyer, Runald Walter; Hagen, Bjarne Christian (Peer reviewed; Journal article, 2022)An experimental study of smoldering in thin layers of pyrolysis oil on an inert substrate of calcium silicate boards has been conducted. The smoldering fronts propagated with velocities up to 0.4 mm/s, which is significantly ... -
Flame heights and charring on a particle board – An experimental study
Karyaparambil, Dheeraj Dilip; Erland, Sveinung; van Hees, Patrick; Frette, Vidar; Hagen, Bjarne Christian (Peer reviewed; Journal article, 2022)Vertically oriented particle-board samples were exposed to external venting flames to study the fire spread and charring behaviour along a timber façade. Variation in flame height and the height, volume, area, density, and ... -
Induced drag in two dimensions in ideal fluids
Meyer, Runald Walter; Erland, Sveinung (Peer reviewed; Journal article, 2019)In this paper we suggest a model for how a significant part of the drag forces on two-dimensional objects can be derived using the circulation that is naturally maintained around the objects. We assume incompressible and ... -
Let the fast passengers wait: Boarding an airplane takes shorter time when passengers with the most bin luggage enter first
Erland, Sveinung; Bachmat, Eitan; Steiner, Albert (Peer reviewed; Journal article, 2022)Airlines usually organize the passenger queue by letting certain groups of passengers enter the airplane in a specific order. The total boarding time of such airplane boarding policies can be estimated and compared by a ... -
Lorentzian geometry and variability reduction in airplane boarding: Slow passengers first outperforms random boarding
Erland, Sveinung; Kaupužs, Jevgenijs; Steiner, Albert; Bachmat, Eitan (Peer reviewed; Journal article, 2021)Airlines use different boarding policies to organize the queue of passengers waiting to enter the airplane. We analyze three policies in the many-passenger limit by a geometric representation of the queue position and row ... -
Lorentzian-geometry-based analysis of airplane boarding policies highlights “slow passengers first” as better
Erland, Sveinung; Kaupužs, Jevgenijs; Frette, Vidar; Pugatch, Rami; Bachmat, Eitan (Peer reviewed; Journal article, 2019)We study airplane boarding in the limit of a large number of passengers using geometric optics in a Lorentzian metric. The airplane boarding problem is naturally embedded in a (1+1)-dimensional space-time with a flat ... -
The mesoscale order of nacreous pearls
Gim, Jiseok; Koch, Alden; Otter, Laura M.; Savitzky, Benjamin H.; Erland, Sveinung; Estroff, Lara A.; Jacob, Dorrit E.; Hovden, Robert (Peer reviewed; Journal article, 2021)A pearl’s distinguished beauty and toughness are attributable to the periodic stacking of aragonite tablets known as nacre. Nacre has naturally occurring mesoscale periodicity that remarkably arises in the absence of ... -
Onset of smoldering fires in storage silos: Susceptibility to design, scenario, and material parameters
Villacorta, Edmundo; Haraldseid, Ingunn; Mikalsen, Ragni Fjellgaard; Hagen, Bjarne Christian; Erland, Sveinung; Kleppe, Gisle Yngvar Romslo; Krause, Ulrich; Frette, Vidar (Peer reviewed; Journal article, 2021)Biomass fuels in large storage units are prone to self-heating and ignition causing smoldering fires. Here, the susceptibility of such ignition processes to parameters is explored through small-scale experiments. In a silo ...