• Derivative-free trust region optimization for robust well control under geological uncertainty 

  Silva, Thiago Lima; Bellout, Mathias; Giuliani, Caio M.; Camponogara, Eduardo; Pavlov, Alexey (Peer reviewed; Journal article, 2022)

  A Derivative-Free Trust-Region (DFTR) algorithm is proposed to solve the robust well control optimization problem under geological uncertainty. Derivative-Free (DF) methods are often a practical alternative when gradients ...

• Increasing catch efficiency for Nephrops in deep-water shrimp (Pandalus borealis) trawl fisheries 

  Ingólfsson, Ólafur Arnar; Jørgensen, Terje; Sistiaga, Manu; Herrmann, Bent; Kvalvik, Liz Beate Kolstad (Peer reviewed; Journal article, 2022)

  In Skagerrak and the North Sea, coastal vessels harvest deep-water shrimp (Pandalus borealis) in a mixed fishery, in which catches of Nephrops (Nephrops norvegicus) are of economic importance for the fleet. Fishermen ...

• Solid-State Hydrogen Storage Properties of Ti–V–Nb–Cr High-Entropy Alloys and the Associated Effects of Transitional Metals (M = Mn, Fe, Ni) 

  Cheng, Bo; Li, Yunkai; Li, Xiaoxi; Ke, Huibin; Wang, Liang; Cao, Tangqing; Wan, Di; Wang, Benpeng; Xue, Yunfei (Journal article, 2022)

  Recently, high-entropy alloys (HEAs) designed by the concepts of unique entropy-stabilized mechanisms, started to attract widespread interests for their hydrogen storage properties. HEAs with body-centered cubic (BCC) ...

• Semi-empirical prediction of dam height and stability of dams formed by rock slope failures in Norway 

  Oppikofer, Thierry; Hermanns, Reginald; Jakobsen, Vegard Utstøl; Böhme, Martina; Nicolet, Pierrick; Penna, Ivanna (Peer reviewed; Journal article, 2020)

  Based on an inventory of 69 dams formed by rock slope failures in southwestern Norway and published inventories from other parts of the world, we developed semi-empirical relationships linking the maximum dam height (HD.max ...

• Towards comparable carbon credits: Harmonization of lca models of cellulosic biofuels 

  de Souza, Nariê Rinke Dias; Klein, Bruno Colling; Chagas, Mateus Ferreira; Cavalett, Otávio; Bonomi, Antonio (Peer reviewed; Journal article, 2021)

  Decarbonization programs are being proposed worldwide to reduce greenhouse gas (GHG) emissions from transportation fuels, using Life Cycle Assessment (LCA) models or tools. Although such models are broadly accepted, varying ...

• Døren - det svakeste leddet 

  Fagerheim, Sigrid; Wøllo, Ingrid (Master thesis, 2022)

  For å sikre tilstrekkelig brannsikkerhet i byggverk er det satt krav til implementering av branntekniske tiltak. At tiltakene utarbeides i henhold til krav og opprettholder sin tiltenkte funksjon i bruksfasen, kan imidlertid ...

• Døren - det svakeste leddet 

  Fagerheim, Sigrid; Wøllo, Ingrid (Master thesis, 2022)

  For å sikre tilstrekkelig brannsikkerhet i byggverk er det satt krav til implementering av branntekniske tiltak. At tiltakene utarbeides i henhold til krav og opprettholder sin tiltenkte funksjon i bruksfasen, kan imidlertid ...

• Brannsikkerhet i omsorgsboliger 

  Skalmerås, Marthe Muri (Master thesis, 2022)

  Omsorgsbolig er et bredt begrep som omfatter en varierende brukergruppe med økende grad av pleie- og omsorgsbehov. Definisjonen av omsorgsboligen er derimot tvetydig, som gjør at brannkrav og sikkerhetsnivå tolkes ulikt ...

• Mellommenneskelige utfordringer i samspillet mellom landorganisasjon og fartøy i en implementeringsprosess 

  Drivenes, Elise Waage; Monsen, Karoline Sofie Mandelid (Master thesis, 2022)

  SAMMENDRAG Bakgrunn: Installasjon av batteri krever en omfattende implementeringsprosess med flere involverte roller. Rollene bidrar til mellommenneskelige faktorer som har innvirkning på implementeringsprosessen. Formål: ...

• A multiple-resolution scheme for DNS of scalar fields in turbulent flows 

  Hellen, Tommy (Master thesis, 2022)

  For turbulente strømninger med tilstedeværelse av et aktivt eller passivt skalarfelt, tilsvarende Kolmogorov-skalaen η, er de minste skalaene hvor skalarkonsentrasjon transporteres definert som Batchelor-skalaen λ_B. Når ...

• Economic and Energy Performance of Heating and Ventilation. Systems in Deep Retrofitted Norwegian Detached Houses 

  Heide, Vegard; Thingbø, Håkon; Lien, Anne Gunnarshaug; Georges, Laurent (Peer reviewed; Journal article, 2022)

  The aim of this study was to evaluate the life-cycle costs (LCC) and energy performance of different heating and ventilation systems (HVAC) in deep-energy renovation of Norwegian detached houses. Eight different HVAC ...

• Comment on “How green is blue hydrogen?" 

  Romano, Matteo C.; Antonini, Cristina; Bardow, André; Bertsch, Valentin; Brandon, N.P.; Brouwer, Jack; Campanari, Stefano; Crema, Luigi; Dodds, Paul E.; Gardarsdottir, Stefania Osk; Gazzani, Matteo; Kramer, Gert Jan; Lund, Peter D.; Mac Dowell, Niall; Martelli, Emanuele; Mastropasqua, Luca; McKenna, Russell; Monteiro, Juliana Garcia Moretz-Sohn; Paltrinieri, Nicola; Pollet, Bruno; Reed, Jeffrey G.; Schmidt, Thomas Justus; Vente, Jaap; Wiley, Dianne (Peer reviewed; Journal article, 2022)

  This paper is written in response to the paper “How green is blue hydrogen?” by R. W. Howarth and M. Z. Jacobson. It aims at highlighting and discussing the method and assumptions of that paper, and thereby providing a ...

• Optimization of Information Management for Dynamic Risk Analysis of Large-scale Power Grids 

  Pacevicius, Michael (Doctoral theses at NTNU;2022:308, Doctoral thesis, 2022)

  Modern societies strongly rely on the reliable functioning of power grids. However, the management of such infrastructures is a challenging task. It requires the existence of efficient solutions enabling adequate decision ...

• Comparison of the condition of steel fiber-reinforced shotcrete with water-glass and alkali-free activators after more than 20 years of service in a subsea road tunnel 

  Manquehual Mery, Cristobal Javier; Jakobsen, Pål Drevland; Holter, Karl Gunnar; De Weerdt, Klaartje; Danner, Tobias Alexander; Bruland, Amund (Peer reviewed; Journal article, 2022)

  The in-service condition of steel fiber-reinforced shotcrete installed more than 20 years ago as single-shell rock support lining in the Nordkapp subsea road tunnel was investigated. The novelty of this study is the ...

• Homogenizing GPS Integrated Water Vapor Time Series: Benchmarking Break Detection Methods on Synthetic Data Sets 

  Van Malderen, Roeland; Pottiaux, E.; Klos, A.; Domonkos, P.; Elias, M.; Ning, T.; Bock, O.; Guijarro, J.; Alshawaf, F.; Hoseini, Mostafa; Quarello, A.; Lebarbier, E.; Chimani, B.; Tornatore, V.; Zengin Kazancı, S.; Bogusz, J. (Peer reviewed; Journal article, 2020)

  We assess the performance of different break detection methods on three sets of benchmark data sets, each consisting of 120 daily time series of integrated water vapor differences. These differences are generated from the ...

• Analysis of ESAFORM 2021 cup drawing benchmark of an Al alloy, critical factors for accuracy and efficiency of FE simulations 

  Habraken, A.M.; Aksen, T.A.; Alves, J.L.; Amaral, R.L.; Betaieb, E.; Chandola, N.; Corallo, L.; Cruz, D.J.; Engel, B.; Esener, E.; Firat, M.; Frohn-Sörensen, P.; Galán-López, J.; Ghiabakloo, H.; Kestens, L.; Lian, J.; Lingam, R.; Liu, W.; Ma, Jun; Menezes, L.F.; Nguyen-Minh, T.; Miranda, S.S.; Neto, D.M.; Pereira, A.; Prates, P.A.; Reuter, J.; Revil-Baudard, B.; Rojas-Ulloa, C.; Sener, B.; Shen, F.; Bael, A.V.; Verleysen, P.; Barlat, F.; Cazacu, O.; Kuwabara, T.; Lopes, A.; Oliveira, M.C.; Santos, A.D.; Vincze, G. (Peer reviewed; Journal article, 2022)

  This article details the ESAFORM Benchmark 2021. The deep drawing cup of a 1 mm thick, AA 6016-T4 sheet with a strong cube texture was simulated by 11 teams relying on phenomenological or crystal plasticity approaches, ...

• Effekten av konkave og konvekse kurvaturer i horisontalplanet for stabilitetsanalyser 

  Tezare, Noah Ukbu; Halvarsson, Rebecca Lagmandsveen (Master thesis, 2022)

  2D-analyser er ofte foretrukne fremfor 3D-analyser ved vurdering av skråningsstabilitet i den geotekniske bransjen. Årsaken for dette er at 2D-analyser ofte er konservative, i tillegg til at de er enkle i bruk. Imidlertid ...

• Gas switching technology: Economic attractiveness for chemical looping applications and scale up experience to 50 kWth 

  Ugwu, Ambrose; Arnaiz del Pozo, Carlos; Zaabout, Abdelghafour; Nazir, Shareq Mohd; Kalendar, Nimet Uzun; Cloete, Schalk Willem Petrus; Szima, Szabolcs; Fogarasi, Szabolcs; Donat, Felix; van Diest, Geert; Cloete, Jan Hendrik; Jiménez Álvaro, Ángel; Albertsen, Knuth; Cormos, Ana-Maria; Cormos, Calin-Cristian; Amini, Shahriar (Peer reviewed; Journal article, 2022)

  Gas switching technology (GST) was introduced to facilitate operation and scale-up of pressurized chemical looping-based technologies thus bringing the expected benefits of reducing costs and energy penalty of CO2 capture. ...

• Ballistic-Limit Velocities for 7.62 mm APM2 Bullets and Aluminum Alloy Armor Plates 

  Forrestal, M.J.; Warren, T.L.; Holmen, Jens Kristian (Journal article; Peer reviewed, 2021)

  In a previous paper, we presented a scaling law for the ballistic-limit velocity for the 7.62 mm APM2 bullet and aluminum armor plates. This scaling law predicts that the ballistic-limit velocity is proportional to the ...

• Effekten av konkave og konvekse kurvaturer i horisontalplanet for stabilitetsanalyser 

  Tezare, Noah Ukbu; Halvarsson, Rebecca Lagmandsveen (Master thesis, 2022)

  2D-analyser er ofte foretrukne fremfor 3D-analyser ved vurdering av skråningsstabilitet i den geotekniske bransjen. Årsaken for dette er at 2D-analyser ofte er konservative, i tillegg til at de er enkle i bruk. Imidlertid ...

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