Fakultet for ingeniørvitenskap og teknologi: Recent submissions

Now showing items 901-920 of 927

    • Selvuttørkingsevne og kondensfare for yttervegger i passivhus 

      Johansen, Øyvind Vollnes (Master thesis; Mastergradsoppgave, 2016-11-03)
      Etterspørselen av bygg som er oppført etter passivhusstandard øker i Norge, men det er til nå ikke blitt forsket mye på hvordan disse veggene, bygd etter passivhusstandard, vil oppføre seg i norsk klima. Det er blitt undersøkt ytterveggens evne til selvutørking og eventuell kondensfare som kan oppstå, som følge av lokalisering i ulike klimasoner og i forhold til himmelretning. Resultatene fra ...

    • Lokalklimaanalyse for bygg og utemiljø 

      Størkersen, Ellen Gjersdal (Master thesis; Mastergradsoppgave, 2016-11-07)
      Rapporten tar for seg en lokalklimatisk analyse i forbindelse med utbygging av felt B10 og B11 på Skytterhusfjellet, Kirkenes. Det teoretiske grunnlaget tar for seg klimatiske faktorer, komfort og strømningslære. Numeriske simuleringer er utført for å studere virkninger av snø- og vindforhold. Based on theoretical aspects on the influence from climatic factors, comfort and fluid mechanics, this ...

    • Energisparetiltak fra et kost- & nytteperspektiv, vurdert mot energimerkeforskriften 

      Hessedal, Johan (Master thesis; Mastergradsoppgave, 2016-11-01)
      Hensikten med masteroppgaven har vært å identifisere ulike bygge- og installasjonstekniske tiltak som kan utføres for å redusere energiforbruket, og som samtidig forbedrer energimerket på eksisterende yrkesbygninger i Norge. Målet med oppgaven var videre å se på ringvirkningene av redusert energiforbruk. Det vil si et redusert bruk av fossile brensler, en redusering av bygningenes klimagassfotavtrykk, ...

    • Quadrotor modeling and control 

      Kristiansen, Stig Espen (Master thesis; Mastergradsoppgave, 2016-11-03)
      In this thesis a mathematical quadrotor model based on cascade modeling theory, using a passivity-based control solution is derived and presented. The rotation and translation cascades are rst decoupled, modeled mathematically and simulated separately to test individual control solutions and stability, followed by total system modeling and simulations to verify the control solutions and stability ...

    • Ku-band patch antenna design 

      Johansen, Martin (Master thesis; Mastergradsoppgave, 2016-11-03)
      The market for on-the-move satellite communication is increasing, and phased array antennas have characteristics that makes them suited for this. In this thesis design and tuning of a wide-band microstrip patch antenna element for a Ku-band antenna array is presented. The SSFIP structure with a resonating aperture is used for the antenna element, and double resonance allows for operation at both ...

    • Immunterapi må tilbys til alle 

      Måløy, Marthe (Chronicle; Kronikk, 2016-09-20)

    • Samarbeid for selvbevisste 

      Måløy, Marthe (Chronicle; Kronikk, 2016-08-25)

    • Numerical simulation of the dynamic response in pulse-loaded fibre–metal-laminated plates 

      Nwankwo, Ebuka; Fallah, Arash Soleiman; Moatamedi, Mojtaba; Louca, Luke A. (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-07-27)
      This article presents a three-dimensional constitutive model to replicate the dynamic response of blast-loaded fibre–metal laminates made of 2024-0 aluminium alloy and woven composite (glass fibre–reinforced polypropylene). Simulation of the dynamic response is challenging when extreme localised loads are of concern and requires reliable material constitutive models as well as accurate modelling ...

    • Investigation of the Structure of Airflow Behind a Porous Fence Aided by CFD Based Virtual Sensor Data 

      Mustafa, Mohamad; Xu, Yizhong (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-02-28)
      Physical experiments have difficulties to thoroughly investigate the full structure of air flow behind a porous fence. Physical measurement sensors have their limitations of data acquisitions in turbulent air flow. Computational Fluid Dynamics (CFD) technique provides an infinite number of virtual sensors that allows producing quantitative CFD based virtual sensors data for users. In this paper, ...

    • Ownership Identification of Reindeer Calf Using Wireless Sensor Networks (WSN) 

      Mustafa, Mohamad (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-08-10)
      This paper presents a technique for identifying the ownership of new-born reindeer claves using wireless sensor networks (WSNs), which is an important tool that can be used to acquire useful information about animals’ activities and movements. Reindeer are semi wild and they give birth while in the wild. Although reindeer cows usually carry identification tags or signs of their owners, it is ...

    • Measurement of Wind Flow Behavior at the Leeward Side of Porous Fences Using Ultrasonic Anemometer Device 

      Mustafa, Mohamad; Xu, Yizhong; Haritos, George; Kenji, Kosugi (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-01)
      Efficiency of wind fences is evaluated by the reduction of wind velocity and the effective shelter area behind the fence. Fence porosity is the most influential structural parameters in the porous fence design, and has significant impact on the structure of wind velocity and turbulence leeward. In this work, three fences with porosity of 23%, 35% and 45% have been tested under 10m/s inlet velocity ...

    • Quantitative analysis of accuracy of voidage computations in CFD-DEM Simulations 

      Khawaja, Hassan Abbas; Scott, Stuart A.; Virk, Muhammad Shakeel; Moatamedi, Mojtaba (Journal article; Tidsskriftartikkel; Peer reviewed, 2012)

    • Design of water shock tube for testing shell materials 

      Ji, Hongjuan; Mustafa, Mohamad; Khawaja, Hassan Abbas; Ewan, Bruce C.; Moatamedi, Mojtaba (Journal article; Tidsskriftartikkel; Peer reviewed, 2014-04-15)
      This paper presents design considerations for a shock tube experimental rig used to investigate the dynamic failure mechanisms of shell geometries subjected to water shock impact loading. In such setup, it is desirable that the drive pressure used within the tube can provide a wide range of impulsive loads on the test structures and some flexibility can be achieved on the applied pulse durations. ...

    • Modeling and simulation of space debris distribution 

      Bredeli, Thomas Iversen (Master thesis; Mastergradsoppgave, 2013-07-01)

    • Aerodynamic Modeling and Estimation of a Fixed-wing UAV 

      Andersen, Tom Stian (Master thesis; Mastergradsoppgave, 2013-06-20)

    • Weighted Hardy-Type Inequalities in Variable Exponent Morrey-Type Spaces 

      Lukkassen, Dag; Persson, Lars Erik; Samko, Stefan; Wall, Peter (Journal article; Peer reviewed; Tidsskriftartikkel, 2013)
      We study the p(.) -> q(.) boundedness of weighted multidimensional Hardy-type operators H-w(alpha(.)) and H-w(alpha(.)) of variable order alpha(x), with radial weight w(vertical bar x vertical bar), from a variable exponent locally generalized Morrey space L-p(.),L-phi(.)(R-n, w) to another L-q(.),L-psi(.)(R-n, w). The exponents are assumed to satisfy the decay condition at the origin and infinity. ...

    • Reiterated homogenization of nonlinear monotone operators in a general deterministic setting 

      Lukkassen, Dag; Nguetseng, Gabriel; Nnang, Hubert; Wall, Peter (Journal article; Peer reviewed; Tidsskriftartikkel, 2009)
      We study reiterated homogenization of a nonlinear non-periodic elliptic differential operator in a general deterministic setting as opposed to the usual stochastic setting. Our approach proceeds from an appropriate notion of convergence termed reiterated Σ-convergence. A general deterministic homogenization theorem is proved and several concrete examples are studied under various structure hypotheses ...

    • Atmospheric icing on wind turbines : Modeling and consequences for energy production 

      Homola, Matthew Carl (Doctoral thesis; Doktorgradsavhandling, 2011)

    • Numerical Study of Atmospheric Ice Accretion on Various Geometric Cross-sections 

      Virk, Muhammad Shakeel (Journal article; Tidsskriftartikkel; Peer reviewed, 2011)

    • Ubemannede flaksende mikrofly 

      Oland, Espen (Journal article; Tidsskriftartikkel, 2013)