• Ice Detection Experimentation Setup Using Infrared and Active Heating 

      Rashid, Taimur; Khawaja, Hassan Abbas; Edvardsen, Kåre (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-07-24)
      The paper shows the possible implementation of Infrared (IR) ice detection technique. The experimental setup is implemented keeping in view of the marine icing phenomena over the ships and offshore structures. The detection mechanism is unique from the passive IR detection by introducing the active heating concept. The intervention of the active heating information inside the IR ice detection system ...
    • Ice Detection of Pure and Saline Ice Using Infrared Signature 

      Rashid, Taimur; Khawaja, Hassan Abbas; Edvardsen, Kåre (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-11-30)
      The paper shows the possible implementation of an Infrared (IR) ice detection technique. In respect of safety in marine operations, saline ice detection can be significant for automated de-icing systems. Experimentation is performed to observe and detect saline and pure ice samples. The discussed detection mechanism is unique and differs from passive IR detection by introducing the self-heating ...
    • Ice Detection Setup Using Infrared and Active Heating 

      Rashid, Taimur; Khawaja, Hassan Abbas; Edvardsen, Kåre (Conference object; Konferansebidrag, 2015)
      Considering the cold environment operations, ice accretion can occur at a rapid pace and can adversely affect the operations. In such scenario, ice detection is useful for the ice mitigation and removal upon the marine and offshore structures. Various techniques exist in the literature to detect the icing mainly utilizing its physical or electromagnetic properties. The parameters measured by these ...
    • Ice shedding from wind turbines 

      Khawaja, Hassan Abbas; Xue, Hui; Eidesen, Hans-Kristian; Andleeb, Zahra; Moatamedi, Mojtaba (Chapter; Bokkapittel, 2024)
      Wind power is an excellent source of renewable energy in areas with sufficient wind resources. Usually, the best locations for wind turbines are on the tops of hills and ridges, where there are lower temperatures [1]. Cold temperatures are responsible for novel challenges [2, 3]. Due to cold climatic conditions, turbine blades are subjected to icing [4]. A number of methods have been proposed and ...
    • Improving Mechanical Grip of Tyres on Snow and Icy Road Surfaces using Finite Element Method 

      Ludvigsen, Sondre; Khawaja, Hassan Abbas (Conference object; Konferansebidrag, 2016)
      Harsh winter conditions are known to be one of the most challenging environments for driving. Although the number of fatal accidents is higher during the summer compared to the winter in Norway (according to Norwegian Highways Authority), the total number of accidents is higher in the winter season. These accidents mainly happen due to loss traction on snowy or icy road surfaces. The loss of traction ...
    • Infrared Detection for Anti-Icing Systems in Ship Operations 

      Rashid, Taimur; Khawaja, Hassan Abbas; Edvardsen, Kåre (Conference object; Konferansebidrag, 2014)
    • Infrared Thermal Signature Evaluation of a Pure and Saline Ice for Marine Operations in Cold Climate 

      Rashid, Taimur; Khawaja, Hassan Abbas; Edvardsen, Kåre; Mughal, Umair Najeeb (Peer reviewed; Journal article; Tidsskriftsartikkel, 2015)
      Marine operations in cold climates are subjected to abundant ice accretion, which can lead to heavy ice loads over larger surface area. For safe and adequate operations on marine vessels over a larger area, remote ice detection and ice mitigation system can be useful. To study this remote ice detection option, lab experimentation was performed to detect the thermal gradient of ice with the infrared ...
    • Infrared Thermal Signature Evaluation of a Pure Ice Block 

      Rashid, Taimur; Khawaja, Hassan Abbas; Edvardsen, Kåre; Mughal, Umair Najeeb (Conference object; Konferansebidrag, 2015-08-23)
      Marine operations in cold climates are subjected to heavy ice accretion, which can lead to heavy ice loads causing safety concerns. Atmospheric and sea spray icing can cause severe ice accretion on structures. Ice detection over the relatively larger surface area of marine platforms and vessels could be significant for ice mitigation and its removal in cold climates. A thermal ice signature ...
    • The International Conference of Multiphysics 2024 

      Khawaja, Hassan Abbas (Conference object; Konferansebidrag, 2023-12)
      The objective of The International Conference of Multiphysics is to share and explore findings on mathematical advances, numerical modelling and experimental validation of theoretical and practical systems in a wide range of applications. The scope of the conference is to address the latest advances in theoretical developments, numerical modelling and industrial application which will promote ...
    • The International Journal of Multiphysics (2023) 

      Khawaja, Hassan Abbas (Conference object; Konferansebidrag, 2023-12)
      The International Journal of Multiphysics publishes peer-reviewed original research articles, review papers and communications in the broadly defined field of Multiphysics. The emphasis of this journal is on the theoretical development, numerical modelling and experimental investigations that underpin Multiphysics studies. The scope of the journal is to address the latest advances in theoretical ...
    • Investigating Ice Nucleation and Heat Transfer Dynamics in Supercooled Liquid Water Using Thermography 

      Khawaja, Hassan Abbas; Keshavarzi, Samaneh; Muhammed, Manaf; Yousuf, Adeel; Virk, Muhammad Shakeel; Harvey, Derek; Momen, Gelareh (Conference object; Konferansebidrag, 2023-12)
      This study delves into the intricate interplay of thermography, ice nucleation, and heat transfer during the phase change from supercooled liquid water to crystallized ice. The phenomena of ice nucleation and its subsequent growth have paramount importance in various fields, including cold climate engineering, atmospheric science, cryopreservation, and refrigeration systems. Our research aims to ...
    • Investigating RANS Turbulence Models for Predicting Airflow Dispersion in Enclosed Environments: Numerical Simulation and Experimental Validation 

      Owolabi, Jibola Obafemi; Dhar, Sushmit; Muhammed, Manaf; Khawaja, Hassan Abbas; Aganovic, Amar; Virk, Muhammad Shakeel (Conference object; Konferansebidrag, 2023-12)
      The dispersion of respiratory aerosol particles in enclosed environments poses a significant challenge to understanding the transmission of airborne infectious diseases, mainly due to the influence of turbulence on the propagation of aerosol particles. Turbulence, with its complex and chaotic nature, is a prevailing phenomenon in a fluid flow. Four widely used Reynolds-Averaged Navier-Stokes (RANS) ...
    • Investigation of Ice-PVC separation under Flexural Loading using FEM Analysis 

      Xue, Hui; Khawaja, Hassan Abbas (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-08-29)
      This paper presents the FEM technique applied in the study of ice separation over a polyvinyl chloride (PVC) surface. A two layer model of ice and PVC is analysed theoretically using Euler-Bernoulli beam theory and the rule of mixtures. The physical samples are prepared by freezing ice over the PVC surfaces. The samples are tested experimentally in a four-point loading setup. The experimental results ...
    • Involvement of Multiphysics in Petroleum Research: Case Study on Shock Tube Experimental Setup 

      Khawaja, Hassan Abbas; Moatamedi, Mojtaba (Conference object; Konferansebidrag, 2014)
    • Marine Icing and Anti/De-icing Systems 

      Rashid, Taimur; Khawaja, Hassan Abbas; Edvardsen, Kåre (Conference object; Konferansebidrag, 2015-12-10)
      Shipping operations are on the rise in the Arctic region. Due to these increased activities, maritime transport operations are encountering significant challenges with respect to the safety and reliability. These shipping operations are comprised of commercial vessels such as oil tankers, container ships, fishing vessels, tourism cruises, research and offshore exploration vessels and icebreakers In ...
    • Measuring the Sea Spray Flux using High-Speed Camera 

      Johansen, Jarle André; Edvardsen, Kåre; Sharma, Puneet; Khawaja, Hassan Abbas (Conference object; Konferansebidrag, 2015-12-10)
      The sea spray contains water droplets that are produced due to sea waves that collide with the marine structures as well as the breaking of waves due to the strong winds. Similarly, fog and precipitation at sea level may contribute to the phenomenon of sea spray containing water droplets of minuscule sizes. Wind characteristics (speed and direction) also has a direct influence on the speed of water ...
    • Multi-fluidic Simulation using Multiphysics tools: Case Study on a LNG Plant 

      Khawaja, Hassan Abbas; Schive, Tor; Edvardsen, Kåre (Conference object; Konferansebidrag, 2014)
    • Multiphysics design optimization for aerospace applications: Case study on helicopter loading hanger 

      Xue, Hui; Khawaja, Hassan Abbas; Moatamedi, Mojtaba (Journal article; Tidsskriftartikkel; Peer reviewed, 2014)
      This paper presents the Multiphysics technique applied in the design optimization of a loading hanger for an aerial crane. In this study, design optimization is applied on the geometric modelling of a part being used in an aerial crane operation. A set of dimensional and loading requirements are provided. Various geometric models are built using SolidWorks® Computer Aided Design (CAD) Package. In ...
    • Multiphysics in Engineering Education: Bridging Theory and Practice 

      Khawaja, Hassan Abbas (Conference object; Konferansebidrag, 2024-02-15)
      Multiphysics, the interdisciplinary field that integrates multiple physical phenomena into a unified framework, has emerged as a pivotal aspect of contemporary engineering education. This abstract explores the profound role of multiphysics in shaping the educational landscape, fostering a holistic approach that transcends traditional disciplinary boundaries. <p> <p>In the ever-evolving realm of ...