Browsing NTNU Open by Author "Dorao, Carlos Alberto"
Now showing items 41-60 of 60
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On the scaling of convective boiling heat transfer coefficient
Paul, Subhanker; Fernandino, Maria; Dorao, Carlos Alberto (Peer reviewed; Journal article, 2021)Flow boiling has been widely used during the last century, but the key mechanisms controlling the heat transfer process still remain elusive. In the particular case of convective flow boiling inside a heated pipe, most of ... -
Optimization of Energy and Exergy Consumption in MEG Regeneration Processes
Billington, Henrik Reymert (Master thesis, 2009)Monoethylene glycol (MEG) is commonly used for hydrate inhibition in fields that require continuous injection. Traditional processes for regeneration and reclamation of MEG require significant amounts of heat. Reclamation ... -
The overlooked role of pressure oscillations on heat transfer deterioration during self-sustained flow oscillations
Paul, Subhanker; Paul, Suparna; Fernandino, Maria; Dorao, Carlos Alberto (Peer reviewed; Journal article, 2020)The naturally occurring oscillations during flow boiling inside a heated pipe under specific conditions are known to hinder the system performance. Although substantial research has been done to reveal the occurrence and ... -
Phase-Field Models for Two-Phase Flows Using the Least-Squares Method
Park, Keunsoo (Doctoral theses at NTNU;2017:299, Doctoral thesis, 2017)The correct representation of the interface dynamics in two–phase flows plays an important role in the understanding of multiphase flow phenomena. There are many numerical methods available to describe the interface dynamics, ... -
Reconsidering the influence of the mass flux during nucleate flow boiling in a horizontal heated pipe
Paul, Subhanker; Paul, Suparna; Fernandino, Maria; Dorao, Carlos Alberto (Journal article; Peer reviewed, 2021) -
A redefined energy functional to prevent mass loss in phase-field methods
Kwakkel, Marcel; Fernandino, Maria; Dorao, Carlos Alberto (Peer reviewed; Journal article, 2020)Phase-field modeling has gained considerable attention for the study of two-phase systems. The method consists of introducing a field that can represent the state of matter or the atomic species concentration. In this way, ... -
Relaxation phase during droplet impact on superhydrophobic surfaces with high contact angle hysteresis
Zhang, Wenjing; Dorao, Carlos Alberto; Fernandino, Maria (Peer reviewed; Journal article, 2023)The droplet impact process on a solid surface is divided into a spreading phase where the droplet reaches the maximum deformation followed by a retracting phase. However, in the case of surfaces with high contact angle ... -
Sensitivity Analysis of Proposed LNG liquefaction Processes for LNG FPSO
Pwaga, Sultan Seif (Master thesis, 2011)The four liquefaction processes proposed as a good candidate for LNG FPSO are simulated and evaluated. These processes include a single mixed refrigerant (SMR), dual mixed refrigerant (DMR), Niche LNG ( CH4 and N2 process) ... -
Simple and general correlation for heat transfer during flow condensation inside plain pipes
Dorao, Carlos Alberto; Fernandino, Maria (Journal article; Peer reviewed, 2018)This work proposes a new general and simple model to determine the local flow condensation heat transfer coefficient inside plain pipes. The model considers two regimes corresponding to high mass fluxes and/or high ... -
Study droplet-wire impact and its effect in the design of gas scrubbers
Strøm, Andreas Wathne (Master thesis, 2011)In this thesis droplet- wire impact and droplet fragmentation in a free stream has been studied experimentally. Impacting droplets of uniform size, 4 different wire sizes and 3 different impact velocities has been tested ... -
Study of impacting droplet on plain and micro-nano enhanced surfaces using Electron Beam Lithography (EBL)
Sanchez Saldana, Diego (Master thesis, 2017)Compact systems with high power densities are being vastly designed and fabricated in the present. These include electronic devices, CPU chips, telecom equipment, micro-chemical reactors, micro-fuel cell combusts, power ... -
Study of the Droplet-Interface Dynamics Related to Liquid-Liquid Separators
Sveier, Marthin (Master thesis, 2012)A widespread use of liquid liquid separators are taking place in many industrial processes, especially in production of hydrocarbons. The separators in oil production are used to separate water from oil, increasing the ... -
Study of the parameters to generate different sizes of micro-droplets
Vera Palazon, Antonio Jose (Master thesis, 2013)Separators are regarded as an integral part of oil and gas processing equipment. Because of the sales specification of the finished products, a high level of separation is needed. The separators that are available today ... -
Thermal two-phase flow with a phase-field method
Park, Keunsoo; Fernandino, Maria; Dorao, Carlos Alberto (Journal article; Peer reviewed, 2018)Phase field methods have become of great interest for the simulation of droplet and bubble dynamics, moving free interfaces and more recently phase change phenomena. One example is the Navier–Stokes–Korteweg (NSK) equations. ... -
Toward Surfaces with Droplet Impact Robustness and Low Contact Angle Hysteresis
Ding, Wenwu; Dorao, Carlos Alberto; Fernandino, Maria (Peer reviewed; Journal article, 2022)Superhydrophobic surfaces show excellent water repellent performance. However, liquid impalement occurs when a droplet impacts on the surface at high velocity. To achieve higher resistance to liquid impalement at the same ... -
Towards the incorporation of surface acoustic waves for improving the detection of nanoplasmonic biosensors
Mathiesen, Anne-Marte Padøy (Master thesis, 2021)Kreft er en av de ledende dødsårsakene i verden. Med Verdens helseorganisasjon sin forventede økning i antall nye krefttilfeller, vil tidlig kreftpåvisning og -diagnose være nøkkelfaktorer for å redusere dødeligheten og ... -
Water droplet dynamics on a heated nanowire surface
Auliano, Manuel; Auliano, Damiano; Fernandino, Maria; Zhang, Peng; Dorao, Carlos Alberto (Journal article; Peer reviewed, 2018)When a liquid droplet is deposited onto a heated surface, evaporation occurs. If the temperature of the surface is sufficiently high, bubbles are released from activated nucleation sites, making the heat transfer more ... -
Water-repellent surfaces consisting of nanowires on micro-pyramidal structures
Zhang, Wenjing; Ding, Wenwu; Fernandino, Maria; Dorao, Carlos Alberto (Journal article; Peer reviewed, 2019)Super-repellent surfaces are relevant for several practical applications, such as water collection and self-cleaning and anti-icing surfaces. However, designing surfaces that can maintain their super-repellency when the ... -
Water-Repellent Surfaces Consisting of Nanowires on Micro-Pyramidal Structures
Zhang, Wenjing; Ding, Wenwu; Fernandino, Maria; Dorao, Carlos Alberto (Peer reviewed; Journal article, 2019)Super-repellent surfaces are relevant for several practical applications, such as water collection and self-cleaning and anti-icing surfaces. However, designing surfaces that can maintain their super-repellency when the ... -
Wetting State Transitions over Hierarchical Conical Microstructures
Park, Il Woong; Fernandino, Maria; Dorao, Carlos Alberto (Journal article; Peer reviewed, 2018)Advancing in a better understanding of the physics of wetting requires to be able to develop surfaces with well‐controlled roughness by controlling the microstructure morphology. In this study, patterned truncated cones ...