Browsing NTNU Open by Author "Dorao, Carlos Alberto"
Now showing items 21-40 of 62
-
Experimental analysis of the pressure characteristic curve of a forced convection boiling flow in single horizontal channel
Doder, Dejan (Master thesis, 2013)Forced convection boiling flow, often referred to as two-phase flow, is a common phenomenon which occurs in many industrial processes. The relationship between the total pressure drop in a channel containing two-phase flow ... -
Experimental and modeling study of the droplet dynamics related to liquid-liquid separators
Bjerknes, Jenny Victoria (Master thesis, 2013)Separators are an integral part of oil and gas processing equipment. A high enough level of separation is needed both due to the sales specifications of the finished products, but also due to the effect poor separation may ... -
Experimental and numerical investigation of oil-water separation
Sørbø, Vegard (Master thesis, 2014)Separation of oil-water mixtures is essential to prepare the productsprior to transportation. This is, among others things, due to salesspecifications, minimisation of corrosion, and reduction of transporta-tion costs. The ... -
Experimental investigation of the impact in the heat transfer coefficient and pressure drop during boiling flow instabilities
Sørum, Mikkel (Master thesis, 2014)High heat transfer rates at reasonably low temperature differences can be obtained by utilizing a boiling fluid. The use of boiling heat transfer is often limited by onset of a heat transfer crisis named the Critical Heat ... -
Experimental Investigations On The Momentum Pressure Drop During Flow Boiling Of R134a
Muszynski, Tomasz; Andrzejczyk, Rafal; Dorao, Carlos Alberto (Journal article; Peer reviewed, 2018)The article presents experimental investigations of the pressure drop during two-phase flow. Experiments were performed for both adiabatic and heated flow of R134a. Obtained flow patterns were compared with the literature. ... -
Experimental study of bubble characteristics and heat transfer in subcooled flow boiling of R-134a
Park, Keun-Soo (Master thesis, 2013)Because of its high heat transfer efficiency, subcooled flow boiling can contribute to the miniaturization of subsea heat exchangers. An experimental investigation was conducted to study the parametric influence on the ... -
Experimental study of density waves oscillations
Ugueto, Luis (Master thesis, 2013)Nowadays, systems based on convective boiling flows are found in a wide variety of industrial applications, such as boiling water reactors, boilers, thermosiphons, heat exchangers, condenser, chemical reactors and some ... -
Experimental study on the characteristics of pressure drop oscillations and their interaction with short-period oscillation in a horizontal tube
Park, Il Woong; Fernandino, Maria; Dorao, Carlos Alberto (Journal article; Peer reviewed, 2018)Long-period oscillations (pressure drop oscillations) and short-period oscillations (superimposed density wave oscillations) have been observed in many studies. However, under which condition the long-period oscillations ... -
Experimental validation of pressure drop models during flow boiling of R134a – effect of flow acceleration and entrainment
Muszynski, Tomasz; Andrzejczyk, Rafal; Dorao, Carlos Alberto (Journal article; Peer reviewed, 2018)A crucial step to assure proficient work of power and process apparatus is their proper design. A wide array of those devices operates within boiling or condensation of the working fluid to benefit from high heat transfer ... -
Exploring the Intersection of Brain–Computer Interfaces and Quantum Sensing: A Review of Research Progress and Future Trends
Liao, Kun; Yang, Zhaochu; Dong, Tao; Zhao, Libo; Pires, Nuno Miguel Matos; Dorao, Carlos Alberto; Stokke, Bjørn Torger; Roseng, Lars Eric; Liu, Wen; Jiang, Zhuangde (Peer reviewed; Journal article, 2023)Brain–computer interfaces (BCIs) can revolutionize how humans interact with technology, but several scientific and technological challenges must be addressed to realize their full potential. Recent developments in quantum-based ... -
Fabrication of nanoplasmonic sensor device using Electron Beam Lithography (EBL) and optimization performance for submicron particle detection
Sanchez Saldana, Diego (Master thesis, 2019)The detection of nanosized particles is playing a main role in the field of protecting the environment and public health nowadays. Online monitoring is necessary to control pollutants in our environment, due to legislation ... -
Heat transfer and pressure drop characteristics of the silicone-based plate heat exchanger
Muszynski, Tomasz; Andrzejczyk, Rafal; Park, Il Woong; Dorao, Carlos Alberto (Journal article; Peer reviewed, 2019)The paper presents an experimental investigation of a silicone based heat exchanger, with passive heat transfer intensification by means of surface enhancement. The main objective of this paper was to experimentally ... -
The heat transfer coefficient similarity between binary and single component flow condensation inside plain pipes
Dorao, Carlos Alberto; Fernandino, Maria (Peer reviewed; Journal article, 2022)To identify the heat transfer mechanisms during flow condensation of binary mixtures inside pipes has motivated vast research in the past decades. While the prediction capabilities of models have substantially improved due ... -
Improving superamphiphobicity by mimicking tree-branch topography
Ding, Wenwu; Dorao, Carlos Alberto; Fernandino, Maria (Peer reviewed; Journal article, 2022)when a droplet impacts on a superhydrophobic structured surface below a certain impact velocity, the droplet can bounce off completely from the surface. However, above such velocity a fraction of the droplet will pin on ... -
Influence of fluids properties and droplet impinging height on Leidenfrost phenomena over a plain silicon surface
Gonzalez Recio, Daniel Tomas (Master thesis, 2017)The need for high heat flux removal has been triggered by the development of new technologies ranging from computers, data centers, medical applications, electric cars, radars, satellite, and lasers, to mention some ... -
Investigations on mixture preparation for two phase adiabatic pressure drop of R134a flowing in 5 mm diameter channel
Muszynski, Tomasz; Andrzejczyk, Rafal; Dorao, Carlos Alberto (Journal article; Peer reviewed, 2017)The article presents detailed two-phase adiabatic pressure drops data for refrigerant R134a. Study cases have been set for a mass flux varying from 200 to 400 kg/m2 s, at the saturation temperature of 19.4 ◦C. Obtained ... -
Mapping of temperature impacts for the RQ-20 PUMA AE military unmanned aerial vehicle - Kartlegging av temperaturpåvirkninger for det militære ubemannede luftfartøyet RQ-20 PUMA AE
Taksdal, Sigbjørn Falk (Master thesis, 2018)Abstract Thermal management of military electronics is a considerable engineering and operational challenge as technological development leads to higher heat generation and the use of electronics increases in all types ... -
Micro-Nano enhanced surfaces for investigation of oil-water separation
Retterstøl, Åsmund Bryne (Master thesis, 2015)Separator are an important part of the oil processing. The fluid mixture extracted from an oil well contains large amount of water, and is separated by using large separators. A gravitational separator relies on the ... -
Modeling and Optimization of LNG Processes
Ødegård, Eirik Tonatiuh (Master thesis, 2012)This thesis presents a solution to an optimization tool for LNG process design. The work includes an open source application developed in order to design and simulate compressors. Although the aim of the work is LNG ... -
Modeling of a centrifugal separator for dispersed gas-liquid flows
Monsen, Gisle Otto Tviberg (Master thesis, 2012)Natural gas is a vital component of the worlds supply of energy. In Norway all the gas can be found offshore where it needs to processed before transport. A vital part of the processing is gas and liquid separation. Current ...