Blar i Institutt for energi og prosessteknikk på tittel
Viser treff 4077-4096 av 4143
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Water droplet dynamics on a heated nanowire surface
(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 Droplets Settling in Crude Oil: Effect of Neighbouring Droplets and Temperature
(Master thesis, 2014)Gravity separation is a critical operation in oil and gas processing, both in terms of attaining specifications for finished products and to protect equipment downstream of the gravity separator. Liquid-liquid gravity ... -
Water waves in the presence of sub-surface shear: developing an experiment
(Master thesis, 2016)The planning and analysis of a laboratory set-up for examining the behaviour of water waves in the presence of sub-surface shear is presented in the following work. Water waves propagate on shear currents in many important ... -
Water-repellent surfaces consisting of nanowires on micro-pyramidal structures
(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
(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 ... -
WaterMet2: a tool for integrated analysis of sustainability-based performance of urban water systems
(Journal article; Peer reviewed, 2014)This paper presents the “WaterMet2 ” model for long-term assessment of urban water system (UWS) performance which will be used for strategic planning of the integrated UWS. WaterMet2 quantifies the principal water-related ... -
Wave propagation in multicomponent flow models
(Journal article; Peer reviewed, 2010)We consider systems of hyperbolic balance laws governing flows of an arbitrary number of components equipped with general equations of state. The components are assumed to be immiscible. We compare two such models: one in ... -
Weakly nonlinear broadband and multi-directional surface waves on an arbitrary depth: A framework, Stokes drift, and particle trajectories
(Peer reviewed; Journal article, 2021)Surface gravity waves in coastal waters are broadband and multi-directional, whose quadratic properties are of considerable engineering and scientific interest. Based on a Stokes expansion and an envelope-type framework, ... -
Weakly nonlinear surface waves on vertically sheared currents
(Doctoral theses at NTNU;2024:57, Doctoral thesis, 2024)Extreme waves, also known as rogue waves, have much larger heights than surrounding waves, which are of great danger to ships and coastal structures. A subsurface shear current is able to change the properties of the surface ... -
Weakly nonlinear transient waves on a shear current: ring waves and skewed Langmuir rolls
(Journal article; Peer reviewed, 2019)We investigate the weakly nonlinear dynamics of transient gravity waves at infinite depth under the influence of a shear current varying linearly with depth. The shear field makes this problem three-dimensional and rotational ... -
Weight and power optimization of steam bottoming cycle for offshore oil and gas installations
(Journal article; Peer reviewed, 2014)Offshore oil and gas installations are mostly powered by simple cycle gas turbines. To increase the efficiency, a steam bottoming cycle could be added to the gas turbine. One of the keys to the implementation of combined ... -
Weight Estimation of Steam Cycle for CO2 Capture System on Offshore Oil and Gas Installation
(Master thesis, 2016)Climate change due to increasing anthropogenic CO2 emissions is a major concern both in Norway, and globally. Greater environmental focus and increased taxes on emitted CO2 have led to corporate efforts on reducing CO2 ... -
Wet Gas Compression - Diffuser Instabilities
(Master thesis, 2014)The Norwegian petroleum industry has played an important role in the country's industrial development since the first oil production started in 1971 at Ekofisk. At present, however, natural gas has become an important part ... -
Wet Gas Compression - IGV Control
(Master thesis, 2017)Wet gas compression and subsea technology has gained increased attention in the recent years. Subsea compression increase extraction from aging gas fields and make remote fields profitable. Wet gas compressors eliminate ... -
Wet Gas Compression - Transients
(Master thesis, 2017)Today, most of the large and easily accessible oil and gas fields on the Norwegian continental shelf has been developed. Future production potential is found in development of fields at large depths and cost-efficient ... -
Wet Gas Compression: Experimental investigation of the aerodynamics within a centrifugal compressor exposed to wet gas
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:106, Doctoral thesis, 2012) -
Wet Gas Compression: Impeller Rig
(Master thesis, 2009)Wet gas compression technology is of great value to the oil and gas industry for boosting of unprocessed well stream and to reduce investment costs related to equipment and personnel. The growing interest in wet gas ... -
Wet Gas Compressor Performance
(Master thesis, 2014)The world s energy demand is increasing and more attention is given to increase the recovery of gas fields. Installing a compressor near the wellhead can contribute to this. Constantly changing reservoir conditions requires ... -
Wet gas compressor performance evaluation
(Doctoral theses at NTNU;2022:46, Doctoral thesis, 2022)The demand for oil and gas from the maturing Norwegian continental shelf (NCS) remains high. Even though the concern for climate change is shifting energy production towards renewables, production on the NCS is expected ... -
Wet Gas Compressor Performance: A Numerical Investigation of Thermal-Equilibrium in a Centrifugal Compressor Exposed to Wet Gas
(Master thesis, 2012)Wet gas compression and subsea compression technology has gained increased focus in the recent years. With aging fields on the Norwegian continental shelf and new discoveries in arctic regions, subsea compression could ...