Relevant bibliographies by topics / Oil leakage

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Oil leakage'

Author: Grafiati
Published: 4 June 2021
Last updated: 5 February 2022

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Journal articles on the topic "Oil leakage"

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Bolonny, V. T. "ESTIMATION OF THE VALUE OF OIL LOSS DURING THE SEALING OF THE LINEAR PART OF THE PIPELINE." PRECARPATHIAN BULLETIN OF THE SHEVCHENKO SCIENTIFIC SOCIETY Number, no. 1(59) (January 28, 2021): 142–50. http://dx.doi.org/10.31471/2304-7399-2020-1(59)-142-150.

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The characteristics of the oil transportation system of Ukraine are presented, the emergency risks of domestic oil transportation pipeline sys­tems are established. The analysis of the accident rate of oil pipeline trans­port in Ukraine was carried out. The technique for estimating emergency oil leakages in the main pipeline depending on the energy characteristics of the fluid flow and changes in its level in the cross section is developed allowing to determine the volume of oil leakages into the environment from the de­tection of pressure drop to the establishment of stationary conditions of the pipeline operation and its final stop for the purpose of carrying out repairs.
 Based on the results of the calculations, the graphs which demonstrate the nature of the formation of soil pollution area by leakage from the pipeline are constructed.
 The linear part of the main oil pipelines is the most dangerous object, as all emergency situations are associated with emergency processes of dif­ferent intensity in the form of oil leakage into the environment and in fact are dangerous when system failures appear. The process and the time period for the formation of the ecological danger zone depend on the amount of oil leakage, its intensity.
 Emergency leakages of oil and petroleum products from pipelines enter the environment, which is often the soil, forming an area of gassiness, and then reach the surface, polluting the atmosphere.
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Li, Yuhan, Minxia Li, Yusheng Hu, Jia Xu, and Liping Ren. "Researches on leakage with lubricating oil using a composite multiphase lattice Boltzmann method." Thermal Science, no. 00 (2021): 135. http://dx.doi.org/10.2298/tsci200605135l.

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In this paper, a novel model to investigate leakage of gaseous working fluid in pressured devices with lubricating oil was created with Lattice Boltzmann method and Shan-Chen multiphase model. A method to adapt actual pressure-density relation into the lattice via a self-adapting timestep and simplify the simulation of compressible fluid was developed. A model to simulate two-phased leakage with lubricating oil was created with a combination of Shan-Chen model and passive scalar model. The model can realize the phase distribution simulation in the leakage field without causing the pressure and the inter-phase interactions to overlap. This model is also able to be combined with other multiphase models. After a group of preliminary tests of the model, the characteristics of phase distribution and leakage were investigated qualitatively. Five types of phase distribution in the simulation results were classified, which are: uniformed distribution, sphered drips, gas channel, blocked channel and slug bubbles. The results of simulations show good conformance with actual leakage patterns. Preliminary discussions about the leakage features are made upon the results. However, these simulation results are only qualitative and cannot show the quantitative features in leakages. More experimental investigations should be carried out to realize correlations to the model.
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Xin, D., J. Feng, X. Jia, and X. Peng. "An investigation into oil—gas two-phase leakage flow through micro gaps in oil-injected compressors." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 224, no. 4 (2010): 925–33. http://dx.doi.org/10.1243/09544062jmes1704.

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This article presents the investigation on the oil—gas two-phase leakage flow through the micro gaps in oil-injected compressors and provides a new way of investigating the internal leakage process in the compressors. The oil—gas leakage rates were measured through the micro gaps of various gap sizes, the volume ratios of oil to gas, and pressure differences/ratios; and the flow patterns reflecting the flow characteristics were observed by using a high-speed video. The experimental results showed that the leakage flowrate was significantly related to the flow patterns in the gap, which were similar to those found in the existing literature and agreed well with the predicted ones by the Weber number. The gas leakage flowrate through the gap increased rapidly with the increased pressure ratio until the pressure ratio reached the critical pressure ratio, which ranged from 1.8 to 2.7. At the critical pressure ratio, the flow pattern transition from churn flow to annular flow occurred, resulting in gas leakage driven by a different sealing mechanism. As the volume ratio of oil to gas increased by 0.5 per cent, the gas leakage flowrate decreased by 77 per cent.
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Wang, Zegen, Kexia Li, and Mingjun Xi. "Spatial Analysis of Leakage Accidents of Oil Pipeline River Crossing Sections." Open Civil Engineering Journal 10, no. 1 (2016): 836–46. http://dx.doi.org/10.2174/1874149501610010836.

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Oil pipeline leakages often bring catastrophic impacts on rivers along the pipeline, drinking water sources, and farm land irrigation etc. Based on the distinct spatial-temporal attributes in the analysis of oil spill, diffusion and consequences thereof, we present the theoretical concept and reasoning for leakage accidents spatial analysis through combining GIS and accident aftermath model. Specifically, we aim to achieve quantitative analysis and visualization of oil spill accidents through several GIS functions, which include buffer analysis, overlay analysis, spatial statistical analysis and visualized analysis. Taking a specific leakage accident of oil pipeline river-crossing section as an example, we have analyzed the polluted areas under different diffusion time and the hydrological conditions. In addition, we have evaluated populations and farm land areas affected in terms of drinking water and irrigation as well as their spatial distributions. The results demonstrate that our method can achieve quantitative analysis and visualized representations of oil spills to support policy-makers in making contingency plans.
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Kranenburg, C., and E. Vegt. "Leakage from Ruptured Submarine Oil Pipeline." Journal of Transportation Engineering 111, no. 5 (1985): 570–81. http://dx.doi.org/10.1061/(asce)0733-947x(1985)111:5(570).

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Lemaitre, Stephanie, Kaveh Vahdani, Pierre Escalas, and Geoffrey E. Rose. "Orbital Leakage of Intraocular Silicone Oil." Ophthalmic Plastic and Reconstructive Surgery 36, no. 3 (2020): e75-e78. http://dx.doi.org/10.1097/iop.0000000000001588.

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Rong, Li, Chen Lunjun, Su Ming, Zeng Qi, and Liu Yong. "Study on Friction and Wear Characteristics of Aluminum Alloy Hydraulic Valve Body and Its Antiwear Mechanism." Archives of Foundry Engineering 17, no. 1 (2017): 207–15. http://dx.doi.org/10.1515/afe-2017-0037.

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Abstract In order for the working status of the aluminum alloyed hydraulic valve body to be controlled in actual conditions, a new friction and wear design device was designed for the cast iron and aluminum alloyed valve bodies comparison under the same conditions. The results displayed that: (1) The oil leakage of the aluminum alloyed hydraulic valve body was higher than the corresponding oil leakage of the iron body during the initial running stage. Besides during a later running stage, the oil leakage of the aluminum alloyed body was lower than corresponding oil leakage of the iron body; (2) The actual oil leakage of different materials consisted of two parts: the foundation leakage that was the leakage of the valve without wear and wear leakage that was caused by the worn valve body; (3) The aluminum alloyed valve could rely on the dust filling furrow and melting mechanism that led the body surface to retain dynamic balance, resulting in the valve leakage preservation at a low level. The aluminum alloy modified valve body can meet the requirements of hydraulic leakage under pressure, possibly constituting this alloy suitable for hydraulic valve body manufacturing.
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Inaguma, Yoshiharu. "A practical approach for analysis of leakage flow characteristics in hydraulic pumps." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 227, no. 5 (2012): 980–91. http://dx.doi.org/10.1177/0954406212456933.

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This article presents a practical approach to leakage flow analysing for various types of hydraulic pumps. In this study, the influence of pump-operating conditions such as operating pressures, pump speeds and oil temperature on the leakage flow characteristics is investigated and a mathematical model to calculate the leakage flow is proposed. Currently, an external gear, an internal gear or a vane pump is commonly used for an automatic transmission. These pumps have their own leakage flow characteristics, which depend not only on pump-operating conditions but also on structures and dimensions of the pumps. For various pumps having different constructions, the delivery pressure and the oil temperature differently affect the leakage flow characteristics and especially the delivery pressure also changes the clearances causing the leakage flow. A mathematical model for the leakage flow, which takes into account a change in the thickness of clearance according to the delivery pressure, represents accurately the actual leakage flow characteristics in various pumps. Also, it clarifies the influence of the pump-operating conditions on their leakage flow characteristics. In the external and internal gear pumps, the leakage flow would not approach zero due to an existence of the orifice flow leakage almost independent of the viscosity of oil, even at an extremely low oil temperature. This leakage flow influences significantly the volumetric efficiency at a low oil temperature in the gear pumps.
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Kim, Choi, Park, He, and Oh. "Oil Leakage Evaluation for Selection of Emulsion-Based Non-Curable Synthetic Polymer Rubberized Gel (ENC-SPRG) as Waterproofing Material in Underground Structures." Materials 12, no. 23 (2019): 3816. http://dx.doi.org/10.3390/ma12233816.

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A revised oil leakage evaluation regime is proposed in response to the oil leakage problems of emulsion-based non-curable synthetic polymer rubberized gel (ENC-SPRG) used as a waterproofing material in concrete slabs of residential underground structures. Oil leakage from ENC-SPRG can cause significant economic and environmental damage. As ENC-SPRG waterproofing material is relatively new in the global waterproofing market, a systematic quality control for ENC-SPRG products being manufactured and exported globally is currently non-existent. For the selection of optimal ENC-SPRG, six assessment parameters comprised of averaged and daily average oil leakage mass, averaged and daily average filler content settlement, oil leakage area, and oil leakage duration are proposed. Five ENC-SPRG product specimens are tested to obtain the property values of each parameter. The property values derived from the test results are compared between the tested ENC-SPRG product specimens. With the demonstration of this evaluation regime, a quantified method for a comparative assessment of ENC-SPRG type waterproofing materials is established.
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Qi, Han Bing, Yang Liu, Guo Zhong Wu, Dong Li, and Jie Liu. "Numerical Simulation of Multiphase Flow Pollutants during Migration Process in Buried Oil Pipeline Leakage." Applied Mechanics and Materials 675-677 (October 2014): 359–62. http://dx.doi.org/10.4028/www.scientific.net/amm.675-677.359.

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Considered influence of buried pipeline leakage of crude oil pollutants multiphase flow migration phenomenon effects, numerical model was established to buried pipeline road multiphase leak process simplified for two-dimension problem, numerical simulation was used with the CFD software FLUENT on buried pipeline leakage of crude oil pollutants migration process caused pollution problem, calculation simulation was carried out in the two species workers condition of one phase flow and multiphase flow buried pipeline leakage of pollutants around earth temperature field, the speed field and the distributions of oil/water phase in the soil porous media. Analysis the comparison of results indicated that: 1) the affected region of temperatures spread above the buried oil pipeline was more slowly than either side of the rate of diffusion;2) During the buried pipeline leakage early, except the maximum of velocity near the leakage mouth, the other penetration regional velocity of leakage crude oil are very low.
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Dissertations / Theses on the topic "Oil leakage"

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Yildiz, Meltem. "Modeling And Simulation Of Oil Leakage In Radial Lip Seals." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12611842/index.pdf.

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Radial lip seals are used to prevent leakage between machine elements in many industrial applications. During operation, fluid film between seal lip and shaft surface generates a pressure distribution on the lip which is elastically deformed due to hydrodynamic pressure. Surface roughness parameters in terms of moments of height profile distribution (rms roughness, skewness and kurtosis) affect the rate of oil leakage. A computer program is developed for elastohydrodynamic analysis of radial lip seals. Both the fluid mechanics of the lubricating film and the elastic deformation of the lip are taken into consideration to determine the hydrodynamic pressure distribution and the oil flow through the seal lip. The effect of shaft surface roughness on hydrodynamic analysis is taken into account by using average Reynolds equation with flow factors. For non-Gaussian surfaces, the modified flow factors are used to investigate the effects of skewness and kurtosis on the oil leakage. Numerical tests are performed for different skewness, kurtosis and initial seal tightness values. Results show that when a seal is mounted with a high initial tightness, the hydrodynamic pressure developed is not enough to deform the lip to form a fluid film between the shaft and the seal lip. It is observed that for the same rms roughness and skewness, the side flow rate increases as the kurtosis value increases. However, for the same rms roughness and kurtosis values, the side flow rate decreases for all skewness values.
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Lundberg, Johan. "Undocumented oil leakages : A study about stern tube seals and leakages." Thesis, Linnéuniversitetet, Sjöfartshögskolan (SJÖ), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-103570.

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The majority of the vessels in the commercial fleet utilize oil lubricated stern tubes. Unfortunately, this brings about a risk of oil leaking from the stern tube into the marine environment if the stern tube seal would become worn or damaged by foreign materials. Previous studies concluded that, on average, 2.6 litres of oil per day leak out from the stern tube of ships. This essay has investigated the causes that could increase the leakage rate from the stern tube by reviewing literature, interviewing experts, and sending out surveys with questions regarding the subject. The answers that were received painted a clear picture that it is impossible to get a perfect seal on a stern tube. The causes that could influence the leakage rate were design related, such as vibrations, the rotational speed of the propeller shaft, radial and axial movements of the propeller shaft, as well as external causes such as the quality of water and foreign materials, for example, fishing lines and nets. The question whether water lubricated stern tubes were a viable alternative compared to oil lubricated stern tubes was also investigated. The result was that the bearing on a water lubricated stern tube did not have as long lifespan as an oil lubricated bearing.<br>Majoriteten av fartygen i handelsflottan använder oljesmorda propellerhylsor för att smörja propelleraxeln. Tyvärr medför det en risk att olja kan läcka ut från hylsan om tätningarna skulle bli utslitna eller skadas av främmande föremål. Tidigare forskning har visat att cirka 2,6 liter olja per dag läcker ut genomsnittligen från fartyg i handelsflottan. Denna uppsats har utrett vad som kan påverka läckagemängden från en propellerhylsa genom att utnyttja intervjuer och enkätsvar. Svaren som framkom var att det är mer eller mindre omöjligt att få en perfekt tätning på en propellerhylsa. Saker som kan påverka läckagemängden var designfenomen som vibrationer, axiella- och radiella rörelser och varvtal på propelleraxeln, samt yttre påverkan som vattenkvalité och främmande föremål som fiskelinor och nät. I uppsatsen jämförs även vattensmorda propellerhylsor med fokus på livstid, kostnad och underhåll, med en oljesmord propellerhylsa. En slutsats är att det vattensmorda lagret inte har samma livstid som det oljesmorda.
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Culotta, Vittorio G. "Theory versus experiment of the rotordynamic and leakage characteristics of smooth annular bushing oil seals." Texas A&M University, 2004. http://hdl.handle.net/1969.1/1512.

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This thesis provides a comparison of experimental rotordynamic coefficients for laminar, smooth bushing oil seals to theoretical predictions from XLLubeGT and XLAnSeal. The experimental results come from a new test rig developed at the Turbomachinery Laboratory at Texas A&M University. The two software programs were developed to predict the static and dynamic characteristics of seals. XLLubeGT is a Reynolds equation based program while XLAnSeal is based on a bulk-flow Navier- Stokes model that includes temporal and convective acceleration terms. XLAnSeal was used to predict the added-mass terms of the seals since XLLubeGT assumes those terms to be zero or negligible. The data used for input into the two seals code was the actual measured conditions from the test rig. As part of the input parameters, inlet inertia effects and thermal gradients along the seal were included. Both XLLubeGT and XLAnSeal have the capability to analyze straight bore seals with different inlet and outlet clearances – essentially a tapered seal – but seal expansion caused by the radial differential pressure across the seal bushing was not included. Theoretical and experimentally determined dynamic characteristics include stiffness, damping, inertia terms and Whirl Frequency Ratio (WFR). Seal static characteristics are also reported. They include: leakage, shaft center line loci and Reynolds numbers. Test conditions include three shaft speeds: 4000, 7000 and 10,000 rpm, three test pressures: 21, 45 and 69 bar [300, 650, and 1000 psi] and multiple eccentricities from 0.0 to 0.7. The results for the dynamic characteristics show good correlation of the experimental data to the theoretical values up to an eccentricity of about 0.5. At higher eccentricities, the theory generally under-predicts the dynamic characteristics. Inertia terms are greatly under-predicted. The results for the static characteristics also show good correlation to the experimental data, but they also have a tendency to be under-predicted at higher eccentricities.
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McCallum, Katie Arlene. "Probabilistic Analysis of Pipeline Reliability Using a Markov Process." University of Akron / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=akron1334932206.

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Lundby, Eleonor, and Marcus Viktorstam. "Leakage in an oil pump system – Analysis and suggested improvements : A case study at Husqvarna AB." Thesis, Tekniska Högskolan, Högskolan i Jönköping, JTH, Maskinteknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-40785.

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Unintended oil leakage is a problem that occurs in a wide range of products in the forest and gardening sector. Presented as a basis for this thesis is an oil pump system designed to provide lubrication for the chain on a pole saw. In this system, unintended leakage occurs and creates a problem. The purpose and aim of the thesis are to investigate and determine the cause of the leakage and suggest how the problem can be solved.  Since the company which sells these pole saws profiles as environmentally conscious it is important to solve the issue. To fulfill the purpose and aim of the thesis, several tests are set up to investigate the cause of the leakage. When an understanding is reached, the set-based concurrent engineering method is used to generate solutions and increase knowledge of the problem. These concepts were tested, and the outcome and effectiveness documented.  The results are presented and discussed from the process of the thesis. The primary cause of the leakage is credited to an over-pressure building within the oil tank, forcing the oil through the obstructions and out the outlet. Included in the results and discussions are suggested solutions to the problem. Two concepts are included as solutions, as well as suggestions for future work and research of the problem.
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Chan, Gabriel Angelo Sherak. "Trade and the environment : the political economy of CO₂ emission leakage with analysis of the steel and oil sands industries." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/115466.

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Thesis: S.B., Massachusetts Institute of Technology, Department of Earth, Atmospheric, and Planetary Sciences, 2009.<br>Thesis: S.B., Massachusetts Institute of Technology, Department of Political Science, 2009.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 113-116).<br>Introduction: In 2007, scientists and governmental officials from around the world contributed to the United Nations-authorized Intergovernmental Panel on Climate Change's (IPCC) Fourth Assessment Report. Through peer-reviewed scientific research and governmental review, the IPCC came to the conclusion that "warming of the climate system is unequivocal," and that "most of the observed increase in global average temperatures since the mid-20th century is very likely due to the observed increase in anthropogenic greenhouse gas concentrations." The IPCC Fourth Assessment states that humans have "more likely than not" contributed to the phenomena of more frequent "warm spells/heat waves," larger "area[s] affected by droughts," more "intense tropical cyclones.. .and heavy precipitation events," and "extreme high sea level[s]." Citing "high agreement" and "much evidence," the IPCC states that "with current climate change mitigation policies and related sustainable development practices, global GHG [greenhouse gas] emissions will continue to grow over the next few decades." (Intergovernmental Panel on Climate Change, 2007)<br>by Gabriel A. Chan.<br>S.B.
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Majdic, Franc. "Comparison of spool radial grooves influence between water and oil hydraulics." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-199629.

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In this paper numerical flow calculations with respect to the annular gaps with added radial grooves normaly used on the spools of directional control valves were carried out. The impact of various annular gap geometries and radial grooves during variable pressure conditions, and while using different hydraulic fluids, on the flows through annular gaps were investigated for different flow regimes. Samples with different geometries and numbers of radial groves on the spool of the directional control valve were also made for the purpose of carrying out flow measurements. The two different hydraulic fluids that were used in the numerical simulations and for the flow measurements were a hydraulic mineral oil and tap water. The results of the numerical calculations for the different models of the radial grooves with axially symmetric geometries show their impact on the internal leakage with respect to three different regimes of flow. The results of the numerical calculations based on the use of a hydraulic oil show a trend that was established by the experimental investigation.
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Folmerz, Mattias. "Oljeläckage torkparti PM12 : Utvärdering av oljeläckage i torkparti PM12." Thesis, Högskolan Dalarna, Maskinteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:du-27364.

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Stora Enso Kvarnsveden är ett pappersbruk lokaliserat vid Dalälven i Kvarnsveden. Bruket har för tillfället två producerande maskiner och detta arbete behandlar en av dem, vilken är PM12. På PM12 har man problem med oljeläckage i maskinens torkparti. Läckagen uppstår genom de lagerhus som finns för att bära upp torkpartiets valsar. I detta arbete har man undersökt vad läckagen beror på med fokus på dess lagertätningar. Syftet och målet med detta arbete har varit att utreda varför läckagen uppstår samt att generera koncept för att minska eller helt eliminera läckagen. Arbetet har innefattat diverse mätningar och utredningar för att komma till rätta med problemet. En litteraturstudie har genomförts för att identifiera felorsaker samt lösningar. Koncept har genererats utifrån studien samt de mätningar som utförts. Man har inte under arbetets gång helt kommit fram till vad läckagen beror på men man har kommit en bra bit på vägen. Förslag till fortsatt arbete har getts där det rekommenderas mer specifikt vilka typer av mätningar som bör genomföras samt de koncept man som bör bygga vidare på.<br>Stora Enso Kvarnsveden is a paper mill located at Dalälven in Kvarnsveden. The utility currently has two producing machines, and this study deals with one of them, which is PM12. At PM12 there is a problem with oil leaks in the machine's drying section. Leakage occurs through the bearing houses who are there to support the dryer's rollers. In this study, it has been investigated what the leakage is due to focusing on its bearing seals. The purpose of this study has been to investigate why leakage occurs and to generate concepts to reduce or eliminate leaks. The study has included various measurements and investigations to address the problem. A literature study has been conducted to identify causes and solutions. Concepts have been generated from the literature study as well as the measurements that have been taken. After this study it´s not fully realized why the leakage occurs, but it had come a long bit on the way. Proposals for continued work have been given, where it is recommended more specifically what kind of measurements that should be done and the concepts that should be further developed.
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Lima, Tarcisio Misael de. "Análise de metodologias para localização de defeitos em cabos isolados de alta tensão do tipo oil filled (OF)." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/3/3143/tde-10072014-170858/.

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Duas metodologias que podem ser utilizadas na localização de defeitos em cabos isolados de alta tensão do tipo Oil Filled (OF) foram analisadas. As metodologias descritas têm como princípio a localização de vazamentos de óleo, ou seja, todo defeito seguido de vazamento de óleo poderá ser localizado a partir das mesmas. A primeira metodologia é baseada no congelamento dos cabos OF, com a linha desenergizada, a fim de localizar vazamentos de óleo de cabos OF a partir de 300 litros por mês. A segunda metodologia é baseada na utilização de traços de gás perfluorcarbono Perfluorocarbon Tracer (PFT), através de um sistema montado com equipamentos que permitem realizar a localização de vazamentos de óleo de cabos OF a partir de 100 litros por mês, sem a necessidade de desligamento da linha subterrânea. Esta dissertação propõe algumas melhorias na metodologia do congelamento e apresenta as primeiras experiências de utilização do PFT no Brasil para localização de vazamentos de óleo.<br>Two methods that can be used to locate faults in Oil Filled (OF) cables were analyzed. The methods described have the principle of oil leak location. All defects followed by oil leakage can be located using the same. The first method is based in OF cables freezing, with the line outage, in order to locate oil leaks from 300 liters per month and above. The second method is based on the use of tracer gas - Perfluorocarbon Tracer (PFT) and devices that allow to perform the location of oil leaks from 100 liters per month, without the need of underground line outage. This paper proposes some improvements for the freezing method and presents the first experiments in Brazil using PFT to locate oil leakage.
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Tian, Qing. "Some Features of Tip Gap Flow Fields of a Linear Compressor Cascade." Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/9673.

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This thesis presents some results from an experimental study of three-dimensional turbulent tip gap flows in the linear cascade wind tunnel, for two different tip gap clearances (t/c=1.65% and 3.3%). The experiments focus on near-wall flow field measurements for the stationary wall and moving wall, and static pressure measurement on the low end-wall for the stationary wall case. The representative flows were pressure driven, three-dimensional turbulent boundary layers in the linear cascade tunnel for the stationary wall case, and the combination of the pressure driven and shear driven flow for the moving wall case. Several experimental techniques are used in the studies: a three-orthogonal-velocity-component fiber-optic laser Doppler anemometer (3D-LDA) system, surface oil flow visualization, and a scanivalve system for static pressure measurement through pressure ports on the end-wall. From the details of the oil flow visualization pattern on the end-wall, some features of the passage flow, cross flow, and the tip leakage vortex in this cascade flow were captured. Oil flow visualization on the blade surface reveals the reattachment of the tip leakage vortex on the blade surface. The static pressure results on the lower end-wall and mid-span of the blade show huge pressure drop on the lower end-wall from the pressure side to the suction side of the blade and from mid-span to the lower end wall. The end-wall skin friction velocity is calculated from near-wall LDA data and pressure gradient data using the near-wall momentum equation. The statistics of Reynolds stresses and triple products in two-dimensional turbulent boundary layer and three-dimensional turbulent boundary layer was examined using a velocity fluctuation octant analysis in three different coordinates (the wall collateral coordinates, the mid tip gap coordinates, and the local mean flow angle coordinates). The velocity fluctuation octant analysis for the two-dimensional turbulent boundary layer reveals that ejections of the low speed streaks outward from the wall and the sweeps of high speed streaks inward toward the wall are the dominant coherent motions. The octant analysis for the three-dimensional turbulent boundary layer in the tip gap shows that the dominant octant events are partially different from those in the two-dimensional turbulent boundary layer, but ejection and sweep motions are still the dominant coherent motions. For the three-dimensional turbulent boundary layer in the moving wall flow, the near-wall shear flow reinforces the sweep motion to the moving wall and weakens the out-ward ejection motion in the shear flow dominant region. Between the passage flow and the shear flow, is the interaction region of the high speed streaks and the low speed streaks. This is the first time that the coherent structure of the three-dimensional turbulent boundary in the linear cascade tip gap has been studied.<br>Master of Science
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Books on the topic "Oil leakage"

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Troubleshooting hydraulic components: Using leakage path analysis methods : a practical guide. R.S. McLaren, 1993.

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Bond, R. P. M. Major spills and incidents: A report for CEST's Industry and the Environment Project. Centre for Exploitation of Science and Technology, 1991.

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Ghosh, Diptesh. On the blowout preventer testing problem: An approach to cheking for leakage in BOP networks. Indian Institute of Management, 2012.

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Board, Canada National Energy. Focus on safety and environment: A comparative analysis of pipeline performance, 2000-2003. National Energy Board, 2005.

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Focus on Safety: A Comparative Analysis of Pipeline Safety Performance. National Energy Board, 2003.

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Book chapters on the topic "Oil leakage"

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Zhang, Honglue, Qi Li, Xiaoping Zhang, and Wei Ba. "Industrial Oil Pipeline Leakage Detection Based on Extreme Learning Machine Method." In Advances in Neural Networks - ISNN 2017. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-59081-3_45.

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Pistiner, A., and M. Shapiro. "Groundwater Contamination Originating from Continuous Oil Leakage from an Underground Source." In Soil and Aquifer Pollution. Springer Berlin Heidelberg, 1998. http://dx.doi.org/10.1007/978-3-662-03674-7_23.

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Zhang, Yuhong, Gui Gao, Hang Liu, Qianhe Meng, and Yuli Li. "Deformation Analysis of Crude Oil Pipeline Caused by Pipe Corrosion and Leakage." In Advances in Intelligent Information Hiding and Multimedia Signal Processing. Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-9710-3_30.

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Yao, Bin. "CFD Correlation Between Clearance Leakage and Key Parameters of Oil Well Pump." In Advances in Decision Science and Management. Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-2502-2_66.

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Lou, Zhigang, Hongzhao Liu, and Mingdu Hu. "A General Survey on Technological Developments of Oil Leakage Detection over the Past Decade." In Communications in Computer and Information Science. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-23214-5_79.

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Patel, Brijeshkumar, Ahmed Kovacevic, and Aleksander Krupa. "On Measuring Velocity and Temperature in Leakage Flows of Oil Free Rotary Positive Displacement Machines." In New Technologies, Development and Application IV. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-75275-0_84.

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Qi, Jiang. "Experimental Study of Interference Factors and Finite Element Simulation on Oil-Gas Pipeline Magnetic Flux Leakage Density." In Advanced Materials Research. Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-463-4.1255.

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Yang, Liang, Xiaoting Guo, Chunfeng Xu, et al. "Design and Validation of Three-Axis High Definition Magnetic Flux Leakage Detection Robot for Oil/Gas Pipelines." In Advances in Intelligent Systems and Computing. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-0238-5_27.

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Prakash, Surya, Bhuvanesh Kumar Sharma, Chandra Prakash, Shubham Saini, Vikas, and Ankur Sharma. "Investigation of the Criticality of Flux Leakage of a Magnetizer Assembly of a MFL Tool for Oil and Gas Pipelines Inspection." In Lecture Notes in Mechanical Engineering. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-5519-0_24.

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Teme, So-ngo Clifford, Oruene Olem-Ogoin, and Prosper Ogbunie. "An Assessment of Crude Oil Leakage Beneath a Tank in a Refinery in the Niger Delta Sub-region Nigeria, Through Geotechnical Techniques." In Contemporary Issues in Geoenvironmental Engineering. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-61612-4_17.

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Conference papers on the topic "Oil leakage"

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Camerini, Daniel Almeida, Jean Pierre von der Weid, Cla´udio Soligo Camerini, and Carlos Eduardo Maia. "Leak Detector Pig for Oil Pipelines." In 2004 International Pipeline Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/ipc2004-0095.

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The leakage detector pig was created with the purpose of detect and locate leakages in a preventive way. The fast detection of small leakages decreases the probability of larger leakages. By means of a differential pressure system based on pressure data acquired through the pig’s running, using pressure sensors installed on the pig’s vessel, small leakages are identified and its positions registered. This allows a quick intervention at the identified location. The working principle is based on the pressure difference caused by the leakage, which is read by the sensors. The polyurethane cups responsible by the pig’s propulsion are of a special kind capable of sealing a constant volume of product among them. So, when the pig passes through a leakage, the pressure in the middle drops compared to those in front and hear, generating a characteristic signal thus permiting identification. The first prototype was tested intensively at laboratory facilities, and in a test pipeline showing excellent results locating precisely all the simulated leakages. Defects from different sizes with different flow where simulated and measured. This work has the objective to present the tool, its potential, the test results, to discuss its efficiency in detect and locate leakages and the possibilities for the future.
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Eke, Paul Emeka, Mark Naylor, Andrew Curtis, and Stuart Haszeldine. "CO2 Leakage Prevention Technologies." In SPE Offshore Europe Oil and Gas Conference and Exhibition. Society of Petroleum Engineers, 2011. http://dx.doi.org/10.2118/145263-ms.

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Ma, Guoguang, Jingling Wang, Zhijian Chen, and Min Zuo. "Oil Pipeline Flange Leakage Analysis and Countermeasures." In International Conference on Pipelines and Trenchless Technology. American Society of Civil Engineers, 2012. http://dx.doi.org/10.1061/9780784412619.063.

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Cheng, Liang-Yee, Diogo Vieira Gomes, and Kazuo Nishimoto. "A Numerical Study on Oil Leakage and Damaged Stability of Oil Carrier." In ASME 2010 29th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2010. http://dx.doi.org/10.1115/omae2010-20827.

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The objective of the present paper is to carry out a study on coupled transient process of the oil leakage and the damaged stability of a crude oil carrier. For this purpose, numerical simulations based on MPS (Moving particle Semi-Implicit) method are carried out considering a two dimensional small scaled model and the oil-water multiphase flow with free surface. The results are compared with that obtained by the stability analysis software SSTAB, which provides the final list angle in case of the damage, and show good agreement.
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Shan, Song, Li Wang, and Jinfeng Zhou. "Distributed optical fiber sensors for oil pipeline leakage." In SPIE Proceedings, edited by Ivan A. Shcherbakov, Kexin Xu, Qingyue Wang, Alexander V. Priezzhev, and Vladimir I. Pustovoy. SPIE, 2006. http://dx.doi.org/10.1117/12.694442.

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Wu, Wen-Feng, and Jin-Shu Lu. "Experimental Study on the Leakage of Oil Tanker." In 2015 International Conference on Energy, Environmental & Sustainable Ecosystem Development (EESED 2015). WORLD SCIENTIFIC, 2015. http://dx.doi.org/10.1142/9789814723008_0089.

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Abrahamsen, Jens, Gunnar Hannibal Lie, Trond Benny Bertmand, and Svein Arild Haugen. "Ormen Lange Subsea Condition and Leakage Monitoring." In SPE Offshore Europe Oil and Gas Conference and Exhibition. Society of Petroleum Engineers, 2007. http://dx.doi.org/10.2118/108970-ms.

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Alexeev, B. N., R. Ts Guliants, N. S. Karishnev, and N. A. Kholodeva. "Towed Detectors Of The Leakage Of Hydrocarbons Used In Underwater Piping." In Arctic Shelf Oil & Gas Conference 2004. European Association of Geoscientists & Engineers, 2004. http://dx.doi.org/10.3997/2214-4609-pdb.185.section6_10.

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Eriksen, P. K. "Leakage and oil spill detection utilizing active acoustic systems." In 2013 IEEE International Underwater Technology Symposium (UT 2013). IEEE, 2013. http://dx.doi.org/10.1109/ut.2013.6519891.

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Liu, Wencai, Qihua Wang, and Yongtao Zhao. "Application of Magnetic Flux Leakage in Oil Tank Bottom." In 2017 Far East NDT New Technology & Application Forum (FENDT). IEEE, 2017. http://dx.doi.org/10.1109/fendt.2017.8584561.

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Reports on the topic "Oil leakage"

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Holland, W. E. Measurement uncertainty of silicone oil leakage testing. Office of Scientific and Technical Information (OSTI), 1991. http://dx.doi.org/10.2172/5988474.

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Clark, Peter Edward, Jamey Jacob, M. Tyler Ley, Nicholas F. Materer, and Jack Pashin. Surface and Airborne Monitoring Technology for Detecting Geologic Leakage in a CO2-Enhanced Oil Recovery Pilot, Anadarko Basin, Texas. Office of Scientific and Technical Information (OSTI), 2018. http://dx.doi.org/10.2172/1457219.

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Gulliver, Djuna M., Kelvin B. Gregory, and Gregory V. Lowry. Impact of CO2 on the Evolution of Microbial Communities Exposed to Carbon Storage Conditions, Enhanced Oil Recovery, and CO2 Leakage. Office of Scientific and Technical Information (OSTI), 2016. http://dx.doi.org/10.2172/1330219.

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Gulliver, Djuna, Kelvin B. Gregory, and Gregorgy V. Lowry. Impact of CO2 on the Evolution of Microbial Communities Exposed to Carbon Storage Conditions, Enhanced Oil Recovery, and CO2 Leakage. Office of Scientific and Technical Information (OSTI), 2016. http://dx.doi.org/10.2172/1344489.

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