Relevant bibliographies by topics / Streamlined body

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

Academic literature on the topic 'Streamlined body'

Author: Grafiati
Published: 5 September 2021
Last updated: 1 February 2022

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Journal articles on the topic "Streamlined body"

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Lesger, Yona. "Stars, Stripes, and the Streamlined Body." Dress 44, no. 2 (July 3, 2018): 105–18. http://dx.doi.org/10.1080/03612112.2018.1496975.

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Yavorskii, N. I. "The thermal wake of a streamlined body." Journal of Applied Mathematics and Mechanics 55, no. 6 (January 1991): 819–27. http://dx.doi.org/10.1016/0021-8928(91)90134-g.

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Tang, Wen Hua, Ren Zhang Qian, Huai Yu Zou, and Bo Ming Pi. "The Optimal Selection Investigation on Flame Holder for Afterburner." Advanced Materials Research 354-355 (October 2011): 201–4. http://dx.doi.org/10.4028/www.scientific.net/amr.354-355.201.

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In order to determine the bluff body and slitted bluff body flame stability and combustion performance, atmospheric low-speed experimental platform was used to carry out diesel fog combustion experiment for two types of bluff body, which are respectively streamlined V-form added straight channel and triangle V-form added straight channel. Results have shown that flame stability and combustion efficiency of streamlined bluff body is orderly slit width at 13mm, 6mm, 0mm and the triangular bluff body is orderly slit width at 6mm, 13mm, 0mm. Optimal combustion performance is streamlined bluff body with slit width 13mm.
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Cortesi, Matteo, Giorgio Gatta, Giovanni Michielon, Rocco Di Michele, Sandro Bartolomei, and Raffaele Scurati. "Passive Drag in Young Swimmers: Effects of Body Composition, Morphology and Gliding Position." International Journal of Environmental Research and Public Health 17, no. 6 (March 18, 2020): 2002. http://dx.doi.org/10.3390/ijerph17062002.

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The passive drag (Dp) during swimming is affected by the swimmer’s morphology, body density and body position. We evaluated the relative contribution of morphology, body composition, and body position adjustments in the prediction of a swimmer’s Dp. This observational study examined a sample of 60 competitive swimmers (31 male and 29 female) with a mean (±SD) age of 15.4 ± 3.1 years. The swimmer’s Dp was measured using an electro-mechanical towing device and the body composition was assessed using a bioelectrical impedance analyser. Body lengths and circumferences were measured in both the standing position and the simulated streamlined position. Partial correlation analysis with age as a control variable showed that Dp was largely correlated (p < 0.05) with body mass, biacromial- and bi-iliac-breadth, streamline chest circumference and breadth. Body mass, Body Mass Index, chest circumference and streamline chest circumference showed a significant and moderate to strong effect (η2 > 0.55) on Dp. Body mass was the best predictor of Dp explaining 69% of the variability. These results indicate that swimmers with lower Dp values were: (i) slimmer, with lower fat and fat-free mass, (ii) thinner, with lower shoulder breadth, chest circumference, and streamline trunk diameters (iii), shorter, with lower streamline height. These findings can be used for talent identification in swimming, with particular reference to the gliding performance.
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Voropaiev, G. O., V. I. Korobov, and N. F. Dimitrieva. "MODELING OF A VENTILATED CAVITY BEHIND A STREAMLINED BODY." Journal of Numerical and Applied Mathematics, no. 1 (135) (2021): 73–79. http://dx.doi.org/10.17721/2706-9699.2021.1.09.

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The results of physical and numerical modeling of a ventilated air cavity behind a streamlined body are presented. The results of laboratory experiments to determine the amount of gas flowing from the ventilated cavity are presented. It is formed behind the cavitator depending on a number of geometric and dynamic parameters. Numerical simulation of non-stationary 3D two-phase flow was performed on the basis of open source software OpenFOAM. The influence of gas blowing parameters on the formation of an air cavity, size, shape and stability has been investigated. Good qualitative agreement with experimental data was obtained. It is shown that the thickness of the ventilated cavity is determined by the diameter of the cavitator regardless of the diameter of the blow hole, and the increase in velocity or gas flow rate has a positive effect on the length and stability of the formed cavity.
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Paukštaitis, Linas, Sigitas Kilikevičius, Ramūnas Česnavičius, Kristina Liutkauskienė, and Tadas Ždankus. "The Influence of Boiling on the Streamlined Body Drag Force and Falling Velocity." Applied Sciences 11, no. 4 (February 9, 2021): 1562. http://dx.doi.org/10.3390/app11041562.

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This article presents the results of numerical investigation of the influence of the streamlined body temperature on drag force and on the falling velocity in a water channel. The experimental data reflecting the cooling dynamics and body temperature influence on the falling velocity are presented as well. k − ε turbulence model and homogenous heat transfer model were chosen for the numerical 3D simulation. Drag force changes induced by the alteration of the body temperature were investigated. Velocity of the streamlined body under different temperatures of water was investigated experimentally, and the results were compared to the data obtained during the numerical simulation. The increase of the falling velocity and decrease of drag force were found to have been affected by the increase of the body temperature, which had influence on the change of the water parameters (density, phase, etc.) near the surface of the body. Simulation showed that the drag force and a velocity also depended on the water temperature. The drag force of the streamlined body decreased by 32% in comparison to the cold body for the body temperature equal to 150 °C and water temperature close to the saturation temperature (98 °C). Experimentally, it was determined that the velocity of the streamlined body covered by vapor film depended on the falling time and increased by 10–30%. Velocity difference was very small for the cold and hot bodies at the initial moment of the drop; however, it reached 20% and more after 0.3 s of the falling process.
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Sahu, Rajesh, and B. S. V. Patnaik. "CFD simulation of momentum injection control past a streamlined body." International Journal of Numerical Methods for Heat & Fluid Flow 21, no. 8 (November 2011): 980–1001. http://dx.doi.org/10.1108/09615531111177750.

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Grace, Sheryl Patrick, Hafiz M. Atassi, and William K. Blake. "Inverse aeroacoustic problem for a streamlined body. I - Basic formulation." AIAA Journal 34, no. 11 (November 1996): 2233–40. http://dx.doi.org/10.2514/3.13385.

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Dobrov, Yu V., M. E. Renev, V. A. Lashkov, I. Ch Mashek, and R. S. Khoronzhuk. "Heat flux on streamlined body surface after local energy input." Journal of Physics: Conference Series 1959, no. 1 (July 1, 2021): 012016. http://dx.doi.org/10.1088/1742-6596/1959/1/012016.

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Djuzhev, Nikolay A., Dmitry Novikov, and Vladimir Ryabov. "Application of the Streamlined Body for Properties Amplification of Thermoresistive MEMS Gas Flow Sensor." Solid State Phenomena 245 (October 2015): 247–52. http://dx.doi.org/10.4028/www.scientific.net/ssp.245.247.

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The main problems of the gas flow meters are the improvement of the sensitivity and velocity range. In this paper thermoresistive membrane gas flow sensor is considered. The sensor is based on the calorimetric principle of operation and developed for the thermal gas flow meters. Special streamlined body was used to improve sensor’s characteristics. It is shown that streamlined body raises sensitivity by 2 times and improves velocity range of the sensor.
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Dissertations / Theses on the topic "Streamlined body"

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Johansson, Mattias. "Evaluation of RANS turbulence models for the hydrodynamic analysis of an axisymmetric streamlined body with special consideration of the velocity distribution in the stern region." Thesis, KTH, Marina system, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-104653.

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This is a master’s thesis provided by the Swedish Defence Research Agency FOI and is written for the Center for Naval Architecture at the Royal Institute of Technology KTH. The objective is to perform a systematic simulation campaign of the flow around an axisymmetric streamlined body in order to evaluate several RANS-based turbulence models implemented in the open source CFD software package OpenFOAM. Of most interest is the low velocity zone at the stern and the wake behind the body. The results are compared with experimental flow measurements and with data obtained by LES, in order to evaluate how accurately the flow is predicted by each turbulence model. The study leads to method recommendations for this type of flows. Simulation results for two different bodies are also compared in order to investigate how the different shapes affect the flow. Also included is an overview of the turbulence modeling theory behind the RANS-methods which are employed. The results demonstrate that the turbulence models k−!,RNGk−!,k−"andk−"SST are suitable for simulation of this class of flows and provide a good prediction of the mean flow around and behind the body.
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Walker, Thomas K. III. "The development and requirements of a body force database from two-dimensional and streamline curvature calculations." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/51644.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2009.
Includes bibliographical references (p. 92-93).
This thesis presents a methodology for development of a body force database, from design conditions to flows below the stall point, for compressor stability analysis. The methodology is based on two-dimensional blade element calculations and a streamline curvature procedure to calculate the axisymmetric flow, although it can be extended to use three-dimensional calculations where available. The methodology is demonstrated by assembling the body force database and using it for a stability calculation. The connection between the stall onset behavior and the body forces near and below the stall point is established through a sensitivity assessment of the radial and axial distribution of the body forces. Comparisons are made with stall onset data obtained in a single stage axial compressor. Capturing the axial component of the body force is found to be key element in estimation of the stall point and stall inception type.
by Thomas K. Walker, III.
S.M.
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Zhang, Yi Yuan, and 張鎰源. "On the model tests for the hydrodynamic coefficients of an underwater vehicle with streamlined body." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/86427400275845470449.

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Lopes, Pedro Miguel Pereira. "Estudo de simulação numérica do escoamento aerodinâmico em torno de um veículo automóvel de alto desempenho." Master's thesis, 2013. http://hdl.handle.net/10316/38870.

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Dissertação de Mestrado Integrado em Engenharia Mecânica apresentada à Faculdade de Ciências e Tecnologia da Universidade de Coimbra
Pretende-se, com este trabalho, fazer o estudo aerodinâmico de um veículo automóvel perfilado que participou na competição Shell Eco-Marathon Europe 2011, inserido no projeto “Eco Veículo” do Departamento de Engenharia Mecânica da Universidade de Coimbra. O objetivo da competição é fazer um percurso numa pista fechada consumindo a menor quantidade possível de gasolina com um veículo monolugar. Para executar o estudo é usado o ANSYS, que é um programa de simulação para engenharia. É importada a geometria do veículo para o programa e criado o domínio de escoamento do ar. De seguida, este domínio é decomposto em milhões de volumes de controlo e são impostas as condições do escoamento do fluido, das superfícies em contacto e da simulação. Por fim, é feito o cálculo da simulação e são retirados os resultados relevantes e elucidativos do escoamento. O estudo foi efetuado com o veículo alinhado e desalinhado com o escoamento e com diferentes velocidades dentro da gama que o veículo atinge durante a competição. O estudo pretende caracterizar o comportamento aerodinâmico do veículo e melhorá-lo através de pequenas alterações geométricas. Foi estudada a introdução de um boleado (arredondamento da aresta) entre a forma superior e forma inferior do veículo. A conclusão retirada é que apesar de o boleado diminuir a área de contacto entre o fluido e o veículo, a força de arrasto aumenta devido à alteração das características da camada limite, o que faz com que a alteração não seja compensatória para este veículo.
This assignment is intended to make the aerodynamic study of a streamlined vehicle that participated in the Shell Eco-Marathon Europe 2011 competition, which is inserted in the “Eco Vehicle” project of the Department of Mechanical Engineering of the University of Coimbra. The purpose of the competition is to do a circuit in a closed track consuming the minimum amount of petrol possible with a single seat vehicle. This study is carried out by using the ANSYS, which is a simulation program for engineering. The geometry of the vehicle is imported to the program and it is created the domain of air flow. Afterwards this domain is divided into millions of elements and the conditions of the fluid flow, of the surfaces in contact and of the simulation are imposed. Finally the calculation of the simulation is made and the important and elucidative results of the flow are taken. This study was done with the car aligned and with different yaw angles and with different speeds inside the range that the vehicle reaches during the competition. The study intends to characterize the aerodynamic behavior of the car and to improve it through small geometric changes. The introduction of a fillet between the superior and inferior surfaces of the vehicle body was studied. The conclusion is that in spite of diminishing the contact area, the drag force increases due to the change of the characteristics of the boundary layer, which makes the change not compensatory for this vehicle.
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Books on the topic "Streamlined body"

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Zhu, Lian-di. A streamline-iteration method for calculating turbulent flow around the stern of a body of revolution and its wake. Wuxi, Jiansu, China: China Scientific Research Center, 1986.

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McNeil, Bryan T. Strained Solidarities. University of Illinois Press, 2017. http://dx.doi.org/10.5406/illinois/9780252036439.003.0005.

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This chapter examines the dramatic changes within the United Mine Workers of America (UMWA)—once the most powerful force in American organized labor. By the end of the twentieth century, the UMWA seemed incapable of organizing nonunion mines, even in the region that once provided its strongest support. Over its lifetime, the UMWA has moved through three distinct eras: confrontational organizing, labor brokerage, and crisis management. John L. Lewis' legacy as union president transformed the union from a fractured organizing body to a streamlined labor broker, negotiating contracts and winning the best possible wages and benefits. However, in Coal River, the community and environmental activism of the late 1990s emerged as a challenge to the leadership of the UMWA, this time demanding a strong stance against mountaintop removal.
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Meier, Benjamin Mason, and Virgínia Brás Gomes. Human Rights Treaty Bodies. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780190672676.003.0024.

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This chapter assesses the role of human rights treaty bodies in monitoring, interpreting, and adjudicating health-related human rights obligations, facilitating accountability for the realization of human rights in health policy. With each core human rights treaty having its own corresponding human rights treaty body, these international institutions influence states and galvanize advocates to take action to realize human rights across a range of global health issues. Describing treaty body efforts to monitor state implementation, interpret human rights, and adjudicate individual complaints, this chapter examines the evolving composition and functions of these treaty bodies and analyzes their effectiveness in facilitating the implementation of human rights as a basis for global health. Given recent United Nations efforts to strengthen treaty body functions and streamline monitoring processes, treaty bodies provide complementary approaches for public health practitioners to support accountability for the implementation of health-related human rights.
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The Pilates Body Kit: An Interactive Fitness Program to Strengthen, Streamline, and Tone (includes 2 audio cds, flash cards & workbook). St. Martin's Griffin, 2003.

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Antonios, Tzanakopoulos. Part I The International Law of Tainted Money, 5 International Legal Sources IV—the European Union and the Council of Europe. Oxford University Press, 2017. http://dx.doi.org/10.1093/law/9780198716587.003.0005.

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This chapter examines the European Union (EU) from the perspective of public international law. Financial crime, this chapter argues, is an international phenomenon that requires international solutions. This recognition has resulted in states cooperating on a number of different levels in order to streamline their responses to international financial crime. This chapter deals with the EU in two guises: as an independent source of international obligation for its member states, imposing discreet international obligations on them, which may even function so as to turn non-binding recommendations of international bodies into hard law, and as a peculiar entity interposing itself between international obligations from other sources (such as international treaties or UN Security Council binding resolutions) and domestic implementation of these obligations. The fact that some EU law has a more remote international source (such as a UN Security Council Resolution) may affect the degree and nature of the judicial scrutiny to which this body of law may be subject. The chapter looks first at sanctions and next at money laundering, both from the perspective of the EU.
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Book chapters on the topic "Streamlined body"

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Nishida, M., and A. Nakajima. "Spectroscopic Study of a Plasma Flow along the Stagnation Streamline of a Blunt Body." In Rarefied Gas Dynamics, 1367–74. Boston, MA: Springer US, 1985. http://dx.doi.org/10.1007/978-1-4613-2467-6_69.

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Goldfinger, Eliot. "Animals with Limb Variations Skeleton & Superficial Muscles (Side View)." In Animal Anatomy for Artists. Oxford University Press, 2004. http://dx.doi.org/10.1093/oso/9780195142143.003.0013.

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Kangaroo characteristics: Forelimb small; has five digits with strong claws. Large, powerful hind limb with long, strong, narrow foot. Muscular thigh; muscle mass of lower leg positioned on upper half, toward knee. In foot, large fourth and smaller fifth digits transmit force during locomotion; first digit missing, small digits two and three bound together by skin. Long tail, thick at base, used for body support at rest and balance during hopping. Fast locomotion is by leaping with hind limbs only. Walking: Hind limbs, forelimbs, and tail in contact with ground at various times. Sitting: Body rests on entire foot and tail; arms hang loosely. Pouch in female opens forward, supported by two long, thin bones. Sea lion characteristics: Webbed flipper-like forefoot and hind foot. Front flipper thicker on front edge. Skin of flipper extends past tips of toe bones, supported by individual cartilages attached to ends of toe bones. Noticeable claws on three middle toes of hind foot; other claws tiny and inconspicuous. Front flipper triangular; hind flipper rectangular. Hind limb can be advanced forward—can walk, but thigh and lower leg encased in skin of abdomen (seals can’t walk—their hind limbs permanently extended backward). Elbow also enclosed in body skin, but forearms are free. Body streamlined (torpedo-shaped) for swimming. Thick insulating blubber layer between skin and muscles. Thick, flexible, muscular neck. Pelvis and femur small. Sternum has forward projection. Small external ears present (absent in seals). Ears and slit-like nostrils can be closed under water. Short, stubby tail. Very short hair; fur much darker when wet. Body uniform in color (no spots). Males larger than females. Closely related to terrestrial carnivores. Pinniped is not scientific classification, but means “fin footed.”
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Rubin, Yoram. "An Overview of Stochastic Tools for Modeling Transport of Tracers in Heterogeneous Media." In Applied Stochastic Hydrogeology. Oxford University Press, 2003. http://dx.doi.org/10.1093/oso/9780195138047.003.0012.

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Spatial variability and the uncertainty in characterizing the flow domain play an important role in the transport of contaminants in porous media: they affect the pathlines followed by solute particles, the spread of solute bodies, the shape of breakthrough curves, the spatial variability of the concentration, and the ability to quantify any of these accurately. This chapter briefly reviews some basic concepts which we shall later employ for the analysis of solute transport in heterogeneous media, and also points out some issues we shall address in the subsequent chapters. Our exposition in chapters 8-10 on contaminant transport is built around the Lagrangian and the Eulerian approaches for analyzing transport. The Eulerian approach is a statement of mass conservation in control volumes of arbitrary dimensions, in the form of the advection-dispersion equation. As such, it is well suited for numerical modeling in complex flow configurations. Its main difficulties, however, are in the assignment of parameters, both hydrogeological and geochemical, to the numerical grid blocks such that the effects of subgrid-scale heterogeneity are accounted for, and in the numerical dispersion that occurs in advection-dominated flow situations. Another difficulty is in the disparity between the scale of the numerical elements and the scale of the samples collected in the field, which makes the interpretation of field data difficult. The Lagrangian approach focuses on the displacements and travel times of solute bodies of arbitrary dimensions, using the displacements of small solute particles along streamlines as its basic building block. Tracking such displacements requires that the solute particles do not transfer across streamlines. Since such mass transfer may only occur due to pore-scale dispersion, Lagrangian approaches are ideally suited for advection-dominated situations. Let us start by considering the displacement of a small solute body, a particle, as a function of time. “Small” here implies that the solute body is much smaller than the characteristic scale of heterogeneity. At the same time, to qualify for a description of its movement using Darcy’s law, the solute body also needs to be larger than a few pores. The small dimension of the solute body ensures that it moves along a single streamline and that it does not disintegrate due to velocity shear.
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Jacob, George, and Martina N. Cummins. "Common Organisms Responsible for Healthcare-associated Infection (HCAI)." In Tutorial Topics in Infection for the Combined Infection Training Programme. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780198801740.003.0026.

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MRSA are S. aureus which become methicillin resistant by the acquisition of the mec A gene which is on a mobile chromosomal determinant called staphylococcal cassette chromosome mec (SCC mec). The mec A gene encodes for a penicillin- binding protein (PBP2a) which has a low affinity for isoxazolyl-penicillins (MICs to oxacillin/ meticillin ≥ 4μg/ ml) and is resistant to all classes of beta-lactam antibiotics. Current Department of Health (DOH) guidance (2014) recommends that mandatory MRSA screening be streamlined to include only: ● All patient admissions to high- risk units; ● Healthcare workers; and ● All patients previously identified as colonized or infected with MRSA. The guidance also advises Trusts to follow local risk assessment policies to identify other potential high- risk units or units with a history of high endemicity of MRSA; and The guidance also recommends regular auditing of compliance with MRSA screening policy. The 2006 guideline for the control and prevention of MRSA in healthcare facilities recommends the following four measures. ● Isolation MRSA- positive patients should be nursed in a single room or if none is available, cohorting into a bay after risk assessment. Patient movement, and the number of staff and visitors looking after the patient, should be minimized. ● Hand hygiene and use of personal protective equipment (PPE) All staff and visitors should decontaminate their hands with soap and water/or an alcohol rub before and after contact with the patient or their immediate surroundings. Single-use disposable gloves and aprons/non- permeable gowns should be used by staff and visitors if there is a risk of contamination with body fluids. ● Disposal of waste and laundry All waste from colonized/ infected patients should be placed in the infectious waste stream. All linen and bedding from patients colonized/infected with MRSA should be considered as contaminated and processed as infected linen. ● Cleaning and decontamination The patient’s room should be cleaned/disinfected daily with an appropriate detergent/disinfectant as per local policy. On discharge of the patient, the room needs to be terminally cleaned before it is reused. All patient equipment should either be single-patient use or be cleaned, disinfected, and sterilized.
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Huang, Jiyou, Haiyan Zhu, Haifei Wei, Junhai Huang, and Qiying Xu. "Numerical Study on Noise Reduction of High-Speed Train Based on Non-Smooth Surface." In Advances in Transdisciplinary Engineering. IOS Press, 2020. http://dx.doi.org/10.3233/atde200219.

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In this paper, a 350 km/h high-speed train is taken as the research object. Using the realizable k-ε model to calculate the steady-state flow field around the train, based on the results, calculating aerodynamic noise source of the train body surface by using the broadband noise model. The drag, lift and acoustic data of the train with the non-smooth surface units arranged on different positions of the vehicle are analyzed and compared, so as to analyze the influence of the layout of the non-smooth surface units on the drag reduction and noise reduction of the train. The simulation results show that when the non-smooth surface units are arranged in the bogie area, the aerodynamic resistance of the head and the intermediate vehicle can be effectively reduced, with the drag reduction effect of 12.2% in the head vehicle and 26.9% in the intermediate vehicle; when the non-smooth surface units are arranged on the nose of the train, for the intermediate vehicle, the drag reduction effect is 9.3%, and 11.5% when arranged on the transition area; when the non-smooth surface units are arranged on the nose of the train, there are quite a number of scattered points of low surface acoustic power in the streamline area of the tail vehicle, in which the lowest surface acoustic power level is only 50 dB, which is 25.3% lower than that of the train without non-smooth surface units.
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Furbish, David Jon. "Inviscid Flows." In Fluid Physics in Geology. Oxford University Press, 1997. http://dx.doi.org/10.1093/oso/9780195077018.003.0014.

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This chapter covers an important step toward our development of dynamical equations of fluid motion. Herein we will develop explicit expressions for the forces that produce the fluid accelerations that we described kinematically in Chapter 7. In particular, we will consider the behavior of inviscid fluids. Viscous forces therefore are not involved; accelerations are wholly due to body forces and normal surface forces associated with fluid pressure. The results of our development are Euler’s equations, or the momentum equations for inviscid flow. One consequence of the inviscid assumption is that slip flow may occur at real boundaries, in contrast to the no-slip condition that occurs with real fluids. This is unrealistic for the viscous flows of interest in many geological problems. Nonetheless, situations exist in which viscous fluids can be treated as inviscid. Examples include fluids having small viscosity, and flows far from boundaries. The study of inviscid flow therefore is justified in its own right. A particularly important example involves the consideration of how velocity and pressure vary along a streamline, which leads to Bernoulli’s equation. Consider a rectangular control volume with edges of length dx, dy, and dz embedded within a local Cartesian coordinate system. This local system has an arbitrary orientation with respect to the Earth coordinate system; the x-axis is inclined at an angle α measured from the horizontal. Acceleration due to gravity g acts vertically, and the centroid of the control volume is at height h above a horizontal datum. The height h provides a measure of the position of the fluid within the gravitational field. Consider, now, forces acting on the control volume parallel to the x-axis. The weight W of fluid within the control volume possesses a component Wx parallel to the x-axis: . . . Wx = −ρg sin α dx dy dz . . . . . . (10.2) . . . where ρ is the fluid density, and the negative sign indicates that Wx acts in the direction of negative x.
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Conference papers on the topic "Streamlined body"

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Howell, Jeff, Max Varney, Eleanor Rajaratnam, and Martin Passmore. "A Wind Tunnel Study of the Windsor Body with a Streamlined Tail." In SAE WCX Digital Summit. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2021. http://dx.doi.org/10.4271/2021-01-0954.

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Baker, C. R., T. L. Jeans, A. G. Gerber, A. G. L. Holloway, and G. D. Watt. "Examination of the Flow Separation Characteristics Around a Streamlined Axisymmetric Shape." In ASME 2005 Fluids Engineering Division Summer Meeting. ASMEDC, 2005. http://dx.doi.org/10.1115/fedsm2005-77149.

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Using computational fluid dynamics (CFD), a study was conducted to predict the hydrodynamic forces and moments on an axisymmetric body over a range of yaw angles and Reynolds numbers. Computational results for hydrodynamic forces and moments show good agreement with experimental data, being within the experimental uncertainty range at most yaw angles. Deviations outside of the uncertainty range occurred for the lateral (Y) force values at yaw angles greater than 15 degrees. The development of the after-body vortex shows good agreement with experimental observation. Primary and secondary separation points and shear stress streamline behaviour are also compared with experiment data at a yaw angle of 24 degrees. Results are discussed with a view to identifying flow features critical to the development of new force estimation methods. The after-body vortex, at increasing yaw angles, influences the overall force and moment predictions through a complex interaction between the transport of after-body vorticity and the detachment/reattachment locations of the boundary layer. Adequate modeling of this after-body region is increasingly important at high yaw angles. One of the most important features that influences the overall forces and moments is the circumferential position of shear layer detachment and reattachment, which have a direct impact on the pressure distribution along the body.
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Shibkov, Valery, Andrew Alexandrov, Vladimir Chernikov, Alexey Ershov, Andrew Karachev, Roman Konstantinovskij, and I. Timofeev. "Influence of Surface Microwave Discharge on the Characteristics of Supersonic Flow near Streamlined Body." In 43rd AIAA Aerospace Sciences Meeting and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2005. http://dx.doi.org/10.2514/6.2005-779.

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Chen, Weishan, Dan Xia, Junkao Liu, and Ranran Wang. "Influence of Geometric Parameters on the Flow Drag of a Streamlined Body of Revolution." In 2010 4th International Conference on Bioinformatics and Biomedical Engineering (iCBBE). IEEE, 2010. http://dx.doi.org/10.1109/icbbe.2010.5517998.

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Nabhan, Mohamed B. W. "Heat Transfer and Fluid Flow Characteristics Over Streamlined Symmetrical Body Positioned at Unfavorable Angles to the Flow." In ASME/JSME 2011 8th Thermal Engineering Joint Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/ajtec2011-44007.

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Heat transfer rates and friction variations are experimentally presented for a horizontal pipe with the insertion of an airfoil made from aluminum alloy 6010-T4 of average roughness 0.4 μ m. The test foil is tested at two temperature conditions, cold and hot. Fully developed laminar airflow is maintained in the test duct section, which is connected to a sub-sonic wind tunnel. The airflow characteristics is determined at different flow speed and foil tilt positions. The heat transfer rate, drag force coefficient, and Reynolds number results show a strong dependence on the test foil angle positions. It’s found that the larger foil tilt angle position, the larger is the drag coefficient and the higher is the heat transfer rate. Infra red thermograph and computer simulation using Fluent code 6.3.26 are used to support the experimental work.
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Krishnankutty, Parameswaran, Subramanian Anantha, Roni Francis, Prabhasuthan Prabhakaran Nair, and Sudarsan Krishnamachari. "Experimental and Numerical Studies on an Underwater Towed Body." In ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/omae2014-24400.

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A streamlined form of underwater towed body is considered here for the experimental and CFD studies to verify its stability when towed in submerged condition. Its physical characteristics lead to different behavior in the hydrodynamic tow conditions. Influence of lifting fins and tow arrangements on the operational depth and stability of the tow body are studied. The main variants associated with the body, and which affect the tow characteristics, are identified as basic body shape, tow point location, fin size for stable tow and dynamic trim due to forward speed. In order not to disturb the flow around the sensor location, the fin is placed further away towards the lower aft end. Additionally, the stable tow is validated and demonstrated in the towing tank at IIT Madras using the scaled model. The drag and lift force values obtained from model tests are extrapolated to the prototype and compared with CFD results.
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Vasilevskiy, E. B., and L. V. Yakovleva. "The tangential gas injection as the means of heat protection of a blunt body streamlined by dusted gas." In Progress in Flight Physics. Les Ulis, France: EDP Sciences, 2012. http://dx.doi.org/10.1051/eucass/201203321.

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Lopes, A. M. G., and P. Carvalheira. "On the Application of Numerical Methods for the Calculation of the External Aerodynamics of a Streamlined Car Body." In SAE 2003 World Congress & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2003. http://dx.doi.org/10.4271/2003-01-1249.

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Jeans, T. L., C. R. Baker, A. G. L. Holloway, A. G. Gerber, and G. D. Watt. "A Critical Review of Classical Force Estimation Methods for Streamlined Underwater Vehicles Using Experimental and CFD Data." In ASME 2005 Fluids Engineering Division Summer Meeting. ASMEDC, 2005. http://dx.doi.org/10.1115/fedsm2005-77152.

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Classical hydrodynamic force estimation methods are widely used by industrial designers of underwater vehicles for whom captive model experiments and CFD based simulations are uneconomical. They are also used in the preliminary design of submarines and when real time submarine simulations are required. These methods poorly estimate the contribution of the hull to the forces, especially at moderate to high incidence angles. This paper critically reviews the classical hull force estimation methods developed by Munk, Allen, Perkins and Jorgensen, and Sarpkaya. It compares the methods with experimentally validated CFD predictions of a streamlined body at incidence angles up to 30 degrees and for Reynolds numbers from 2.3 to 230 million. The comparison shows that inadequately modeled flow separation and leeside body vortices explain the poor force and moment predictions. This is partly due, at least, to the lack of a streamlined tail on the truncated missile shapes for which the estimation methods were developed.
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Martynov, V. V., and E. A. Lukyanov. "AIRTIGHT MOBILE ROBOT FOR MONITORING THE STATE OF AGRICULTURAL FIELDS." In STATE AND DEVELOPMENT PROSPECTS OF AGRIBUSINESS Volume 2. DSTU-Print, 2020. http://dx.doi.org/10.23947/interagro.2020.2.24-27.

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The use of a mobile robot of an original design for solving monitoring tasks in agriculture is considered. The streamlined body shape, the absence of external movers and anti-adhesive coating significantly reduce the possibility of contamination even when working in the most adverse conditions. It has a simple and reliable design, low cost, easy to maintain. Two video cameras located in transparent protected hemispheres on the sides of the robot transmit to the remote control all the necessary information. Using the proposed airtight robot will reduce the cost of acquiring and maintaining monitoring equipment.
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