Relevant bibliographies by topics / Ohnesorge Number

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

Academic literature on the topic 'Ohnesorge Number'

Author: Grafiati
Published: 4 June 2021
Last updated: 7 February 2022

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Journal articles on the topic "Ohnesorge Number"

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Schulkes, R. M. S. M. "The contraction of liquid filaments." Journal of Fluid Mechanics 309 (February 25, 1996): 277–300. http://dx.doi.org/10.1017/s0022112096001632.

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In this paper the evolution of a free liquid filament of arbitrary viscosity, contracting under the action of surface tension forces, is studied by numerical means. A finite- element discretization procedure is used to obtain approximate solutions to the Navier-Stokes equations. A Lagrangian approach is employed to deal with the large domain deformations which occur during the evolution of the filament. Typically we find that during the contraction a bulbous region forms at the end of the filament. The character of the evolution of the filament is found to be crucially dependent on the value o
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Renoult, Marie-Charlotte, Günter Brenn, Gregor Plohl, and Innocent Mutabazi. "Weakly nonlinear instability of a Newtonian liquid jet." Journal of Fluid Mechanics 856 (October 3, 2018): 169–201. http://dx.doi.org/10.1017/jfm.2018.677.

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A weakly nonlinear stability analysis of an axisymmetric Newtonian liquid jet is presented. The calculation is based on a small-amplitude perturbation method and performed to second order in the perturbation parameter. The obtained solution includes terms derived from a polynomial approximation of a viscous contribution containing products of Bessel functions with different arguments. The use of such an approximation is not needed in the inviscid case and the planar case, since the equations of those problems can be solved in an exact form. The developed model depends on three dimensionless pa
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Varma, Sarath Chandra, Aniruddha Saha, Siddhartha Mukherjee, Aditya Bandopadhyay, Aloke Kumar, and Suman Chakraborty. "Universality in coalescence of polymeric fluids." Soft Matter 16, no. 48 (2020): 10921–27. http://dx.doi.org/10.1039/d0sm01663b.

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Miccichè, Carmelo, Giuseppe Arrabito, Francesco Amato, Gianpiero Buscarino, Simonpietro Agnello, and Bruno Pignataro. "Inkjet printing Ag nanoparticles for SERS hot spots." Analytical Methods 10, no. 26 (2018): 3215–23. http://dx.doi.org/10.1039/c8ay00624e.

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RAY, B., G. BISWAS, and A. SHARMA. "Generation of secondary droplets in coalescence of a drop at a liquid–liquid interface." Journal of Fluid Mechanics 655 (May 12, 2010): 72–104. http://dx.doi.org/10.1017/s0022112010000662.

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When a droplet of liquid 1 falls through liquid 2 to eventually hit the liquid 2–liquid 1 interface, its initial impact on the interface can produce daughter droplets of liquid 1. In some cases, a partial coalescence cascade governed by self-similar capillary-inertial dynamics is observed, where the fall of the secondary droplets in turn continues to produce further daughter droplets. Results show that inertia and interfacial surface tension forces largely govern the process of partial coalescence. The partial coalescence is suppressed by the viscous force when Ohnesorge number is below a crit
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Asthana, Rishi, Mukesh Kumar Awasthi, and G. S. Agrawal. "Viscous Potential Flow Analysis of Rayleigh-Taylor Instability of Cylindrical Interface." Applied Mechanics and Materials 110-116 (October 2011): 769–75. http://dx.doi.org/10.4028/www.scientific.net/amm.110-116.769.

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The present paper deals with the study of Rayleigh-Taylor instability at the cylindrical interface using viscous potential flow theory. In the inviscid potential flow theory, the viscous term in Navier-Stokes equation vanishes as viscosity is zero. In viscous potential flow, the viscous term in Navier-Stokes equation vanishes as vorticity is zero but viscosity is not zero. Viscosity enters through normal stress balance in viscous potential flow theory and tangential stresses are not considered. A dispersion relation is derived and stability is discussed in terms of various parameters such as O
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Iwasawa, Yuzuru, Yutaka Abe, Akiko Kaneko, et al. "ICONE23-1950 NUMERICAL STUDY ON INFLUENCE OF OHNESORGE NUMBER AND REYNOLDS NUMBER ON THE JET BREAKUP BEHAVIOR USING THE LATTICE BOLTZMANN METHOD." Proceedings of the International Conference on Nuclear Engineering (ICONE) 2015.23 (2015): _ICONE23–1—_ICONE23–1. http://dx.doi.org/10.1299/jsmeicone.2015.23._icone23-1_444.

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Xue, Xinzhi, and Joseph Katz. "Refractive index matched visualization and particle image velocimetry measurements of initial breakup of turbulent oil jet." International Oil Spill Conference Proceedings 2017, no. 1 (2017): 2017328. http://dx.doi.org/10.7901/2169-3358-2017.1.000328.

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Subsurface oil well blowouts create buoyant, immiscible jets and plumes. Turbulent breaks jets into oil droplets with sizes ranging from several millimeters to sub-microns. The fate of oil droplets largely depends on their sizes. The physics of single thread of fluid breaks into several smaller droplets in low Reynolds number and Ohnesorge number can be well explained by Plateau-Rayleigh instability. However, when Reynolds number and Ohnesorge number are high, namely the atomization regime, the physics of high-speed jet fragments into a wide range of droplets is not well understood. Because of
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Krishnan, Sangeeth, E. J. Hopfinger, and Baburaj A. Puthenveettil. "On the scaling of jetting from bubble collapse at a liquid surface." Journal of Fluid Mechanics 822 (June 8, 2017): 791–812. http://dx.doi.org/10.1017/jfm.2017.214.

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We present scaling laws for the jet velocity resulting from bubble collapse at a liquid surface which bring out the effects of gravity and viscosity. The present experiments conducted in the range of Bond numbers $0.004<Bo<2.5$ and Ohnesorge numbers $0.001<Oh<0.1$ were motivated by the discrepancy between previous experimental results and numerical simulations. We show here that the actual dependence of $We$ on $Bo$ is determined by the gravity dependency of the bubble immersion (cavity) depth which has no power-law variation. The power-law variation of the jet Weber number, $We\si
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DING, HANG, and PETER D. M. SPELT. "Inertial effects in droplet spreading: a comparison between diffuse-interface and level-set simulations." Journal of Fluid Mechanics 576 (March 28, 2007): 287–96. http://dx.doi.org/10.1017/s0022112007004910.

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Axisymmetric droplet spreading is investigated numerically at relatively large rates of spreading, such that inertial effects become important. Results from two numerical methods that use different means to alleviate the stress singularity at moving contact lines (a diffuse interface, and a slip-length-based level-set method) are shown to agree well. An initial inertial regime is observed to yield to a regime associated with Tanner's law at later times. The spreading rate oscillates during the changeover between these regimes. This becomes more significant for a fixed (effective) slip length w
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Dissertations / Theses on the topic "Ohnesorge Number"

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(5930801), Vishnu Radhakrishna. "CHARACTERIZATION OF SECONDARY ATOMIZATION AT HIGH OHNESORGE NUMBERS." Thesis, 2019.

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<p>A droplet subjected to external aerodynamic disturbances disintegrates into smaller droplets and is known as secondary atomization. Droplet breakup has been studied for low Ohnesorge (<b><i>Oh < </i></b>0.1) numbers and good agreement has been seen amongst researchers. However, when it comes to cases with high the <b><i>Oh</i></b> number, i.e. atomization where the influence of viscosity is significant, very little data is available in the literature and poor agreement is seen amongst researchers. </p> <p> </p> <p>This thesis presents a complete analysis of the modes of deformation and br
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Book chapters on the topic "Ohnesorge Number"

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"Ohnesorge Number." In Encyclopedia of Microfluidics and Nanofluidics. Springer New York, 2015. http://dx.doi.org/10.1007/978-1-4614-5491-5_200195.

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"Management of Flow of Cleaning Solvents to Wet Surfaces (The Wettability Index and the Dimensionless Ohnesorge Number)." In Cleaning with Solvents. Elsevier, 2014. http://dx.doi.org/10.1016/b978-1-4557-3131-2.15006-9.

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Conference papers on the topic "Ohnesorge Number"

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Tai, Jiayan, Hiong Yap Gan, Yen Nan Liang, and Boon Keng Lok. "Control of Droplet Formation in Inkjet Printing Using Ohnesorge Number Category: Materials and Processes." In 2008 10th Electronics Packaging Technology Conference (EPTC). IEEE, 2008. http://dx.doi.org/10.1109/eptc.2008.4763524.

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Aryafar, H., and H. P. Kavehpour. "Important Parameters in Drop Coalescence at Planar Surfaces." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-81806.

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An experimental study has been performed to establish the principal elements that govern drop coalescence. The study consisted of placing drops of various sizes and physical properties on a planar interface. The coalescence process was recorded with the aid of a high speed digital camera. The experimental portion of the project was aimed at capturing the time of coalescence and the size of the secondary drop that formed after coalescence had finished. Results of the experiments, when scaled properly, showed clear patterns with respect to inertial and viscous terms. Dimensional analysis indicat
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Kitabayashi, Sota, Koji Enoki, and Tomio Okawa. "Experiments on the Splashing Limit During Drop Impact Onto a Thin Liquid Film." In 2017 25th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/icone25-67021.

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The phenomenon of secondary droplet production during single drop impingement onto a liquid film is encountered in many industrial situations. Typical examples in the field of nuclear engineering are the spray cooling of hot surface and the atomization of radioactive liquids in severe accident. Therefore, the prediction of the onset of secondary droplet production is very important. It is known that the two types of droplet splashing mechanisms are present: the prompt splash and the late splash. The main purpose of this research is to determine the splashing limit separately for the prompt spl
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Jung, Rho-Taek, and Toru Sato. "A Droplet Simulation on Motion Topology With Mass Transfer Using Moving Unstructured Mesh." In ASME 2002 Joint U.S.-European Fluids Engineering Division Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/fedsm2002-31144.

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A direct simulation code for a moving and dissolving droplet by using three-dimensional hybrid unstructured mesh was developed. The multi-phase flow field is discretised by a cell-centred finite volume ALE (arbitrary Lagrangian Eulerian) formulation. Based on the fractional step method, a semi-implicit scheme in time is used. Other numerical aspects of the present method are the method of Rhie and Chow (1983) for incompressibility, a third-order compact upwinding for convection term, and a second-order central difference for diffusion term. The mesh consists of tetrahedron prisms near interfac
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Taeibi-Rahni, Mohammad, and Shervin Sharafatmand. "Effects of Non-Dimensional Parameters on Formation and Break Up of Cylindrical Droplets." In ASME 2004 Heat Transfer/Fluids Engineering Summer Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/ht-fed2004-56879.

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The consistent behavior of non-dimensional parameters on the formation and break up of large cylindrical droplets has been studied by direct numerical simulations (DNS). A one-fluid model with a finite difference method and an advanced front tracking scheme was employed to solve unsteady, incompressible, viscous, immiscible, multi-fluid, two-dimensional Navier-Stokes equations. This time dependent study allows investigation of evolution of the droplets in different cases. For moderate values of Atwood number (AT), increasing Eotvos number (Eo) explicitly increases the deformation rate in both
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Sommerfeld, Martin, and Santiago Lain. "Numerical analysis of sprays with an advanced collision model." In ILASS2017 - 28th European Conference on Liquid Atomization and Spray Systems. Universitat Politècnica València, 2017. http://dx.doi.org/10.4995/ilass2017.2017.4785.

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Modelling of collisions between liquid droplets in the frame of a Lagrangian spray simulation has still many openissues, especially when considering higher viscous droplets and if colliding droplets have a large size difference. A generalisation of the collision maps is attempted based on the behaviour of characteristic points, namely the triple point where bouncing, coalescence and stretching separation coincide and the critical Weber-number where reflexive separation first occurs in head-on collisions. This is done by correlating experimental data with respect to the Capillary number with th
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Sinclair, Jarrod, and Sylvester Abanteriba. "Characterization of Liquid Sheet Breakup Using Numerical Experiments." In ASME 2012 Fluids Engineering Division Summer Meeting collocated with the ASME 2012 Heat Transfer Summer Conference and the ASME 2012 10th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/fedsm2012-72414.

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For the plain orifice nozzle configuration, breakup mode analysis of the issuing liquid jet has been extensively, over the years, undertaken. The works of Rayleigh, Haenlein, Ohnesorge, Reitz and others have used an Ohnesorge-Reynolds chart to clearly characterize breakup into four distinct modes. These include: (1) Rayleigh, (2) first wind induced, (3) second wind induced, and (4) prompt atomization. Planar liquid sheet flows have not undergone such intensive characterization analysis. In this work a non-expanding (nor thinning) liquid sheet is injected into a quiescent volume of gas from a p
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Wang, Shao-lin, Yong Huang, Fang Wang, Zhi-lin Liu, and Lei Liu. "On the Breakup Process of Round Liquid Jets in Gaseous Crossflows at Low Weber Number." In ASME Turbo Expo 2013: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/gt2013-94696.

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Liquid jets in cross air flows are widely used and play an important role in propulsion systems, such as ramjet combustors. In this paper, experiments were carried out to investigate the properties of the primary breakup of liquid jets in subsonic transverse airflows at low Weber number. The test ranges included crossflow Weber numbers of 0.5–6.7, liquid-to-gas momentum ratios of 3–120, and Ohnesorge number of 0.0086. Four different injectors with diameter 0.4mm, 0.5mm, 0.6mm and 1mm have been used. A high speed camera was used to observe the jet column breakup process. Results show that the s
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Pearson, John T., Daniel Maynes, David Bilodeau, and Brent W. Webb. "Two-Pronged Jet Formation Caused by Droplet Impact on Anisotropic Superhydrophobic Surfaces." In ASME 2013 Fluids Engineering Division Summer Meeting. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/fedsm2013-16629.

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When a liquid droplet impacts a superhydrophobic surface with anisotropic surface patterning in the form of alternating ribs and cavities, the rebounding droplet may exhibit a unique two-pronged jet emission. Droplet impact experiments with eleven different fluids of viscosity that varied by more than three orders of magnitude were conducted, and this paper quantifies the Capillary number, Ca, and Ohnesorge number, Oh, ranges over which the two-pronged phenomenon occurs. For Oh &gt; 0.0154, the behavior was never observed, while at lower values of Oh, the behavior occurs for an intermediate ra
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Borthakur, Manash Pratim, Binita Nath, Gautam Biswas, and Dipankar Bandyopadhyay. "Formation and Breakup of Liquid Jets Curved by Gravity." In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-71608.

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The formation and breakup of a liquid jet in air with gravity acting perpendicular to the direction of the jet is studied computationally. The liquid jet follows a parabolic path due to the influence of gravity which curves the jet trajectory. Both symmetric and asymmetric perturbations develop on the liquid surface which lead to jet breakup with varying droplet size distribution. The limiting length of the jet at breakup increases with increase in the Weber number and Ohnesorge number. At higher value of Weber number, the liquid jet traverses a longer horizontal distance when released from th
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