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Journal articles on the topic 'The Age of Turbulence'

Author: Grafiati

Published: 4 June 2021

Last updated: 28 July 2025

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1

Gharib, Morteza. "Perspective: The Experimentalist and the Problem of Turbulence in the Age of Supercomputers." Journal of Fluids Engineering 118, no. 2 (1996): 233–42. http://dx.doi.org/10.1115/1.2817368.

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Due to the rising capabilities of computational fluid mechanics (CFD), the role of the experimentalist in solving the problem of turbulence has come under serious question. However, after much initial excitement by the prospect of CFD, the basic understanding of non-linear fluid phenomena such as turbulence still remains a grand challenge and will remain so into the unforeseeable future. It appears that in order to accelerate the development of a comprehensive and practical understanding and modeling of turbulence, it is required that a constructive synergism between experiments and simulation

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2

Silantieva, M. V., and V. S. Glagolev. "Moral Paradoxes of the Age of Turbulence." Concept: philosophy, religion, culture 8, no. 1 (2024): 160–62. http://dx.doi.org/10.24833/2541-8831-2024-1-29-160-162.

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MGIMO University annually hosts an international conference held in the memory of Professor A. F. Shishkin, a distinguished soviet ethicist and the founder of the Department of Philosophy of the university. The latest 29th Shishkin Readings took place in MGIMO University on December 23, 2023, and was devoted to ethical issues in the age of ever-increasing turbulence. M. A. Shishkin and A. V. Shestopal greeted the participants, and V. S. Glagolev gave an opening talk on the requirements a modern person should meet and a moral compass in the turbulent social context. There followed plenary and b

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3

Duraisamy, Karthik, Gianluca Iaccarino, and Heng Xiao. "Turbulence Modeling in the Age of Data." Annual Review of Fluid Mechanics 51, no. 1 (2019): 357–77. http://dx.doi.org/10.1146/annurev-fluid-010518-040547.

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Data from experiments and direct simulations of turbulence have historically been used to calibrate simple engineering models such as those based on the Reynolds-averaged Navier–Stokes (RANS) equations. In the past few years, with the availability of large and diverse data sets, researchers have begun to explore methods to systematically inform turbulence models with data, with the goal of quantifying and reducing model uncertainties. This review surveys recent developments in bounding uncertainties in RANS models via physical constraints, in adopting statistical inference to characterize mode

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Baring, Matthew G. "X-ray Synchrotron Polarization from Turbulent Plasmas in Supernova Remnants." Proceedings of the International Astronomical Union 12, S331 (2017): 242–47. http://dx.doi.org/10.1017/s174392131700480x.

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AbstractAs supernova remnants (SNRs) age, they become efficient cosmic ray accelerators at their outer shell shocks. The current paradigm for shock acceleration theory favors turbulent field environs in the proximity of these shocks, turbulence driven by current instabilities involving energetic ions. With the imminent prospect of dedicated X-ray polarimeters becoming a reality, the possibility looms of probing turbulence on scales that couple to the super-TeV electrons that emit X-rays. This paper presents model X-ray polarization signatures from energetic electrons moving in simulated MHD tu

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Dobren'kov, Moderator V. I. "Education in an Age of Social Turbulence." Russian Education & Society 54, no. 12 (2012): 3–96. http://dx.doi.org/10.2753/res1060-9393541201.

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6

Thakur, Ramesh. "Nuclear Turbulence in the Age of Trump." Diplomacy & Statecraft 29, no. 1 (2018): 105–28. http://dx.doi.org/10.1080/09592296.2017.1420531.

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7

Shi, John Z. "Some Early Studies of Isotropic Turbulence: A Review." Atmosphere 15, no. 4 (2024): 494. http://dx.doi.org/10.3390/atmos15040494.

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A re-examination of some early classic turbulence literature, mainly of isotropic turbulence, is given in this selective review. Some early studies, including original concepts and points, are reviewed or highlighted. Two earliest studies and six major original concepts are found: (i) Lord Kelvin’s pioneering elementary studies of homogeneous, isotropic turbulence; (ii) Kelvin’s early introduction of Fourier Principles into turbulence studies; (iii) the Kelvin elementary concept of the direct energy cascade; (iv) the Kelvin early concept of the symmetry of turbulence; (v) the Taylor concept of

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YANG, DI, and LIAN SHEN. "Direct-simulation-based study of turbulent flow over various waving boundaries." Journal of Fluid Mechanics 650 (March 24, 2010): 131–80. http://dx.doi.org/10.1017/s0022112009993557.

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We use direct numerical simulation of stress-driven turbulent Couette flows over waving surfaces to study turbulence in the vicinity of water waves. Mechanistic study is performed through systematic investigation of different wavy surface conditions including plane progressive Airy and Stokes waves with and without wind-induced surface drift, as well as stationary wavy walls and vertically waving walls for comparison. Two different wave steepness values ak = 0.1 and 0.25 are considered, where a is the wave amplitude and k is the wavenumber. For effects of wave age, defined as the ratio between

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Goldman, Itzhak. "The SMC super-shells as probes of the turbulent dynamics of the ISM." Proceedings of the International Astronomical Union 2, S237 (2006): 96–100. http://dx.doi.org/10.1017/s1743921307001287.

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AbstractThe spatial power spectrum of the HI 21 cm intensity in the Small Magellanic Cloud (Stanimirovic et al. 1999) is a power law over scales as large as those of the SMC itself. It was interpreted as due to turbulence by Goldman (2000) and by Stanimirovic & Lazarian (2001). The question is whether the power spectrum is indeed the result of a dynamical turbulence or is merely the result of a structured static density. In the turbulence interpretation of Goldman (2000) the turbulence was generated by the tidal effects of the last close passage of the LMC about 0.2 Gyr ago. The turbulence

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10

Bolt, Neville. "ContentsForewordIs this the Age of Disinformation or the Age of Strategic Communications?" Defence Strategic Communications 14 (June 3, 2024): 5–25. http://dx.doi.org/10.30966/2018.riga.14.1.

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This is not as abstruse a question as might first appear at a time when many governments around the world are enthusiastically embracing what they believe to be the latter, only to conflate it unwittingly with its more empirical cousin. In short, there is a difference between these two concepts. And how one understands each has consequences for how we approach the turbulence of politics and geopolitics in the early twenty-first century.How to bridge the two conceptually becomes the innovative challenge for both emergent disciplines.

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11

Aldcroft, Derek H. "Eastern Europe in an Age of Turbulence, 1919-1950." Economic History Review 41, no. 4 (1988): 592. http://dx.doi.org/10.2307/2596603.

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12

Zahra, Shaker A. "International Entrepreneurship (IE) in the Age of Political Turbulence." Academy of Management Discoveries 6, no. 2 (2020): 172–75. http://dx.doi.org/10.5465/amd.2019.0076.

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13

Casson, Mark. "International business policy in an age of political turbulence." Journal of World Business 56, no. 6 (2021): 101263. http://dx.doi.org/10.1016/j.jwb.2021.101263.

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14

McNutt, Jacquelyn-Danielle. "A Review of “Transformation in the Age of Turbulence”." Journal of Enterprise Transformation 1, no. 1 (2011): 93–94. http://dx.doi.org/10.1080/19488289.2010.550985.

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15

Khangeldieva, Irina Georgievna. "Digital age: is it possible to outstrip education?" Moscow University Pedagogical Education Bulletin, no. 3 (June 30, 2018): 48–60. http://dx.doi.org/10.51314/2073-2635-2018-3-48-60.

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The article raises the question of the possibility of advanced education in conditions of social turbulence, uncertainty and unpredictability of the development of the labor market and, accordingly, of certain human capital that may be in demand in the absence of a specific request.

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16

Yang, Di, and Lian Shen. "Direct numerical simulation of scalar transport in turbulent flows over progressive surface waves." Journal of Fluid Mechanics 819 (April 18, 2017): 58–103. http://dx.doi.org/10.1017/jfm.2017.164.

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The transport of passive scalars in turbulent flows over progressive water waves is studied using direct numerical simulation. A combined pseudo-spectral and finite-difference scheme on a wave-surface-fitted grid is used to simulate the flow and scalar fields above the wave surface. Three representative wave ages (i.e. wave-to-wind speed ratios) are considered, corresponding to slow, intermediate and fast wind-waves, respectively. For each wave condition, four Schmidt numbers are considered for the scalar transport. The presence of progressive surface waves is found to induce significant wave-

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Yang, Zixuan, Bing-Qing Deng, and Lian Shen. "Direct numerical simulation of wind turbulence over breaking waves." Journal of Fluid Mechanics 850 (July 4, 2018): 120–55. http://dx.doi.org/10.1017/jfm.2018.466.

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We study wind turbulence over breaking waves based on direct numerical simulation (DNS) of two-fluid flows. In the DNS, the air and water are simulated as a coherent system, with the interface captured using the coupled level-set and volume-of-fluid method. Because the wave breaking is an unsteady process, we use ensemble averaging over 100 runs to define turbulence statistics. We focus on analysing the turbulence statistics of the airflow over breaking waves. The effects of wave age and wave steepness are investigated. It is found that before wave breaking, the turbulence statistics are large

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18

Mik, V., J. Myska, Z. Chara, and P. Stern. "Durability of a Drag Reducing Solution." Applied Rheology 18, no. 1 (2008): 12421–1. http://dx.doi.org/10.1515/arh-2008-0001.

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AbstractEffectiveness of drag reduction by small addition of a surfactant in the turbulent flow of water depends on the structure and concentration of the additive, temperature of the solution and turbulence intensity, possible flow disturbance by a mechanical obstacle and the content of ions in water, but also on the age of the surfactant solution. We show how important aging effects are in connection with total surfactant concentration, in particular how rheological parameters of the drag reducing solution change with time.

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19

van Donkelaar, Floor, Oscar Agertz, and Florent Renaud. "From giant clumps to clouds – II. The emergence of thick disc kinematics from the conditions of star formation in high redshift gas rich galaxies." Monthly Notices of the Royal Astronomical Society 512, no. 3 (2022): 3806–14. http://dx.doi.org/10.1093/mnras/stac692.

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ABSTRACT High-redshift disc galaxies are more gas rich, clumpier, and more turbulent than local Universe galaxies. This early era of galaxy formation imprints the distribution and kinematics of the stars that we observe today, but it is not yet well established how. In this work, we use simulations of isolated Milky Way-mass disc galaxies to study how kinematic properties of stars change when varying the gas fraction. This allows us to quantify the roles played by internal processes, e.g. gas turbulence and gravitational scattering off massive gas clumps, in establishing the observed stellar v

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20

Matthaeus, William H., Charles W. Smith, and Sean Oughton. "Dynamical age of solar wind turbulence in the outer heliosphere." Journal of Geophysical Research: Space Physics 103, A4 (1998): 6495–502. http://dx.doi.org/10.1029/97ja03729.

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21

Kowalewski, Marek, Marek Alifier, Dariusz Bochen, and Mirosława Urban. "Heart Rate Turbulence in Children—Age and Heart Rate Relationships." Pediatric Research 62, no. 6 (2007): 710–14. http://dx.doi.org/10.1203/pdr.0b013e3181598836.

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22

De Grauwe, Paul. "The Risks of Being Chairman in the Age of Turbulence." International Finance 11, no. 1 (2008): 109–15. http://dx.doi.org/10.1111/j.1468-2362.2008.00213.x.

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23

Kubalskyi, Oleh. "SCIENTIFIC COMMUNICATION IN THE AGE OF GLOBALIZATION AND SOCIAL TURBULENCE." Educational Discourse: collection of scientific papers, no. 41(7-9) (2022): 18–26. http://dx.doi.org/10.33930/ed.2019.5007.41(7-9)-2.

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Science in the modern sense as an experimental science was born only in the 16th century. Despite the fact that even in antiquity the process of accumulation and systematization of knowledge acquired a high level of empirical and practical status, it was far from a rational level. The science of antiquity offered solutions to specific problems, while science in its modern sense operates with theorems and axioms. With the development of science, since the 17th century, the practice of scientific communication has been formed in Europe. Scientific communication through correspondence brought tog

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24

Ezato, K., A. M. Shehata, T. Kunugi, and D. M. McEligot. "Numerical Prediction of Transitional Features of Turbulent Forced Gas Flows in Circular Tubes With Strong Heating." Journal of Heat Transfer 121, no. 3 (1999): 546–55. http://dx.doi.org/10.1115/1.2826015.

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In order to treat strongly heated, forced gas flows at low Reynolds numbers in vertical circular tubes, the k-ε turbulence model of Abe, Kondoh, and Nagano (1994), developed for forced turbulent flow between parallel plates with the constant property idealization, has been successfully applied. For thermal energy transport, the turbulent Prandtl number model of Kays and Crawford (1993) was adopted. The capability to handle these flows was assessed via calculations at the conditions of experiments by Shehata (1984), ranging from essentially turbulent to laminarizing due to the heating. Predicti

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25

Pospelova, T. I., Yu A. Nikolaev, and S. G. Kishkurno. "Interrelation of the heart rate turbulence with the clinical, functional and morphometric parameters among the patients with arterial hypertension." Patologiya krovoobrashcheniya i kardiokhirurgiya 17, no. 2 (2015): 63. http://dx.doi.org/10.21688/1681-3472-2013-2-63-66.

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There have been explored 225 males in the age from 50 to 74 with an arterial hypertension (AH). For all the patients there have been carried out the recording of electrocardiogram (ECG) in the state of rest, ECG monitoring with a Holter identify indicators heart rate turbulence (HRT) and dynamic load testing (test with a 6 minute walk test, treadmill and bicycle ergometry). There was founded, that among the patients with an arterial hypertension after 50 years the number of ventricular premature beats grows up. With increasing of the age the normal values decrease and the pathological values i

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26

Neverov, A. "Psychological Science and Global World: Challenges in the Age of Turbulence." Психологический журнал 39, no. 6 (2018): 119–23. http://dx.doi.org/10.31857/s020595920002259-0.

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27

Ara, Talat. "FROM MARKET TURBULENCE TO TRIUMPH: USHERING IN AMERICA’S ECONOMIC GOLDEN AGE." Journal of Advance Research in Social Science and Humanities (ISSN 2208-2387) 9, no. 11 (2023): 40–50. https://doi.org/10.61841/as72e067.

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The global trade was also significantly disrupted but to a large?extent, exacerbated such an instability in world economy as a result of COVID-19 pandemic. This brief provides insight into the role of market intermediaries (wholesalers,?distributors, logistics companies, etc.) and how they take advantage of the crisis to hike up prices and game the system of global value chains. And as factories started coming back online from the pandemic closure, prices of many essentials, like food and clothing, stayed elevated anyway, suggesting?the price increases were more from opportunism than from actu

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28

Zajac, David J. "Obligatory Nasal Turbulence as a Trigger for the Development of Posterior Nasal Fricatives in a Child With Repaired Cleft Palate." Cleft Palate-Craniofacial Journal 56, no. 5 (2018): 690–96. http://dx.doi.org/10.1177/1055665618805889.

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Posterior nasal fricatives (PNFs) are unusual articulations that occur in some children with and without cleft palate. The etiology of PNFs is unclear. A young girl with repaired cleft palate is described who exhibited inconsistent obligatory nasal turbulence during production of stops at 2 years of age. At 3 years of age, she exhibited various phonological processes and used PNFs to replace sibilants and affricates. Pressure-flow testing showed a relatively small velopharyngeal area during production of stops. These observations are consistent with obligatory nasal turbulence triggering the d

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Sullivan, Peter P., James B. Edson, Tihomir Hristov, and James C. McWilliams. "Large-Eddy Simulations and Observations of Atmospheric Marine Boundary Layers above Nonequilibrium Surface Waves." Journal of the Atmospheric Sciences 65, no. 4 (2008): 1225–45. http://dx.doi.org/10.1175/2007jas2427.1.

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Abstract Winds and waves in marine boundary layers are often in an unsettled state when fast-running swell generated by distant storms propagates into local regions and modifies the overlying turbulent fields. A large-eddy simulation (LES) model with the capability to resolve a moving sinusoidal wave at its lower boundary is developed to investigate this low-wind/fast-wave regime. It is used to simulate idealized situations with wind following and opposing fast-propagating waves (swell), and stationary bumps. LES predicts momentum transfer from the ocean to the atmosphere for wind following sw

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Kiyani, Khurom H., Kareem T. Osman, and Sandra C. Chapman. "Dissipation and heating in solar wind turbulence: from the macro to the micro and back again." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 373, no. 2041 (2015): 20140155. http://dx.doi.org/10.1098/rsta.2014.0155.

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The past decade has seen a flurry of research activity focused on discerning the physics of kinetic scale turbulence in high-speed astrophysical plasma flows. By ‘kinetic’ we mean spatial scales on the order of or, in particular, smaller than the ion inertial length or the ion gyro-radius—the spatial scales at which the ion and electron bulk velocities decouple and considerable change can be seen in the ion distribution functions. The motivation behind most of these studies is to find the ultimate fate of the energy cascade of plasma turbulence, and thereby the channels by which the energy in

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31

Urbanik, Dominika, Paweł Gać, Helena Martynowicz, et al. "Obstructive Sleep Apnea as a Predictor of Abnormal Heart Rate Turbulence." Journal of Clinical Medicine 9, no. 1 (2019): 1. http://dx.doi.org/10.3390/jcm9010001.

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Obstructive sleep apnea (OSA) causes dysfunction of the autonomic nervous system, but the exact mechanism has not been fully understood. The aim of this study was to analyse the relationship between the incidence and severity of OSA and heart rate turbulence (HRT). Seventy one patients with clinical suspicion of OSA were qualified to participate in the study. All participants took part in a survey and were subjected to laboratory tests, 24-hour electrocardiogram (ECG) Holter monitoring with HRT analysis and polysomnography. The group with OSA manifested significantly higher turbulence onset (T

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32

Hao, Xuanting, and Lian Shen. "Wind–wave coupling study using LES of wind and phase-resolved simulation of nonlinear waves." Journal of Fluid Mechanics 874 (July 9, 2019): 391–425. http://dx.doi.org/10.1017/jfm.2019.444.

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We present a study on the interaction between wind and water waves with a broad-band spectrum using wave-phase-resolved simulation with long-term wave field evolution. The wind turbulence is computed using large-eddy simulation and the wave field is simulated using a high-order spectral method. Numerical experiments are carried out for turbulent wind blowing over a wave field initialised using the Joint North Sea Wave Project spectrum, with various wind speeds considered. The results show that the waves, together with the mean wind flow and large turbulent eddies, have a significant impact on

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33

Li, Xishu, Maarten Voorneveld, and René de Koster. "Business transformation in an age of turbulence – Lessons learned from COVID-19." Technological Forecasting and Social Change 176 (March 2022): 121452. http://dx.doi.org/10.1016/j.techfore.2021.121452.

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34

Uesugi, Yoichiro, Yosuke Miwa, Mutsumi Miyakoshi, et al. "Effects of Age and Gender on Heart Rate Turbulence in Healthy Population." Journal of Arrhythmia 27, Supplement (2011): PJ2_036. http://dx.doi.org/10.4020/jhrs.27.pj2_036.

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35

Sullivan, Peter P., James C. McWilliams, and Edward G. Patton. "Large-Eddy Simulation of Marine Atmospheric Boundary Layers above a Spectrum of Moving Waves." Journal of the Atmospheric Sciences 71, no. 11 (2014): 4001–27. http://dx.doi.org/10.1175/jas-d-14-0095.1.

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Abstract Momentum and scalar transport in the marine atmospheric boundary layer (MABL) is driven by a turbulent mix of winds, buoyancy, and surface gravity waves. To investigate the interaction between these processes, a large-eddy simulation (LES) model is developed with the capability to impose a broadband spectrum of time-varying finite-amplitude surface waves at its lower boundary. The LES model adopts a Boussinesq flow model and integrates the governing equations on a time-varying, surface-fitted, nonorthogonal mesh using cell-centered variables with special attention paid to the solution

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36

Shi, C., M. Velli, O. Panasenco, et al. "Alfvénic versus non-Alfvénic turbulence in the inner heliosphere as observed by Parker Solar Probe." Astronomy & Astrophysics 650 (June 2021): A21. http://dx.doi.org/10.1051/0004-6361/202039818.

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Context. Parker Solar Probe (PSP) measures the magnetic field and plasma parameters of the solar wind at unprecedentedly close distances to the Sun. These data provide great opportunities to study the early-stage evolution of magnetohydrodynamic (MHD) turbulence in the solar wind. Aims. In this study, we make use of the PSP data to explore the nature of solar wind turbulence focusing on the Alfvénic character and power spectra of the fluctuations and their dependence on the distance and context (i.e., large-scale solar wind properties), aiming to understand the role that different effects such

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37

Montalbán, Josefina, and Evry Schatzman. "Mixing by Internal Waves." International Astronomical Union Colloquium 137 (1993): 281–83. http://dx.doi.org/10.1017/s0252921100017929.

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That mixing take place in the radiative zone of many stars, is an event that cannot be forgotten when we try to explain observational results as the lithium abundance in the atmosphere of different stars, its dependence on spectral type, age or rotation velocity... During the last years many processes have been proposed as being responsible of this mixing: overshooting, turbulence induced by rotational instabilities, internal waves, etc... We will consider, following the results obtained by Press (1981), the role of this last mechanism in the transport of lithium to the burning level, not as g

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38

Timofeev, Eugene V., Eduard V. Zemtsovsky, and Svetlana V. Reeva. "Cardiac arrhythmias and predictors in patients of young age with marfanoid habitus." Pediatrician (St. Petersburg) 10, no. 2 (2019): 37–46. http://dx.doi.org/10.17816/ped10237-46.

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Cardiac arrhythmias are frequent manifestations of hereditary connective tissue disorders (HCTD). Such HCTD as Marfan syndrome (MS), the primary mitral valve prolapse are characterized by frequent supraventricular and ventricular extrasystoles, prolonged PQ and QT interval, reduced heart rate variability and frequent findings of other predictors of heart arrhythmias. Cardiac arrhythmias as well as their predictors in patients of young age with marfanoid habitus (MH) were not previously evaluated. Materials and methods. A total number of 238 patients of young age were examined. All patien

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Fuchs, Heidi L., and Claudio DiBacco. "Mussel larval responses to turbulence are unaltered by larval age or light conditions." Limnology and Oceanography: Fluids and Environments 1, no. 1 (2011): 120–34. http://dx.doi.org/10.1215/21573698-1444613.

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Konyshev, Valery, and Alexander Sergunin. "Russian-American Scientific Cooperation in the Arctic in the Age of Geopolitical Turbulence." Vestnik Volgogradskogo gosudarstvennogo universiteta. Serija 4. Istorija. Regionovedenie. Mezhdunarodnye otnoshenija, no. 1 (March 2024): 138–44. http://dx.doi.org/10.15688/jvolsu4.2024.1.12.

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Introduction. The article examines cooperation between Russia and the US on Arctic research in the context of the Ukrainian crisis. One of the accompanying tasks is to study the motivations of both sides for continuing such cooperation. Methods and materials. The article uses the so-called liberal intergovernmental approach as a research method, aiming to explain the reasons for cooperation between countries with different socio-political structures and national interests on the world stage. The empirical basis for the study was the documents of international organizations, US and Russian stat

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41

Shaikh, Zubair I., Daniel Verscharen, Ivan Y. Vasko, Bennett A. Maruca, Dibyendu Chakrabarty, and Anil N. Raghav. "Anisotropic Heating and Cooling within Interplanetary Coronal Mass Ejection Sheath Plasma." Astrophysical Journal 974, no. 2 (2024): 249. http://dx.doi.org/10.3847/1538-4357/ad782b.

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Abstract This study presents the first comprehensive investigation of the relationship between heating and cooling, temperature anisotropy, turbulence level, and collisional age within interplanetary coronal mass ejection (ICME) sheaths, which are highly compressed, heated, and turbulent. Using Wind spacecraft data, we analyze 333 ICME sheaths observed at 1 au from 1995 to 2015. The proton temperature within the ICME sheaths has a log-normal probability distribution. Irrespective of instability growth rates, plasma unstable to proton-cyclotron (PC) and firehose instabilities appear to be stati

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Mukund, Vasudevan, and Björn Hof. "The critical point of the transition to turbulence in pipe flow." Journal of Fluid Mechanics 839 (January 25, 2018): 76–94. http://dx.doi.org/10.1017/jfm.2017.923.

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In pipes, turbulence sets in despite the linear stability of the laminar Hagen–Poiseuille flow. The Reynolds number ($Re$) for which turbulence first appears in a given experiment – the ‘natural transition point’ – depends on imperfections of the set-up, or, more precisely, on the magnitude of finite amplitude perturbations. At onset, turbulence typically only occupies a certain fraction of the flow, and this fraction equally is found to differ from experiment to experiment. Despite these findings, Reynolds proposed that after sufficiently long times, flows may settle to steady conditions: bel

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BUDÄ‚CAN, Ioan, and Ioan DEAC. "Numerical Modeling of CFD model Applied to a Hammer Mill." Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca. Agriculture 70, no. 1 (2013): 273–82. http://dx.doi.org/10.15835/buasvmcn-agr:9338.

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A numerical model was used to predict and improve the flow characteristics in a hammer mill. For this purpose a CFD (computational fluid dynamics) model was built. SST and LES turbulence models was tested in order to improve the model. For the simulation of the sieve effect a porous domainÂ was used. The pressure, velocity of fluid and also the turbulence areas were analyzed. The physical properties of the milled particles and the grinding process parameters are greatly affected by the fluid flow in the hammer mill and because of this, by understanding how the fluid flow takes place inside it

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Absi, Rafik, and Hitoshi Tanaka. "Analytical Eddy Viscosity Model for Turbulent Wave Boundary Layers: Application to Suspended Sediment Concentrations over Wave Ripples." Journal of Marine Science and Engineering 11, no. 1 (2023): 226. http://dx.doi.org/10.3390/jmse11010226.

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Turbulence related to flow oscillations near the seabed, in the wave bottom boundary layer (WBBL), is the phenomenon responsible for the suspension and transport of sediments. The vertical distribution of turbulent eddy viscosity within the WBBL is a key parameter that determines the vertical distribution of suspended sediments. For practical coastal engineering applications, the most used method to parameterize turbulence consists in specifying the shape of the one-dimensional-vertical (1DV) profile of eddy viscosity. Different empirical models have been proposed for the vertical variation of

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Lombardini, M., D. I. Pullin, and D. I. Meiron. "Turbulent mixing driven by spherical implosions. Part 2. Turbulence statistics." Journal of Fluid Mechanics 748 (April 28, 2014): 113–42. http://dx.doi.org/10.1017/jfm.2014.163.

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AbstractWe present large-eddy simulations (LES) of turbulent mixing at a perturbed, spherical interface separating two fluids of differing densities and subsequently impacted by a spherically imploding shock wave. This paper focuses on the differences between two fundamental configurations, keeping fixed the initial shock Mach number $\approx $1.2, the density ratio (precisely $|A_0|\approx 0.67$) and the perturbation shape (dominant spherical wavenumber $\ell _0=40$ and amplitude-to-initial radius of 3 %): the incident shock travels from the lighter fluid to the heavy one, or inversely, from

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Malsawmtluangi, C., Neethu Paul, and Shreemayee Panda. "Emotional Turbulence Perceived by Psoriasis Patients." International Journal of Science and Healthcare Research 8, no. 2 (2023): 562–67. http://dx.doi.org/10.52403/ijshr.20230276.

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Background: Psoriasis is a chronic inflammatory immune mediated and incurable skin condition characterized by redness, scaling, and thickening of the skin. It can occur in any age group ranging from toddler to elderly and affect both male and female equally. Treatment differs from person to person according to the severity of the skin. Psoriasis itself causes psychological impact leading to self- isolation and stigma. Aim: The aim of the review is to determine the lived experience of patients with psoriasis facing psychological impact in their life such as self- stigma and social isolation. Me

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SCHWAB, JÖRG OTTO, GERRIT EICHNER, NIKOLAY SHLEVKOV, et al. "Impact of Age and Basic Heart Rate on Heart Rate Turbulence in Healthy Persons." Pacing and Clinical Electrophysiology 28, s1 (2005): S198—S201. http://dx.doi.org/10.1111/j.1540-8159.2005.00042.x.

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Chasin, Steven H. "THE AGE OF TURBULENCE: ADVENTURES IN A NEW WORLD (revised edition) - by Alan Greenspan." Economic Affairs 29, no. 1 (2009): 109–10. http://dx.doi.org/10.1111/j.1468-0270.2009.1884_7.x.

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ALDCROFT, DEREK H. "ESSAYS IN BIBLIOGRAPHY AND CRITICISM. Eastern Europe in an age of turbulence, 1919-1950." Economic History Review 41, no. 4 (1988): 592–602. http://dx.doi.org/10.1111/j.1468-0289.1988.tb00482.x.

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Strumik, M., and W. M. Macek. "Statistical analysis of transfer of fluctuations in solar wind turbulence." Nonlinear Processes in Geophysics 15, no. 4 (2008): 607–13. http://dx.doi.org/10.5194/npg-15-607-2008.

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Abstract. We present results of statistical analysis of the transfer of fluctuations in solar wind turbulence. We investigate the dynamics of the slow solar wind using an approach based on the Markov processes theory and experimental data measured by ACE spacecraft. In particular, we test whether the Chapman-Kolmogorov equation is approximately satisfied for the turbulent cascade. We consider the following cases of transfer of fluctuations: magnetic-to-magnetic, velocity-to-velocity, velocity-to-magnetic, and magnetic-to-velocity. In all these cases, the obtained results confirm local characte

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