Relevant bibliographies by topics / Eulerian perturbation theory

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  1. Journal articles
  2. Dissertations / Theses
  3. Conference papers

Academic literature on the topic 'Eulerian perturbation theory'

Author: Grafiati
Published: 14 March 2023

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Journal articles on the topic "Eulerian perturbation theory"

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Almeida, Juan P. Beltrán, Josué Motoa-Manzano, Jorge Noreña, Thiago S. Pereira, and César A. Valenzuela-Toledo. "Structure formation in an anisotropic universe: Eulerian perturbation theory." Journal of Cosmology and Astroparticle Physics 2022, no. 02 (2022): 018. http://dx.doi.org/10.1088/1475-7516/2022/02/018.

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Abstract We present an effective Eulerian description, in the non-relativistic regime, of the growth of cosmological perturbations around a homogeneous but anisotropic Bianchi I spacetime background. We assume a small deviation from isotropy, sourced at late times for example by dark energy anisotropic stress. We thus derive an analytic solution for the linear dark matter density contrast, and use it in a formal perturbative approach which allows us to derive a second order (non-linear) solution. As an application of the procedure followed here we derive analytic expressions for the power spec
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Aviles, Alejandro, Arka Banerjee, Gustavo Niz, and Zachary Slepian. "Clustering in massive neutrino cosmologies via Eulerian Perturbation Theory." Journal of Cosmology and Astroparticle Physics 2021, no. 11 (2021): 028. http://dx.doi.org/10.1088/1475-7516/2021/11/028.

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Abstract We introduce an Eulerian Perturbation Theory to study the clustering of tracers for cosmologies in the presence of massive neutrinos. Our approach is based on mapping recently-obtained Lagrangian Perturbation Theory results to the Eulerian framework. We add Effective Field Theory counterterms, IR-resummations and a biasing scheme to compute the one-loop redshift-space power spectrum. To assess our predictions, we compare the power spectrum multipoles against synthetic halo catalogues from the QUIJOTE simulations, finding excellent agreement on scales k ≲ 0.25 h Mpc-1. One can obtain t
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Kozlikin, Elena, Robert Lilow, Felix Fabis, and Matthias Bartelmann. "A first comparison of Kinetic Field Theory with Eulerian Standard Perturbation Theory." Journal of Cosmology and Astroparticle Physics 2021, no. 06 (2021): 035. http://dx.doi.org/10.1088/1475-7516/2021/06/035.

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NANDY, MALAY K., and JAYANTA K. BHATTACHARJEE. "MODE-COUPLING THEORY, DYNAMIC SCALING, AND TWO-DIMENSIONAL TURBULENCE." International Journal of Modern Physics B 09, no. 09 (1995): 1081–97. http://dx.doi.org/10.1142/s0217979295000446.

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A self-consistent mode-coupling scheme, along with dynamic scaling ideas, is used to obtain a renormalized perturbation theory in the Eulerian framework from Wyld’s perturbation theory of the forced Navier-Stokes equation. For the force-correlation behaving as k−(d−4+y), the Kolmogorov and Kraichnan-Batchelor scaling spectra of two-dimensional turbulence for the inverse energy cascade, [Formula: see text] and the direct entropy cascade, [Formula: see text], are obtained for y=4 and y=6 respectively, including the logarithmic correction for the latter. Unlike the usual Eulerian formulations (e.
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Roth, Nina, and Cristiano Porciani. "Testing standard perturbation theory and the Eulerian local biasing scheme against N-body simulations." Monthly Notices of the Royal Astronomical Society 415, no. 1 (2011): 829–44. http://dx.doi.org/10.1111/j.1365-2966.2011.18768.x.

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Roycroft, R., J. P. Sauppe, and P. A. Bradley. "Double cylinder target design for study of hydrodynamic instabilities in multi-shell ICF." Physics of Plasmas 29, no. 3 (2022): 032704. http://dx.doi.org/10.1063/5.0083190.

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Cylindrical implosions are used to study hydrodynamic instability growth for inertial confinement fusion (ICF) applications, as the cylindrical geometry allows for easier diagnostic access while retaining convergence effects. In this work, we use the established cylindrical implosion platform [Palaniyappan et al., Phys. Plasmas 27, 042708 (2020)] to inform the double shell ICF campaign [Montgomery et al., Phys. Plasmas 25, 092706 (2018)]. We present a design for a double cylindrical target as an analogue to the double shell ICF capsule in order to study hydrodynamic instability growth on the h
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Arico', Giovanni, Raul Angulo, and Matteo Zennaro. "Accelerating Large-Scale-Structure data analyses by emulating Boltzmann solvers and Lagrangian Perturbation Theory." Open Research Europe 1 (June 15, 2022): 152. http://dx.doi.org/10.12688/openreseurope.14310.2.

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The linear matter power spectrum is an essential ingredient in all theoretical models for interpreting large-scale-structure observables. Although Boltzmann codes such as CLASS or CAMB are very efficient at computing the linear spectrum, the analysis of data usually requires 104-106 evaluations, which means this task can be the most computationally expensive aspect of data analysis. Here, we address this problem by building a neural network emulator that provides the linear theory (total and cold) matter power spectrum in about one millisecond with ≈0.2%(0.5%) accuracy over redshifts z ≤ 3 (z
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Arico', Giovanni, Raul Angulo, and Matteo Zennaro. "Accelerating Large-Scale-Structure data analyses by emulating Boltzmann solvers and Lagrangian Perturbation Theory." Open Research Europe 1 (December 16, 2021): 152. http://dx.doi.org/10.12688/openreseurope.14310.1.

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The linear matter power spectrum is an essential ingredient in all theoretical models for interpreting large-scale-structure observables. Although Boltzmann codes such as CLASS or CAMB are very efficient at computing the linear spectrum, the analysis of data usually requires 104-106 evaluations, which means this task can be the most computationally expensive aspect of data analysis. Here, we address this problem by building a neural network emulator that provides the linear theory (total and cold) matter power spectrum in about one millisecond with ≈0.2%(0.5%) accuracy over redshifts z ≤ 3 (z
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Larsson, Jonas. "A new Hamiltonian formulation for fluids and plasmas. Part 1. The perfect fluid." Journal of Plasma Physics 55, no. 2 (1996): 235–59. http://dx.doi.org/10.1017/s002237780001881x.

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A new formulation of the Hamiltonian structure underlying the perfect fluid equations is presented. Besides time, a parameter c is also used. Correspondingly, there are two interdependent systems of equations expressing time evolution and e evolution respectively. The accessibility equations define the e dynamics and give the variation in the usual Eulerian fluid variables as determined by the generating functions. The time evolutions of both the Eulerian fluid variables and the generating functions are obtained from an action principle. The consistency of the e and the time dynamics is crucia
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ZHAO, MING, and MOHAMED S. GHIDAOUI. "TRANSIENT DYNAMICS OF STREAK AND LONGITUDINAL VORTICES IN SHEAR FLOW WITH WAVE." International Journal of Modern Physics: Conference Series 19 (January 2012): 139–53. http://dx.doi.org/10.1142/s2010194512008689.

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Langmuir circulations are alternating right and left helical vortices in the ocean having horizontal axes parallel to the wind. They are manifested by floating material on the ocean surface as streaks. The laboratory wind driven shear flow demonstrate streak feature with/without wave condition. When the wave is present the explanation of results with Craik-Leibovich instability mechanism, originally proposed for weak current shear in ocean, is not appropriate for some problem as in the laboratory the current shear is strong. The existing normal mode analysis based on the generalized Lagrangian
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Dissertations / Theses on the topic "Eulerian perturbation theory"

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Taffoni, Giuliano. "Formation and Evolution of Dark Matter Haloes in Hierarchical Models for Structure Formation." Doctoral thesis, SISSA, 2002. http://hdl.handle.net/20.500.11767/4286.

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The layout of this thesis is the following. In Chapter 2, I introduce some basic elements of modem cosmology and devote special attention to recent observational constraints on cosmological parameters. I also review the theory of gravitational instability, paying particular attention to the theory of collapse of the initial density perturbations. Chapter 3 deals with the issue of hierarchical clustering. I present a Monte Carlo code to generate catalogues of haloes based on the EPS formalism, and then compare its results with numerical simulations. In Chapters 4, 5, and 6 PINOCCHIO code is pre
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Conference papers on the topic "Eulerian perturbation theory"

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Fouques, Sébastien, and Csaba Pákozdi. "A Numerical Investigation of Steep Irregular Wave Properties With a Mixed-Eulerian Lagrangian HOS Method." In ASME 2020 39th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/omae2020-18216.

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Abstract The design of structures at sea requires knowledge on how large and steep waves can be. Although extreme waves are very rare, their consequences in terms of structural loads, such as wave impact or ringing, are critical. However, modelling the physical properties of steep waves along with their probability of occurrence in given sea states has remained a challenge. On the one hand, standard linear and weakly nonlinear wave theories are computationally efficient, but since they assume that the steepness parameter is small, they are unable to capture extreme waves. On the other hand, re
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El Bouzidi, Salim, Marwan Hassan, Lais L. Fernandes, and Atef Mohany. "Numerical Characterization of the Area Perturbation and Timelag for a Vibrating Tube Subjected to Cross-Flow." In ASME 2014 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/pvp2014-28452.

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Fluidelastic instability can have disastrous effects on the integrity of steam generators. Over the last five decades there has been a great deal of research done in an attempt to understand this phenomenon. These efforts have resulted in several theoretical models and design guidelines. The semi-analytical model of fluidelastic instability initially developed by Lever and Weaver is based on a single tube in a channel flow. The mechanism responsible for instability was found to be one of flow redistribution. While previous studies have been able to characterize the pressure and velocity within
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Rollin, Bertrand, Frederick Ouellet, Bradford Durant, Rahul Babu Koneru, and S. Balachandar. "Shock-Induced Multiphase Instability in a High Volume Fraction Finite-Thickness Particle Layer." In ASME 2021 Fluids Engineering Division Summer Meeting. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/fedsm2021-65446.

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Abstract We study the interaction of a planar air shock with a perturbed, monodispersed, particle curtain using point-particle simulations. In this Eulerian-Lagrangian approach, equations of motion are solved to track the position, momentum, and energy of the computational particles while the carrier fluid flow is computed in the Eulerian frame of reference. In contrast with many Shock-Driven Multiphase Instability (SDMI) studies, we investigate a configuration with an initially high particle volume fraction, which produces a strongly two-way coupled flow in the early moments following the sho
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