Results 1 to 10 of about 116,428 (235)
Decay of streaks and rolls in plane Couette–Poiseuille flow [PDF]
Journal of Fluid Mechanics, 2021 We report the results of an experimental investigation into the decay of turbulence in plane Couette–Poiseuille flow using ‘quench’ experiments where the flow laminarises after a sudden reduction in Reynolds number $Re$ . Specifically, we study the velocity field in the streamwise–spanwise plane.
T. Liu +5 more
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Rolling tachyons and decaying branes [PDF]
Journal of High Energy Physics, 2003 We present new rolling tachyon solutions describing the classical decay of D-branes. Our methods are simpler than those appearing in recent works, yet our results are exact in classical string theory. The role of pressure in the decay is studied using tachyon profiles with spatial variation. In this case the final state involves an array of codimension
Larsen, Finn +2 more
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Verification and validation of numerical modelling of DTMB 5415 roll decay [PDF]
Ocean Engineering, 2018 The paper presents a numerical roll damping assessment of the intact DTMB 5415 naval ship at zero speed. Free model motions from four experimental roll decays with initial heeling angle of 4.0, 13.5, 19.58 and 24.50 deg, performed previously at the University of Strathclyde, Glasgow, have been analysed and the one with 19.58 deg initial heeling has ...
Mancini, Simone +3 more
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Unitarity meets channel-duality for rolling/decaying D-branes [PDF]
Journal of High Energy Physics, 2006 Investigations for decay of unstable D-brane and rolling of accelerated D-brane dynamics have revealed that various proposed prescriptions give different result for spectral amplitudes and observables. Here, we study them with particular attention to unitarity and open-closed channel duality. From "ab initio" derivation in the open string channel, both
Soo-Jong Rey, Yu Nakayama, Yuji Sugawara
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Particle decay during inflation: Self-decay of inflaton quantum fluctuations during slow roll [PDF]
Physical Review D, 2005 Particle decay during inflation is studied by implementing a dynamical renormalization group resummation combined with a small Delta expansion. Delta measures the deviation from the scale invariant power spectrum and regulates the infrared. In slow roll inflation, Delta is a simple function of the slow roll parameters epsilon_V, eta_V.We find that ...
Daniel Boyanovsky +6 more
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On rolling, tunneling and decaying in some large N vector models [PDF]
Journal of High Energy Physics, 2009 Various aspects of time-dependent processes are studied within the large N approximation of O(N) vector models in three dimensions. These include the rolling of fields, the tunneling and decay of vacua. We present an exact solution for the quantum conformal case and find a solution for more general potentials when the total change of the value of the ...
Vadim Asnin +2 more
openaire +3 more sources
URANSE-Based Numerical Prediction for the Free Roll Decay of the DTMB Ship Model [PDF]
Journal of Marine Science and Engineering, 2021 In the present study, Computational Fluid Dynamics (CFD) is used to investigate the roll decay of the benchmark surface combatant DTMB-5512 ship model appended with bilge keels, sailing in calm water at different speeds (Fr = 0.0, 0.138, 0.2, 0.28 and 0.41) and with different initial roll angles.
Bekhit, Adham, Popescu, Florin
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Mechanistic driving force for martensite decay in rolling contact fatigue
Tribology International, 2023 Martensite decay due to large scale microstructural alterations is the main fatigue process which occurs during extensive rolling contact fatigue in bearing applications. Despite its practical and scientific importance, the full description of the controlling phenomena is still incomplete.
Predrag Andric +4 more
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Frequency-Domain Analysis of Linear Time-Periodic Systems [PDF]
, 2004 In this paper, we study convergence of truncated representations of the frequency-response operator of a linear time-periodic system. The frequency-response operator is frequently called the harmonic transfer function. We introduce the concepts of input,
Bernhardsson, Bo +2 more
core +1 more source
Power-Law Behavior of Power Spectra in Low Prandtl Number Rayleigh-Benard Convection [PDF]
, 2001 The origin of the power-law decay measured in the power spectra of low Prandtl number Rayleigh-Benard convection near the onset of chaos is addressed using long time numerical simulations of the three-dimensional Boussinesq equations in cylindrical ...
A. Libchaber +20 more
core +3 more sources