Results 81 to 90 of about 1,997,150 (223)
Dynamics of star clusters with tangentially anisotropic velocity distribution
Astronomy & AstrophysicsContext. Recent high-precision observations with HST and Gaia enabled new investigations of the internal kinematics of star clusters (SCs) and the dependence of kinematic properties on the stellar mass. These studies raised new questions about the dynamical evolution of self-gravitating stellar systems. Aims.
Václav Pavlík +3 more
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Tangential Velocity Estimation Using Near-Field Automotive Radar Model
This work investigates the problem of tangential velocity estimation in automotive radar systems, addressing the limitations of conventionally considered models. Conventional automotive radars are usually based on far-field models and estimate the target's range, radial velocity, and direction-of-arrival (DOA) but are not able to estimate the ...
Shifrin, Michael +2 more
openaire +2 more sources
Numerical modelling the three-dimensional velocity field in the cyclone (rus) [PDF]
Инженерно-строительный журнал, 2011 The urgency of work is determined by the importance of developing methods for calculating cyclones and improving their design, due to popular usage cyclones for air cleaning.
Strelets K.I., A.A. Girgidov, Vatin N.I.
doaj
Analytical derivation of the radial distribution function in spherical dark matter halos
, 2017 The velocity distribution of dark matter near the Earth is important for an accurate analysis of the signals in terrestrial detectors. This distribution is typically extracted from numerical simulations.
Eilersen, Andreas +2 more
core +1 more source
International Journal of Advanced Robotic Systems, 2018 This article presents a non-collision trajectory planning algorithm in three-dimensional space based on velocity potential field for robotic manipulators, which can be applied to collision avoidance among serial industrial robots and obstacles, and path ...
X Xu, Y Hu, JM Zhai, LZ Li, PS Guo
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Well-posedness of The Prandtl Equation in Sobolev Spaces
, 2012 We develop a new approach to study the well-posedness theory of the Prandtl equation in Sobolev spaces by using a direct energy method under a monotonicity condition on the tangential velocity field instead of using the Crocco transformation.
Alexandre, Radjesvarane +3 more
core +1 more source
, 2009 We present a kinematic analysis of the globular cluster(GC) system in the giant elliptical galaxy (gE) NGC 4636 in the Virgo cluster. Using the photometric and spectroscopic database of 238 GCs, we have investigated the kinematics of the GC system.
Arimoto +57 more
core +1 more source
Sensibility Study of the Reynolds Stress Model Parameters for Swirling Flows in Cyclones
Chemical Engineering Transactions, 2015 Several studies found in the literature apply Computational Fluid Dynamics (CFD) for the swirling flow in cyclones, such as Costa et al. (2013) who studied solid-solid interactions, and Sgrott Jr. et al. (2013) that investigated a technique for cyclones’
E. Balestrin +4 more
doaj +1 more source
Coefficient of tangential restitution for the linear dashpot model
, 2007 The linear dashpot model for the inelastic normal force between colliding spheres leads to a constant coefficient of normal restitution, $\epsilon_n=$const., which makes this model very popular for the investigation of dilute and moderately dense ...
L. S. Tsimring +6 more
core +1 more source
Effects of spoilers and gear on B-747 wake vortex velocities [PDF]
Vortex velocities were measured in the wakes of four configurations of a 0.61-m span model of a B-747 aircraft. The wakes were generated by towing the model underwater in a ship model basin.
Bradfute, J. G. +2 more
core +1 more source