Results 31 to 40 of about 122,909 (277)
Stationary wave patterns generated by an impurity moving with supersonic velocity through a Bose-Einstein condensate [PDF]
, 2009 Formation of stationary 3D wave patterns generated by a small point-like impurity moving through a Bose-Einstein condensate with supersonic velocity is studied. Asymptotic formulae for a stationary far-field density distribution are obtained.
A. M. Kamchatnov +9 more
core +3 more sources
Jixie chuandong, 2020 In order to improve the safety and accuracy of the manipulator in dynamic obstacle avoidance，an artificial potential field collision avoidance algorithm based on velocity field is proposed.Firstly，the attracted velocity field is established to obtain the
Shi Yafei +3 more
doaj
A local grid refinement technique based upon Richardson extrapolation [PDF]
, 1997 A grid-embedding technique for the solution of two-dimensional incompressible flows governed by the Navier-Stokes equations is presented. A single coarse grid covers the whole domain, and local grid refinement B carried out in the regions of high ...
Bai +31 more
core +1 more source
Inverse Problems, 2021 Abstract We present a penalization parameter method for obstacle identification in an incompressible fluid flow for a modified version of the Oseen equations. The proposed method consists in adding a high resistance potential to the system such that some subset of its boundary support represents the obstacle.
Jorge Aguayo +2 more
openaire +3 more sources
Three-Dimensional Flight Conflict Detection and Resolution Based on Particle Swarm Optimization
Aerospace, 2023 This paper presents a conflict detection and resolution method based on a velocity obstacle method for flight conflicts in a three-dimensional space. With the location and speed information of the two aircraft, the optimal relief strategy is obtained ...
Weijun Pan +3 more
doaj +1 more source
Particle Swarm Optimization Based Source Seeking [PDF]
, 2015 Signal source seeking using autonomous vehicles is a complex problem. The complexity increases manifold when signal intensities captured by physical sensors onboard are noisy and unreliable.
Bhattacharya, Sourabh +6 more
core +5 more sources
Unmanned Aerial Vehicle Obstacle Avoidance Based Custom Elliptic Domain
DronesThe velocity obstacles (VO) method is widely employed in real-time obstacle avoidance research for UAVs due to its succinct mathematical foundation and rapid, dynamic planning abilities.
Yong Liao +3 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.Phase‐field simulations coupled with dislocation‐density‐based crystal plasticity modeling reproduce γ′ rafting behavior in single‐crystal Ni‐based superalloys under varied loading conditions. The model captures both macroscopic creep and microscopic morphology evolution, with results matching high‐temperature creep experiments.
Micheal Younan +5 more
wiley +1 more source
Phase Field Failure Modeling: Brittle‐Ductile Dual‐Phase Microstructures under Compressive Loading
Advanced Engineering Materials, EarlyView.The approach by Amor and the approach by Miehe and Zhang for asymmetric damage behavior in the phase field method for fracture are compared regarding their fitness for microcrack‐based failure modeling. The comparison is performed for the case of a dual‐phase microstructure with a brittle and a ductile constituent.
Jakob Huber, Jan Torgersen, Ewald Werner
wiley +1 more source
Critical velocity of a finite-temperature Bose gas
, 2016 We use classical field simulations of the homogeneous Bose gas to study the breakdown of superflow due to vortex nucleation past a cylindrical obstacle at finite temperature.
Barenghi, C. F. +3 more
core +1 more source