Results 41 to 50 of about 142,166 (292)
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
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Influence of obstacles in coal mine roadways on smoke flow characteristics
Gong-kuang zidonghuaUnderground coal mine fires generate smoke that spreads along roadways, and its flow state is easily affected by internal obstacles, forming local smoke stagnation zones, increasing the accumulation risk of toxic gases, and seriously threatening the safe
WANG Binbin, QIU Haisheng, ZHOU Rui
doaj +1 more source
Quantitative stability of the free boundary in the obstacle problem
, 2017 We prove some detailed quantitative stability results for the contact set and the solution of the classical obstacle problem in $\mathbb{R}^n$ ($n \ge 2$) under perturbations of the obstacle function, which is also equivalent to studying the variation of
Serfaty, Sylvia, Serra, Joaquim
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Phase space structures generated by an absorbing obstacle in a streaming plasma [PDF]
, 2004 The dynamic behavior of an ion flow around an obstacle in a collisionless plasma is investigated. The obstacle consists here of an absorbing cylinder, and a 2 dimensional electrostatic particle-in-cell simulation is used to study the flow characteristics.
Guio, P, Pecseli, HL
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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
On the analogy between streamlined magnetic and solid obstacles
, 2009 Analogies are elaborated in the qualitative description of two systems: the magnetohydrodynamic (MHD) flow moving through a region where an external local magnetic field (magnetic obstacle) is applied, and the ordinary hydrodynamic flow around a solid ...
Cuevas S. +11 more
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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
Journal of Marine Science and EngineeringThe growing adoption of Unmanned Surface Vessels (USVs) in commercial and defense domains raises challenges for safe navigation and strict adherence to the International Regulations for Preventing Collisions at Sea (COLREGs).
Douglas Silva de Lima +2 more
doaj +1 more source
Novel Method of Obstacle Avoidance Planning for Redundant Sliding Manipulators
IEEE Access, 2020 In this paper, a weighted additional deviation velocity on the basis of the gradient projection (GP-WADV) method is proposed to solve obstacle avoidance problems of the redundant manipulator under the condition of known end-effector trajectory.
Jinguo Liu +3 more
doaj +1 more source
Critical Velocity of Superfluid Flow past Large Obstacles in Bose-Condensates
, 2000 By considering the stability of potential flow of a superfluid around large obstacles of size R, we derive an analytical result for the critical velocity which is of order v_c \sim \hbar / mR, scaling inversely with obstacle size, in contrast to what is ...
Stiessberger, J. S., Zwerger, W.
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