Results 41 to 50 of about 19,826 (256)
Numerical modeling of droplet trajectories and collection efficiency using the Lagrangian approach
Tạp chí Khoa học và Công nghệThe paper presents a numerical method for investigating the motion of supercooled water droplets in airflow using the Lagrangian approach. The method is employed to compute droplet trajectories and capture efficiency on solid surfaces under two-phase ...
Duong De Tai
doaj +1 more source
Spectral-clustering approach to Lagrangian vortex detection [PDF]
Physical Review E, 2016 One of the ubiquitous features of real-life turbulent flows is the existence and persistence of coherent vortices. Here we show that such coherent vortices can be extracted as clusters of Lagrangian trajectories. We carry out the clustering on a weighted graph, with the weights measuring pairwise distances of fluid trajectories in the extended phase ...
Hadjighasem A +3 more
openaire +4 more sources
An Augmented Lagrangian‐Based Approach to the Oseen Problem [PDF]
SIAM Journal on Scientific Computing, 2006 We describe an effective solver for the discrete Oseen problem based on an augmented Lagrangian formulation of the corresponding saddle point system. The proposed method is a block triangular preconditioner used with a Krylov subspace iteration like BiCGStab.
Michele Benzi, Maxim A. Olshanskii
openaire +1 more source
Comparison of Different Approaches to Construct First Integrals for Ordinary Differential Equations
Abstract and Applied Analysis, 2014 Different approaches to construct first integrals for ordinary differential equations and systems of ordinary differential equations are studied here. These approaches can be grouped into three categories: direct methods, Lagrangian or partial Lagrangian
Rehana Naz +2 more
doaj +1 more source
Geometric Approaches to Lagrangian Averaging
Annual Review of Fluid MechanicsLagrangian averaging theories, most notably the generalized Lagrangian mean (GLM) theory of Andrews and McIntyre, have been primarily developed in Euclidean space and Cartesian coordinates. We reinterpret these theories using a geometric, coordinate-free formulation. This gives central roles to the flow map, its decomposition into mean and perturbation
Gilbert, AD, Vanneste, J
openaire +4 more sources
A lagrangian dual approach to the single source localization problem [PDF]
, 2013 The single-source localization problem (SSLP), which is nonconvex by its nature, appears in several important multidisciplinary fields such as signal processing and the global positioning system.
Qi, Hou-Duo +3 more
core +1 more source
Advanced Robotics Research, EarlyView.A codesign multiobjective optimization framework was developed to enhance the morphology and controller of a snake‐like robot driven by artificial muscles. It improved planar locomotion, agility, and power efficiency. The approach optimized link geometry and controller gains, revealing that shorter muscles near joints and longer linkages maximize ...
Ayla Valles, Mahdi Haghshenas‐Jaryani
wiley +1 more source
A Discrete Approach to Meshless Lagrangian Solid Modeling
Computation, 2017 The author demonstrates a stable Lagrangian solid modeling method, tracking the interactions of solid mass particles rather than using a meshed grid. This numerical method avoids the problem of tensile instability often seen with smooth particle applied ...
Matthew Marko
doaj +1 more source
Lagrangian Approach to Sheaves of Vertex Algebras [PDF]
Communications in Mathematical Physics, 2008 We explain how sheaves of vertex algebras are related to mathematical structures encoded by a class of Lagrangians. The exposition is focused on two examples: the WZW model and the (1,1)-supersymmetric $σ$-model. We conclude by showing how to construct a family of vertex algebras with base the Barannikov-Kontsevich moduli space.
openaire +4 more sources
Lagrangian structures and multidimensional consistency [PDF]
, 2010 The conventional point of view is that the Lagrangian is a scalar object (or equivalently a volume form), which through the Euler-Lagrange equations provides us with one single equation (i.e., one per component of the dependent variable ...
Lobb, Sarah Beverley
core