This paper studies the application of two-level Schwarz algorithms to several models of computational fluid dynamics. The purpose is to build an algorithm suitable for elliptic and convective models. The subdomain approximated solution relies on the incomplete lower-upper factorization. The algebraic coupling between the coarse grid and the Schwarz preconditioner is discussed. The deflation met...

In this paper, a positioning task that includes translation and rotation is investigated and experimental results of three movement processes (i.e., initial feedforward movement (IFFM), coarse error-corrective feedback movement (coarse EFBM), and fine error-corrective feedback movement (fine EFBM)) are reported for translation and rotation, and for spatially-coupled style and spatially-decouple...

Agglomeration multigrid, which has been demonstrated as an efficient and automatic technique for the solution of the Euler equations on unstructured meshes, is extended to viscous turbulent flows. For diffusion terms, coarse grid discretizations are not possible, and more accurate grid transfer operators are required as well. A Galerkin coarse grid operator construction and an implicit prolonga...

Tactile roughness magnitude estimates increase with contact force. However, it is not known whether discrimination thresholds are affected by contact force and other parameters, such as duration and tangential movement. The effects of these factors on roughness discrimination thresholds were determined using an adaptive staircase procedure for coarse and fine texture discrimination during activ...

We investigate mortar multiscale numerical methods for coupled Stokes and Darcy flows with the Beavers–Joseph–Saffman interface condition. The domain is decomposed into a series of subdomains (coarse grid) of either Stokes or Darcy type. The subdomains are discretized by appropriate Stokes or Darcy finite elements. The solution is resolved locally (in each coarse element) on a fine scale, allow...

For organisms that fly or swim, movement results from the combined effects of the moving medium - air or water - and the organism's own locomotion. For larger organisms, propulsion contributes significantly to progress but the flow usually still provides significant opposition or assistance, or produces lateral displacement ('drift'). Animals show a range of responses to flows, depending on the...