Search found 3 matches

by josie
07 Jan 2022, 14:24
Forum: Software development
Topic: Custom / Composite Matrix Assembly
Replies: 1
Views: 2869

Custom / Composite Matrix Assembly

Hi! I'm a bit stuck on a programming task. I would like to solve a system Ax=b using Elmer, where A = B+C*D, where B and C can be assembled as finite element matrices, but D is a dense matrix. It is not really a problem to write routines to assemble each of the individual matrices, but I am stuck on...
by josie
31 Jan 2020, 19:49
Forum: ElmerSolver
Topic: Reynolds Module: Iterating Elmer solvers and integral calculation
Replies: 3
Views: 2208

Re: Reynolds Module: Iterating Elmer solvers and integral calculation

Hi, Sorry for the lacking clarity -- I have attached a reference that explains the method (see eqns 3 and 20). The missing background is that we have a 2D, rectangular computational domain with an approximately elliptical region of higher pressure centered around (0,0) with half-axes of the ellipse ...
by josie
31 Jan 2020, 17:01
Forum: ElmerSolver
Topic: Reynolds Module: Iterating Elmer solvers and integral calculation
Replies: 3
Views: 2208

Reynolds Module: Iterating Elmer solvers and integral calculation

Hello Elmer users, I am fairly new to Elmer and am working with the Reynolds module for thin films. A relatively common approach taken to avoid coupling the Reynolds equation with 3D elastic deformation is the half-space approximation, which involves an integral formula for the film height ("Ga...