What is direct sparse solver?
What is direct sparse solver?
The direct solver, Direct Sparse, solves the set of equations directly without any approximations and hence there are no errors associated with the solution process. There will still be discretization errors which are present both in iterative or direct solvers.
What solver does solidworks simulation use?
SOLIDWORKS flow simulation solves studies using the Navier Stokes equations which are outlined below.
What is the solver used in Ansys?
The original solver used in ANSYS is the frontal solver, a direct Cholesky factorization algorithm [5, 6]. This direct factorization method was designed for computers with very limited memory but remained an efficient direct method for many years.
What is sparse solver solidworks?
The Intel Direct Sparse solver can handle linear static and nonlinear studies with more than 4 million equations. The image shows the total solution time in minutes for a linear static analysis of a large model solved with the FFEPlus Iterative solver.
What is iterative solver?
In contrast to the direct solver, the iterative solver starts by assuming an approximate solution for the unknowns {u}. The solution is iterated upon to reach an “exact” solution.
What is FFEPlus?
FFEPlus is an iterative solver that uses implicit integration methods. Each iteration the solution is assumed and errors are evaluated. Iteration continues until errors are small enough. Thus, in general, if the study contains more than 100,000 DOF, it is more efficient and more accurate to use FFEPlus.
Does solidworks simulation use multiple cores?
SOLIDWORKS Simulation and Flow Simulation do take advantage of multiple CPUs and cores. However don’t expect doubling the number of cores will cut your solution time in half. Certain operations are inherently linear and therefore cannot take advantage of multiple cores.
What is a solver in Simulation?
A solver applies a numerical method to solve the set of ordinary differential equations that represent the model. Through this computation, it determines the time of the next simulation step. In the process of solving this initial value problem, the solver also satisfies the accuracy requirements that you specify.
How does FEA solver work?
what is an FEA solver? Well, basically, every FEA software is composed of 3 parts the Pre, the Post and the solver. The job of the solver is to take these input data, to process them using specific algorithms (I will detail that a bit later) and to give an output that correspond to the result of the analysis.
What is mumps in Comsol?
MUMPS (MUltifrontal Massively Parallel sparse direct Solver) is a software application for the solution of large sparse systems of linear algebraic equations on distributed memory parallel computers.
What does the message out of core solution mean during a solidworks simulation analysis run?
If you initially select the Direct Sparse solver and due to limited memory resources it has reached an out-of-core solution, a warning message alerts you to switch to the Large Problem Direct Sparse.
What is large displacement solidworks?
The large displacement solution assumes that the stiffness changes during loading so it applies the load in steps and updates the stiffness for each solution step. When Large displacement is selected in the Static dialog box, the static study is solved by stepping the load and updating the geometry.
