Categories
- All solutions
- ALE / Parameterized Geometry (1)
- Boundary Conditions (9)
- Chemical Engineering (4)
- Documentation (3)
- Drawing (3)
- Electromagnetics (13)
- Error Messages (19)
- Export (3)
- Fluid Dynamics (2)
- Geometry (8)
- Import (5)
- Installation (22)
- Mesh (9)
- Multiphysics (3)
- PDEs, ODEs, and other equations (16)
- Postprocessing (14)
- Product Information (11)
- Solver (16)
- Structural Mechanics (1)
- User Models (1)
Solutions - PDEs, ODEs, and other equations
- 1019: Can I solve systems of nonlinear algebraic equations with COMSOL?
Can I solve nonlinear equation systems with COMSOL?
- 1007: Solving Algebraic and Transcendental Equations
How can I solve algebraic equations and transcendental equations in COMSOL?
- 973: My flux calculation seems wrong
I am solving a diffusion-like problem in COMSOL Multiphysics and discovered that boundaries that are defined with insulation/symmetry conditions have an integrated value of the normal component of the flux that is far...
- 965: 3D Euler Beam coordinate system
- 955: Optimization
Can I do optimization in a COMSOL Multiphysics model?
- 952: Negative concentrations
Why do I get negative values of the concentration?
- 945: Imposing both Neumann and Dirichlet condition on a single boundary
I would like to solve the equation div(grad u) = 0 in 1D with the following boundary conditions: x = 0: u = 2 AND du/dx = 3 x = 1: no conditions imposed
- 942: How do I use coupling variables from the command line?
How do I use coupling variables from the command line, for example to make periodic boundary conditions or impose an integral constraint in a script file?
- 939: Can COMSOL Multiphysics handle polar, spherical, and cylindrical coordinates? And how is this done?
Can COMSOL Multiphysics handle polar, spherical, and cylindrical coordinates? And how can I define these coordinates?
- 913: Computing Time and Space Integrals
How do I compute time integrals in my time-dependent COMSOL Multiphysics model? How can I calculate a space integral?
- 905: Smoothed step transitions in COMSOL Multiphysics
- 895: Can COMSOL Multiphysics handle left-handed materials?
Can COMSOL Multiphysics handle left-handed materials?
- 875: What is meant by degrees of freedom (DOFs) in COMSOL Multiphysics?
What is meant by degrees of freedom (DOFs) in COMSOL Multiphysics?
- 852: How can I model nonlinear magnetic materials?
How can I model nonlinear magnetic materials? How can I introduce an experimental B-H curve?
- 816: How do I solve a PDE with space derivatives of order higher than two?
How do I solve a PDE with space derivatives of order higher than two? For example, the equation uxxxx + uxxyy + uyyyy = f for a function u(x,y).
- 808: Can I compute the magnetic forces in COMSOL Multiphysics?
Can I compute the magnetic forces in COMSOL Multiphysics?