## What are the solvers in OpenFOAM?

The current list of solvers distributed with OpenFOAM is given in the following Sections.

- 1 ‘Basic’ CFD codes. laplacianFoam.
- 2 Incompressible flow.
- 3 Compressible flow.
- 4 Multiphase flow.
- 5 Direct numerical simulation (DNS)
- 6 Combustion.
- 7 Heat transfer and buoyancy-driven flows.
- 8 Particle-tracking flows.

**Which of the following solvers in OpenFOAM can be used for solving laminar flow of fluids select one?**

A. 1 Standard solvers

icoFoam | Transient solver for incompressible, laminar flow of Newtonian fluids |

nonNewtonianIcoFoam | Transient solver for incompressible, laminar flow of non-Newtonian fluids |

pimpleFoam | Transient solver for incompressible, turbulent flow of Newtonian fluids on a moving mesh |

**What is smooth solver in OpenFOAM?**

Smoother is another name for sparse linear solver like Jacobi, Gauss Seidel and all. It is called smoother because we do not use this to solve the linear system but rather quickly remove some part of error. Other than Jacobi, openfoam also uses ILU based smoother. keepfit, minh khang, tonnykz and 1 others like this.

### What is pimpleFoam?

pimpleFoam is large time-step transient solver for incompressible, flow using the PIMPLE(merged PISO-SIMPLE) algorithm. pisoFoam is transient solver for incompressible flow. Turbulence modelling is generic, i.e. laminar, RAS or LES may be selected.

**What is a transient solver?**

The transient solver (trs) solves for instant-of-time variables with. using randomization (also known as uniformization). It calculates the mean and variance of each performability variable for the time points defined for the reward variable within the reward model.

**What kind of boundary patch does empty keyword represent?**

One cyclic patch is linked to another through a neighbourPatch keyword in the boundary file….4.2. 2 Base types.

Selection Key | Description |
---|---|

patch | generic patch |

symmetryPlane | plane of symmetry |

empty | front and back planes of a 2D geometry |

#### What is Solver CFD?

What is CFD? Computational Fluid Dynamics (CFD) is the analysis of fluid flows using numerical solution methods. Sophisticated CFD solvers transform these laws into algebraical equations and are able to efficiently solve these equations numerically.

**What is GAMG in OpenFOAM?**

1.2 Preconditioned conjugate gradient solvers. diagonal: diagonal preconditioning. GAMG: geometric-algebraic multi-grid.

**What is fvOptions in OpenFOAM?**

fvOptions is a flexible framework in OpenFOAM® that allows users to add source terms to equations at run time [1]. fvOptions is easy to use since users do not have to modify source code.

## Is OpenFOAM free?

OpenFOAM is the free, open source CFD software developed primarily by OpenCFD Ltd since 2004. It has a large user base across most areas of engineering and science, from both commercial and academic organisations.

**What is InterFoam solver?**

InterFoam Solver for 2 incompressible, isothermal immiscible fluids using a VOF. (volume of fluid) phase-fraction based interface capturing approach, with optional mesh motion and mesh topology changes including adaptive re-meshing.

**What is Courant number fluent?**

The Courant number is a dimensionless value representing the time a particle stays in one cell of the mesh. It must be below 1 and should ideally be below 0.7. If the Courant number exceeds 1, the time step is too large to see the particle in one cell, it “skips” the cell.