XSim

Import Shape
Mesh
Basic Settings
Physical Property
Initial Condition
Flow Boundary Condition
Rotating Regions
Porous Regions
Particle Settings
Calculation Settings
Output
Export

Import Shape

Select files
Drop files
Add shapes
Edit shapes

Drop files here (.stl, .ast, .stla, .stlb, .obj, .3ds)

Type	Cuboid

Parameters

Minimum coordinate	m
Maximum coordinate	m
Number of Faces
Circumradius	m
Center of top	m
Center of bottom	m

Target
Type	Scale

Parameters

Scaling factor	0.001 : mm ⇨ m

Scaling center	Origin
	m
Displacement	m
Rotation angle	°
Axis direction	X axis

Axis position	Centroid
	m

Imported file size

Mesh

Volume mesh settings

Target number of base meshes
Number of base meshes
Maximum number of meshes
Minimum coordinate	m
Maximum coordinate	m
Computational domain	m

Refinement settings Number of meshes between levels

Range type	Cuboid
Minimum coordinate	m
Maximum coordinate	m
Center	m
Radius	m
Radius	m
Center of top	m
Center of bottom	m
Region
Assembly
Refinement level

Refinement condition

Feature line

Feature angle	°
Refinement level

Layer mesh settings

Layer thickness ratio

Region
Number of layers

Layer number condition

Basic Settings

Steady Transient

End time	sec

Time interval

Auto-setting by Courant number

Time interval	sec
Maximum Courant number

Analysis type

Turbulent Heat Rotating regions Multiphase Porous regions Particle

Turbulent model
Gravity acceleration	m/s²
Reference pressure	Pa

Boussinesq approximation

Physical Property

Basic physical property settings

Property name
Type

Physical property parameters

Densityg/cm³

Kinetic viscosity	m²/s

Kinetic viscosity $\nu=k\dot{\gamma}^{n-1} \quad \nu_\min \leq \nu \leq \nu_\max$

ν_Max	m²/s
ν_Min	m²/s
k	m²/s
n

Kinetic viscosity $\nu=\nu_\infty+\frac{\nu_0-\nu_\infty}{1+(m\dot{\gamma})^n}$

ν₀	m²/s
ν_∞	m²/s
m	s
n

Physical property parameters

Viscosity	Pa・s
Molar mass	g/mol
Specific heat	J/(kg・K)
Prandtl number

Equation of State $\rho={1\over RT} p + \rho_0$

R	J/(kg・K)
ρ₀	kg/m³

Boussinesq approximation $\rho=\rho_0[1-(T-T_0)]$

ρ₀	kg/m³
β	1/K
T₀	K

Additional physical property settings

Property name
Type

Physical property parameters

Densityg/cm³

Kinetic viscosity	m²/s

Kinetic viscosity $\nu=k\dot{\gamma}^{n-1} \quad \nu_\min \leq \nu \leq \nu_\max$

ν_Max	m²/s
ν_Min	m²/s
k	m²/s
n

Kinetic viscosity $\nu=\nu_\infty+\frac{\nu_0-\nu_\infty}{1+(m\dot{\gamma})^n}$

ν₀	m²/s
ν_∞	m²/s
m	s
n

Physical properties

Surface tensions

Initial Condition

Physical quantity
Value	Pa K m²/s² m²/s³ m²/s kg/(m・s)
Value	m/s
Property name
Range type	Cuboid
Minimum coordinate	m
Maximum coordinate	m
Center	m
Radius	m
Radius	m
Center of top	m
Center of bottom	m

Initial conditions

* If no condition is set to, a default value will be used.

Flow Boundary Condition

Region
Type

Flow boundary parameters

Flow velocity	m/s
Inflow temperature	K
Inflow fluid

Mass flow rate	kg/s
Inflow temperature	K
Inflow fluid

Volume flow rate	m³/s
Inflow temperature	K
Inflow fluid

Normal dirction velocity	m/s
Inflow temperature	K
Inflow fluid

Static pressure	Pa
Inflow fluid

Total pressure	Pa
Inflow fluid

None

Inflow temperatureK

Inflow fluid

None

Heat condition type

TemperatureK

Heat flux	W/m²
Initial temperature	K

Heat source	W
Initial temperature	K

Heat transfer coefficient	W/(m²・K)
Initial temperature	K
External temperature	K

None

Heat condition type

TemperatureK

Heat flux	W/m²
Initial temperature	K

Heat source	W
Initial temperature	K

Heat transfer coefficient	W/(m²・K)
Initial temperature	K
External temperature	K

Moving velocitym/s

Heat condition type

TemperatureK

Heat flux	W/m²
Initial temperature	K

Heat source	W
Initial temperature	K

Heat transfer coefficient	W/(m²・K)
Initial temperature	K
External temperature	K

Axis origin	m
Axis direction
Rotational velocity	°/s

Heat condition type

TemperatureK

Heat flux	W/m²
Initial temperature	K

Heat source	W
Initial temperature	K

Heat transfer coefficient	W/(m²・K)
Initial temperature	K
External temperature	K

None

Target region

Boundary conditions

* If no condition is set to a region, the region will be a slip wall.

* If no condition is set to a region, the region will be a adiabatic slip wall.

Rotating Regions

Rotating type
Region type	Sphere

Rotating parameters

Center	m
Radius	m
Rotational axis	m
Radius	m
Center of top	m
Center of bottom	m
Rotational velocity	°/s

Rotating region conditions

Porous Regions

Porous type	Darcy-Forchheimer law
Region type	Cuboid

Porous parameters

Pressure gradient $S = - (\mu d + \frac{\rho |U|}{2} f) U$ $S = - \rho C_0 |U|^{(C_1 - 1)} U$ $S = - \rho_{ref} (\alpha + \beta |U|) U$

d	1/m²
f	1/m
C₀	1/m
C₁
ρ_ref	g/cm³
α	1/s
β	1/m
Minimum coordinate	m
Maximum coordinate	m
Center	m
Radius	m
Radius	m
Center of top	m
Center of bottom	m
Assembly

Porous region conditions

Particle Settings

Particle density	g/cm³

Particle boundary conditions

Region
Type

Particle boundary parameters

Start at	s
Duration	s
Parcels per second	1/s
Particle diameter	mm
Initial velocity	m/s

None

Particle velocity before and after collision

Normal restitution coefficient C_⊥
Tangential restitution coefficient C_∥

Boundary conditions

* If no condition is set to a region, the region will be a perfectly elastic wall.

Calculation Settings

Parallel number
Numerical schemes	Normal
Matrix solvers	Stability

Show monitoring window, if possible

Relaxation Factors
Steady state convergence criteria

* The smaller value means more stable, the larger value means more speedy.

Output

Type
Interval
Format
Precision

General
Region
Sampling
Tracer
Extra file format

Residuals y+ Courant number Vorticity 2nd invariant of velocity gradient tensor

Minimum/Maximum values

Region
Type
Physical quantity
Drag direction
Lift direction
Reference velocity	m/s
Reference length	m
Reference area	m²

Output conditions

Physical quantity
Location	m

Output conditions

Inlet region
Type

Output conditions

Fluent Ensight GMV Tecplot Legacy VTK

Export

FormatOpenFOAM 12