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SHD SimSHD Sim CFD
Draft. This manual is new and still being checked against the software as it is verified. Some pages will change. If something here does not match what you see, the software is right — tell us and we will fix the page.

Initial conditions

Where it is

Section titled “Where it is”

Setup tree: Initial conditions

Controls

Section titled “Controls”

Method

Section titled “Method”

Initialise

Section titled “Initialise”
  • Control: choice (ComboRow)
  • Default: Uniform
  • Bound to: CaseState.initMethod
  • Options: Uniform, Potential flow, From an existing run
  • Writes: potentialFoam -writephi, 0/* internalField

Source case

Section titled “Source case”
  • Control: value (ValueField)
  • Default: empty
  • Bound to: CaseState.initMapSource
  • Value modes: none (plain entry)
  • Shown when: CaseState.initMethod === "From an existing run"

The case directory to map from. Its latest time is used.

Use this case’s own run

Section titled “Use this case’s own run”
  • Control: action (ToolButton2)
  • Enabled when: CaseState.runDirectory !== ""

Track the inlet

Section titled “Track the inlet”
  • Control: on/off (ToggleRow)
  • Default: true
  • Bound to: CaseState.initFromInlet

Seed the domain with the inlet’s velocity and turbulence, so changing the inlet keeps the initial field consistent.

Values

Section titled “Values”

Velocity

Section titled “Velocity”
  • Control: value (ValueField)
  • Unit: m/s
  • Bound to: CaseState.effectiveInitVelocity
  • Writes: 0/U internalField

Pressure

Section titled “Pressure”
  • Control: value (ValueField)
  • Unit: Pa
  • Default: 0
  • Bound to: CaseState.initPressure
  • Writes: 0/p … m²/s² (kinematic)

Temperature

Section titled “Temperature”
  • Control: value (ValueField)
  • Unit: K
  • Default: 293.15
  • Bound to: CaseState.initTemperature
  • Writes: 0/T internalField
  • Shown when: CaseState.energyEnabled

Turbulence

Section titled “Turbulence”

Intensity

Section titled “Intensity”
  • Control: value (ValueField)
  • Unit: %
  • Bound to: CaseState.effectiveInitIntensity
  • Shown when: CaseState.turbulenceFields.length > 1

Length scale

Section titled “Length scale”
  • Control: value (ValueField)
  • Unit: m
  • Bound to: CaseState.effectiveInitLengthScale
  • Shown when: CaseState.turbulenceFields.length > 1

Regions

Section titled “Regions”

+ Add region

Section titled “+ Add region”
  • Control: action (ToolButton2)

Conditional and repeated groups

Section titled “Conditional and repeated groups”

Per item in CaseState.initRegions

Section titled “Per item in CaseState.initRegions”

repeated once for every entry in CaseState.initRegions

Shape

Section titled “Shape”
  • Control: choice (ComboRow)
  • Default: box
  • Options: box, sphere
  • Writes: setFieldsDict/regions

Field

Section titled “Field”
  • Control: choice (ComboRow)

Value

Section titled “Value”
  • Control: value (ValueField)
  • Default: 0
  • Value modes: none (plain entry)

A bare number for a scalar, or (x y z) for a vector — which keyword setFields needs depends on it.

Min X

Section titled “Min X”
  • Control: value (ValueField)
  • Unit: m
  • Value modes: none (plain entry)
  • Shown when: regionCard.model.shape === "box"

Min Y

Section titled “Min Y”
  • Control: value (ValueField)
  • Unit: m
  • Value modes: none (plain entry)
  • Shown when: regionCard.model.shape === "box"

Min Z

Section titled “Min Z”
  • Control: value (ValueField)
  • Unit: m
  • Value modes: none (plain entry)
  • Shown when: regionCard.model.shape === "box"

Max X

Section titled “Max X”
  • Control: value (ValueField)
  • Unit: m
  • Value modes: none (plain entry)
  • Shown when: regionCard.model.shape === "box"

Max Y

Section titled “Max Y”
  • Control: value (ValueField)
  • Unit: m
  • Value modes: none (plain entry)
  • Shown when: regionCard.model.shape === "box"

Max Z

Section titled “Max Z”
  • Control: value (ValueField)
  • Unit: m
  • Value modes: none (plain entry)
  • Shown when: regionCard.model.shape === "box"

Centre X

Section titled “Centre X”
  • Control: value (ValueField)
  • Unit: m
  • Value modes: none (plain entry)
  • Shown when: regionCard.model.shape === "box"

Centre Y

Section titled “Centre Y”
  • Control: value (ValueField)
  • Unit: m
  • Value modes: none (plain entry)
  • Shown when: regionCard.model.shape === "box"

Centre Z

Section titled “Centre Z”
  • Control: value (ValueField)
  • Unit: m
  • Value modes: none (plain entry)
  • Shown when: regionCard.model.shape === "box"

Radius

Section titled “Radius”
  • Control: value (ValueField)
  • Unit: m
  • Value modes: none (plain entry)
  • Shown when: regionCard.model.shape === "box"

Problems reported against this step

Section titled “Problems reported against this step”

The application reports no problems against this step.

… marks a value the application computes at run time, so the source carries no fixed text for it.