How do I install the Openfoam 51 Y Verification skill?

Run npx skillmds@latest add vamseeachanta/openfoam-51-y-verification in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

What does the Openfoam 51 Y Verification skill do?

Sub-skill of openfoam: 5.1 y+ Verification (+5). It is listed under Coding & Dev Tools on SkillMD.

Is Openfoam 51 Y Verification safe to use?

SkillMD's automated safety review verdict for this skill is PASS. Independent scanners report: SkillSpector: PASS, Skill Scanner: PASS. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Openfoam 51 Y Verification?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Openfoam 51 Y Verification free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Openfoam 51 Y Verification?

vamseeachanta (@vamseeachanta) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Openfoam 51 Y Verification by vamseeachanta

Name: Openfoam 51 Y Verification
Author: vamseeachanta

File contents

5.1 y+ Verification (+5)

5.1 y+ Verification

# Compute y+ post-hoc
simpleFoam -postProcess -func yPlus -latestTime

Or add to controlDict:

functions { #includeFunc yPlus }

Target y+ ranges:

Approach	y+ target	When to use
Wall-resolved (low-Re)	< 1	Accurate wall heat transfer, separation
Wall functions (high-Re)	30-300	Industrial flows, coarser meshes
Buffer layer (avoid)	5-30	Neither model accurate here

5.2 Mass Conservation

Parse continuity errors from log:

time step continuity errors : sum local = 1.23e-07, global = -2.34e-15, cumulative = -5.67e-14

Metric	Acceptable
sum local	< 1e-4 (typical: 1e-6 to 1e-8)
global	< 1e-10 (should be near machine precision)
cumulative	Should not grow unbounded

5.3 Residual Convergence Criteria

Steady-state (simpleFoam):

Field	Typical target	Tight target
p	initial residual < 1e-4	< 1e-5
U	initial residual < 1e-4	< 1e-5
k, epsilon, omega	initial residual < 1e-4	< 1e-5

Convergence: residuals should decrease monotonically. Oscillating residuals indicate numerical issues.

Transient: Final residuals within each time step should reach solver tolerance. Initial residuals should not grow over successive time steps.

5.4 Benchmark Cases

Available locally at /usr/lib/openfoam/openfoam2312/tutorials/:

Lid-Driven Cavity (icoFoam):

# Path: tutorials/incompressible/icoFoam/cavity/cavity/
blockMesh && icoFoam
# Validates: PISO, basic BCs
# Expected: single primary vortex at Re=100, compare with Ghia et al. (1982)

Backward-Facing Step — pitzDaily (simpleFoam):

# Path: tutorials/incompressible/simpleFoam/pitzDaily/
blockMesh && simpleFoam
# Validates: SIMPLE, k-epsilon turbulence, wall functions
# Expected: reattachment at ~6-7 step heights downstream

Dam Break (interFoam):

# Path: tutorials/multiphase/interFoam/laminar/damBreak/damBreak/
blockMesh && setFields && interFoam
# Validates: VOF, free surface, interFoam

motorBike (simpleFoam + snappyHexMesh):

# Path: tutorials/incompressible/simpleFoam/motorBike/
# Full parallel workflow with snappyHexMesh
# Validates: complex geometry meshing, parallel execution, force coefficients

5.5 Function Objects for Monitoring

Include in controlDict functions {}:

Name	Purpose
`#includeFunc yPlus`	Wall y+ field
`#includeFunc CourantNo`	Courant number field
`#includeFunc fieldMinMax`	Min/max of all fields
`#includeFunc solverInfo`	Residual data per timestep
`#includeFunc wallShearStress`	Wall shear stress
`#includeFunc vorticity`	Vorticity field
`#includeFunc Q`	Q criterion for vortex identification

All function object templates at: /usr/lib/openfoam/openfoam2312/etc/caseDicts/postProcessing/

5.6 Export for ParaView

foamToVTK                                # all times -> VTK/ directory
foamToVTK -latestTime                    # latest only
foamToVTK -fields '(U p)'               # specific fields
foamToVTK -time '100:200'               # time range

---name: openfoam-51-y-verificationdescription: Sub-skill of openfoam: 5.1 y+ Verification (+5).---# 5.1 y+ Verification (+5)## 5.1 y+ Verification```bash# Compute y+ post-hocsimpleFoam -postProcess -func yPlus -latestTime```Or add to controlDict:```cppfunctions { #includeFunc yPlus }```**Target y+ ranges:**| Approach | y+ target | When to use ||----------|-----------|-------------|| Wall-resolved (low-Re) | < 1 | Accurate wall heat transfer, separation || Wall functions (high-Re) | 30-300 | Industrial flows, coarser meshes || Buffer layer (avoid) | 5-30 | Neither model accurate here |## 5.2 Mass ConservationParse continuity errors from log:```time step continuity errors : sum local = 1.23e-07, global = -2.34e-15, cumulative = -5.67e-14```| Metric | Acceptable ||--------|-----------|| sum local | < 1e-4 (typical: 1e-6 to 1e-8) || global | < 1e-10 (should be near machine precision) || cumulative | Should not grow unbounded |## 5.3 Residual Convergence Criteria**Steady-state (simpleFoam):**| Field | Typical target | Tight target ||-------|---------------|-------------|| p | initial residual < 1e-4 | < 1e-5 || U | initial residual < 1e-4 | < 1e-5 || k, epsilon, omega | initial residual < 1e-4 | < 1e-5 |Convergence: residuals should decrease monotonically. Oscillating residuals indicate numerical issues.**Transient:** Final residuals within each time step should reach solver tolerance. Initial residuals should not grow over successive time steps.## 5.4 Benchmark CasesAvailable locally at `/usr/lib/openfoam/openfoam2312/tutorials/`:**Lid-Driven Cavity (icoFoam):**```bash# Path: tutorials/incompressible/icoFoam/cavity/cavity/blockMesh && icoFoam# Validates: PISO, basic BCs# Expected: single primary vortex at Re=100, compare with Ghia et al. (1982)```**Backward-Facing Step — pitzDaily (simpleFoam):**```bash# Path: tutorials/incompressible/simpleFoam/pitzDaily/blockMesh && simpleFoam# Validates: SIMPLE, k-epsilon turbulence, wall functions# Expected: reattachment at ~6-7 step heights downstream```**Dam Break (interFoam):**```bash# Path: tutorials/multiphase/interFoam/laminar/damBreak/damBreak/blockMesh && setFields && interFoam# Validates: VOF, free surface, interFoam```**motorBike (simpleFoam + snappyHexMesh):**```bash# Path: tutorials/incompressible/simpleFoam/motorBike/# Full parallel workflow with snappyHexMesh# Validates: complex geometry meshing, parallel execution, force coefficients```## 5.5 Function Objects for MonitoringInclude in controlDict `functions {}`:| Name | Purpose ||------|---------|| `#includeFunc yPlus` | Wall y+ field || `#includeFunc CourantNo` | Courant number field || `#includeFunc fieldMinMax` | Min/max of all fields || `#includeFunc solverInfo` | Residual data per timestep || `#includeFunc wallShearStress` | Wall shear stress || `#includeFunc vorticity` | Vorticity field || `#includeFunc Q` | Q criterion for vortex identification |All function object templates at: `/usr/lib/openfoam/openfoam2312/etc/caseDicts/postProcessing/`## 5.6 Export for ParaView```bashfoamToVTK # all times -> VTK/ directoryfoamToVTK -latestTime # latest onlyfoamToVTK -fields '(U p)' # specific fieldsfoamToVTK -time '100:200' # time range```---

Frequently asked questions

Openfoam 51 Y Verification