neqsim-dynamic-simulation SKILL.md skillA

neqsim-dynamic-simulation from equinor/neqsim is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add equinor/neqsim/neqsim-dynamic-simulation@git:20261104.a55262f

Pins git:20261104.a55262f in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
equinor/neqsim
Path
.github/skills/neqsim-dynamic-simulation/SKILL.md
Versions recorded
17
Latest version
git:20261104.a55262f, committed Nov 4, 2026
First version recorded
Aug 28, 2026
Size
56,758 bytes
Repository stars
167
License
Apache-2.0

Dynamic simulation guidance for NeqSim. USE WHEN: running transient simulations, modeling startup/shutdown, tuning PID controllers, analyzing pressure/level dynamics, performing blowdown/depressurization, or setting up measurement devices and control loops. Covers runTransient, DynamicProcessHelper, controller tuning, and dynamic equipment configuration.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Dynamic Simulation Guidance

Guide for transient/dynamic process simulation in NeqSim.

## When to Use Dynamic Simulation

- Startup and shutdown sequences
- Controller tuning and loop analysis
- Pressure relief / blowdown scenarios
- Level and pressure dynamics
- Compressor surge analysis
- Pipeline transients (slug flow)
- Emergency depressurization (EDP/ESD)
- P&ID-derived valve actions where pressure, level, controller response, or inventory release changes with time

For valve-action studies that start from P&ID symbols and plant data, also load
`neqsim-pid-process-operations` to define the process graph, valve semantics,
historian tag mapping, and event schedule before running `runTransient`.

## Dynamic Simulation Architecture

NeqSim dynamic simulation advances a `ProcessSystem` with `runTransient()`
(using the configured timestep) or `runTransient(double dt, UUID id)` (using an
explicit timestep and calculation identifier).
Pass a finite, positive timestep. Process and model entry points reject zero,
negative, NaN, and infinite values before any area or equipment state changes.
Adaptive stepping rejects invalid requests rather than clamping them.

Each timestep:
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add equinor/neqsim/neqsim-dynamic-simulation@sha256:8e5662402091af42

The line at the top of this page pins the label git:20261104.a55262f, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_fxteqeohwh7gmrho.svg)](https://markdownregistry.com/a/art_fxteqeohwh7gmrho)

1 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 17 versions of this file, between Aug 28, 2026 and Nov 4, 2026, about one every 4 days.

versioncommittedcommitsizeaudit
git:20261104.a55262f latest2026-11-04 a55262f 56,758 BA view · diff
git:20261103.f81ac4a2026-11-03 f81ac4a 55,993 BA view · diff
git:20261102.89a28c62026-11-02 89a28c6 54,949 BA view · diff
git:20261102.4baca1b2026-11-02 4baca1b 54,494 BA view · diff
git:20261102.d219b082026-11-02 d219b08 54,162 BA view · diff
git:20261027.97a5aa22026-10-27 97a5aa2 45,790 BA view · diff
git:20261027.5cb76f22026-10-27 5cb76f2 45,147 BA view · diff
git:20261026.1672c122026-10-26 1672c12 42,224 BA view · diff
git:20261016.459b9ec2026-10-16 459b9ec 41,053 BA view · diff
git:20261016.9c510942026-10-16 9c51094 40,452 BA view · diff
git:20260907.fa14bd72026-09-07 fa14bd7 39,661 BA view · diff
git:20260906.805544b2026-09-06 805544b 38,393 BA view · diff
git:20260906.a7fb1372026-09-06 a7fb137 37,960 BA view · diff
git:20260906.7cbb6692026-09-06 7cbb669 37,710 BA view · diff
git:20260901.b25bfa42026-09-01 b25bfa4 36,728 BA view · diff
git:20260831.cc16fcc2026-08-31 cc16fcc 35,554 BA view · diff
git:20260828.3a8f8e52026-08-28 3a8f8e5 34,401 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (56758 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

equinor/neqsim · 167 stars · license Apache-2.0 · pushed 2026-11-08 · branch master

API

GET https://markdownregistry.com/api/v1/artifacts/art_fxteqeohwh7gmrho
GET https://markdownregistry.com/api/v1/resolve?ref=equinor/neqsim/neqsim-dynamic-simulation
GET https://markdownregistry.com/api/v1/blob/8e5662402091af42e38e6765c72801d9724142c4c88d1cf16050054b076b8436

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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