fluid-property-calculator

Estimate fluid properties from temperature using empirical correlations.

45|14|Updated Nov 7, 2025
One-click install
npx skills add https://github.com/Soljourner/claude-engineering-skills --skill fluid-property-calculator
Or copy as Structured Prompt for Agent
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Skill: fluid-property-calculator
Source: https://github.com/Soljourner/claude-engineering-skills/tree/main/skills/helpers/fluid-property-calculator
Command: npx skills add https://github.com/Soljourner/claude-engineering-skills --skill fluid-property-calculator

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Fluid Property Calculator provides quick, offline estimates of fluid properties using well-established empirical correlations, avoiding the need for external databases.

Core Features & Use Cases

  • Quick property estimates for water and air (density, viscosity, thermal conductivity, etc.), plus vapor pressure and ideal gas properties.
  • Useful for preliminary design, thermal-hydraulic analyses, and educational tasks when data sources are unavailable.
  • Real-world usage: determine water density and viscosity at 20°C to feed a pipe-flow calculation or Reynolds-number checks in early designs.

Quick Start

Call water_properties(temperature_C) to obtain all water properties at that temperature.

Frequently Asked Questions about fluid-property-calculator

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I calculate water density and viscosity from temperature without a database?

Calculate water density and viscosity offline by calling water_properties(temperature_C), which applies empirical polynomials to return thermal properties without requiring any external database connection.

What's the best way to estimate air properties for thermal-hydraulic analysis?

Estimate air properties for thermal-hydraulic analysis by using air_properties(T, P), which applies Sutherland and other empirical correlations to derive density and viscosity from temperature and pressure inputs.

Can I get fluid property estimates offline for preliminary design tasks?

Get offline fluid property estimates for preliminary design by applying built-in empirical correlations like Vogel and Antoine, which output rapid viscosity and vapor pressure values without external dependencies.

Does the fluid property calculator support vapor pressure and ideal gas calculations?

The fluid property calculator supports vapor pressure and ideal gas calculations by exposing gas_properties(gas, T, P), utilizing Antoine equations and related correlations to estimate properties for various gases.

What empirical correlations are used for estimating fluid properties?

Empirical correlations for estimating fluid properties include polynomials for water, Sutherland for air viscosity, Vogel for liquid viscosity, and Antoine for vapor pressure, ensuring rapid database-free property generation.

Can I use these fluid property estimates for Reynolds number checks in pipe flow?

Use these fluid property estimates for Reynolds number checks in pipe flow by extracting density and viscosity values from water_properties or air_properties, feeding them directly into your hydrodynamic calculations.