Skip to content
cccskills
FreePublished on GitHub

thermodynamics-mech-expert

Expert-level engineering thermodynamics covering laws of thermodynamics, thermodynamic cycles, steam power plants, refrigeration, gas dynamics, and combustion.

The English summary is being prepared. Showing the original description.

luokai0/ai-agent-skills-by-luo-kai

Run score Not tested

See how to install

Files included (2)

  • SKILL.md2.6 KB
  • .gitkeep0 B

SKILL.md (original)

Review the instructions the agent will receive before you install.

Thermodynamics Mechanical Expert

Before Starting

  1. Which system type? (closed, open, steady-flow)
  2. Which cycle? (Rankine, Brayton, Otto, Diesel, refrigeration)
  3. Ideal or real with irreversibilities?

Core Expertise Areas

Laws of Thermodynamics

First law: energy is conserved, delta U = Q minus W for closed system. Second law: entropy of universe increases for irreversible processes. Entropy: ds = dQ_rev over T, measure of irreversibility. Exergy: maximum useful work from system brought to equilibrium with environment.

Power Cycles

Rankine cycle: steam power plant, boiler, turbine, condenser, pump. Rankine efficiency: improved by superheat, reheat, and regeneration. Brayton cycle: gas turbine, compressor, combustor, turbine. Brayton efficiency: eta = 1 minus 1 over r_p to the power k-1 over k. Combined cycle: gas turbine exhaust heats steam Rankine, 60% efficiency possible.

Refrigeration

Vapor compression: compressor, condenser, expansion valve, evaporator. COP: coefficient of performance, QL over W_net for refrigerator. Heat pump COP: QH over W_net, always greater than refrigerator COP by one. Carnot COP: maximum possible COP for given temperature limits.

Gas Dynamics

Mach number: M = V over speed of sound, speed of sound = sqrt of gamma R T. Isentropic relations: T2 over T1 = P2 over P1 to the k-1 over k power. Normal shock: supersonic to subsonic, sudden pressure rise, entropy increase. Nozzle flow: converging accelerates to M=1 at throat, diverging to supersonic.

Best Practices

  • Sketch system and identify boundary before applying first law
  • Distinguish heat and work sign conventions carefully
  • Use property tables for accurate steam and refrigerant properties
  • Check second law consistency of calculated processes

Common Pitfalls

PitfallFix
Sign convention errorsDefine positive Q in and positive W out at start
Using ideal gas for steamUse steam tables for accurate properties
Ignoring pump work in RankineInclude pump work even though small compared to turbine
Adiabatic assumption for non-insulated systemOnly apply adiabatic if process is fast or well-insulated

Related Skills

  • heat-transfer-expert
  • fluid-mechanics-expert
  • physics/thermodynamics-expert

Reviews

No reviews yet. Tell others what you thought.

Comments

No login needed. Share how it worked for you, ask a question, or note where it did not run.

No comments yet. Be the first to write one.

Comments are published right away. Do not include personal information such as email addresses or phone numbers. Up to 2 URLs.

0 / 1,000 characters

This form is protected by reCAPTCHA, and the Google Privacy Policy and Terms of Service apply.

More skills from this repository

abstract-algebra-expert

Free

Expert-level abstract algebra knowledge. Use when working with groups, rings, fields, modules, Galois theory, representation theory, or algebraic structures. Also use when the user mentions 'group', 'ring', 'field', 'homomorphism', 'isomorphism', 'normal subgroup', 'quotient group', 'Sylow theorem', 'Galois theory', 'polynomial ring', 'ideal', 'module', 'vector space', or 'representation theory'.

The English summary is being prepared. Showing the original description.

luokai0/ai-agent-skills-by-luo-kai13Updated May 6, 2026

acoustics-expert

Free

Expert-level acoustics knowledge. Use when working with sound waves, acoustic propagation, resonance, standing waves, Doppler effect, room acoustics, ultrasound, noise control, musical acoustics, or architectural acoustics. Also use when the user mentions 'sound wave', 'decibel', 'frequency', 'resonance', 'standing wave', 'Doppler effect', 'acoustic impedance', 'reverberation', 'ultrasound', 'noise control', 'harmonics', or 'sound intensity'.

The English summary is being prepared. Showing the original description.

luokai0/ai-agent-skills-by-luo-kai13Updated May 6, 2026

aerodynamics-expert

Free

Expert-level aerodynamics covering subsonic and supersonic flow, lift and drag, airfoil theory, boundary layers, compressible flow, and CFD methods.

The English summary is being prepared. Showing the original description.

luokai0/ai-agent-skills-by-luo-kai13Updated May 6, 2026

air-quality-expert

Free

Expert-level air quality engineering covering pollutant sources, atmospheric dispersion, air quality standards, emission controls, and air quality modeling.

The English summary is being prepared. Showing the original description.

luokai0/ai-agent-skills-by-luo-kai13Updated May 6, 2026

aircraft-structures-expert

Free

Expert-level aircraft structures covering structural design philosophy, wing and fuselage analysis, fatigue and damage tolerance, composite structures, and certification.

The English summary is being prepared. Showing the original description.

luokai0/ai-agent-skills-by-luo-kai13Updated May 6, 2026

algorithms-cs-expert

Free

Expert-level algorithms and complexity theory covering sorting, searching, graph algorithms, dynamic programming, greedy algorithms, NP-completeness, and algorithm design paradigms.

The English summary is being prepared. Showing the original description.

luokai0/ai-agent-skills-by-luo-kai13Updated May 6, 2026

See all skills by luokai0

Report a problem with this skill