Crate ushma 

Ushma

Ushma (Sanskrit: ऊष्मा — heat, thermal energy) — Thermodynamics simulation for AGNOS

Provides heat transfer simulation, entropy calculations, equations of state, and thermal material properties. Built on hisab for math foundations.

Feature flags

Feature	Default	Description
transfer	yes	Conduction, convection, radiation, fins, heat exchangers, view factors
state	yes	Ideal gas, van der Waals, Redlich-Kwong, Peng-Robinson, virial EOS
entropy	yes	Entropy, Carnot, Helmholtz/Gibbs free energy, entropy of mixing
material	yes	10 built-in materials with thermal properties at ~300 K
phase	yes	Phase transitions, Clausius-Clapeyron, 8 substance data sets
cycle	yes	Otto, Diesel, Brayton, Rankine, refrigeration cycles
numerical	yes	1D/2D finite difference, Crank-Nicolson, thermal networks
chem	yes	Hess’s law, equilibrium constants, Van’t Hoff, flame temperature
stat	yes	Boltzmann, partition functions, Maxwell-Boltzmann, Debye/Einstein
steam	no	Saturated + superheated steam tables (IAPWS-IF97)
ai	no	Daimon/hoosh agent integration
logging	no	Structured logging via tracing
full	—	Enables all features

Modules

• transfer — Conduction, convection, radiation, fins, heat exchangers, dimensionless numbers
• state — Equations of state, real gas models, compressibility, mixture rules
• entropy — Entropy, free energy, thermodynamic potentials
• material — Thermal properties, specific heat, conductivity tables
• phase — Phase transitions, Clausius-Clapeyron, substance data
• [steam] — Saturated and superheated steam tables
• cycle — Thermodynamic cycles, diagram generation, efficiency comparison
• numerical — Finite difference solvers, thermal networks
• chem — Chemical thermodynamics, Hess’s law, equilibrium
• stat — Statistical thermodynamics, Boltzmann, partition functions
• error — Error types

Re-exports

pub use error::UshmaError;

Modules

chem

Chemical thermodynamics — formation data, Hess’s law, equilibrium, flame temperature.

cycle

Thermodynamic cycles — Otto, Diesel, Brayton, Rankine, refrigeration.

entropy

Entropy, free energy, thermodynamic potentials, equilibrium.

error

Error types for ushma.

material

Thermal material properties — conductivity, specific heat, density.

numerical

Numerical methods — finite difference, thermal networks, grid solvers.

phase

Phase transitions — Clausius-Clapeyron, latent heat, phase diagram lookup.

stat

Statistical thermodynamics — Boltzmann, partition functions, speed distributions, solid Cv.

state

Equations of state — ideal gas, van der Waals, phase diagrams.

transfer

Heat transfer — conduction, convection, radiation.