LH2-STM: Liquid Hydrogen Simplified Transfer Model

This repository contains a MATLAB-based simulation framework for modeling the thermodynamic and mass transfer behavior of liquid hydrogen (LH₂) refueling processes. It supports bottom-fill, top-fill, and pump-based transfer methods with detailed physics including venting, heat transfer, and condensation dynamics.

Features

• Modular and extensible 0D simulation framework
• Two-tank system (supply and receiver)
• Models wall-fluid and interface heat transfer
• Supports top-fill splash cooling and subcooled jet modeling
• Integrates CoolProp (via Python) for accurate hydrogen properties
• Results exportable to .txt/.xls format with automatic logging
• Generates plots for pressure, temperature, mass flow, venting

Folder Structure

• STM_Main.m: Main script to run simulations
• STM_Parameters_*.m: Define parameter sets (Pump, Top-fill, etc.)
• STM_Simulation_*.m: Simulation scripts for each configuration
• STM_Plots.m: Visualization tool for key outputs
• STM_Initialization.m: Initializes variables and vectors
• SubcooledJet_ConvCoeff.m: Computes h for splash-cooling jets
• VentFlow.m: Models venting flow rate

How to Run

1. Set up parameters in one of the STM_Parameters_*.m files.
2. Run STM_Main.m.
3. View plots and results in the output folder.

Dependencies

• MATLAB
• CoolProp (accessed via Python integration)

Licensing

This project is licensed under the GPL-3.0 License.

Authors

• Albert Gil, University of California, Irvine (PhD Research)