The DISCHA Engineering Tool for LH2 Tank-to-Tank Transfer Operations

Alexandros G. Venetsanos; Ilias Tolias; Nektarios Koutsourakis; Federico Ustolin

doi:10.58895/hysafe.52

The DISCHA Engineering Tool for LH2 Tank-to-Tank Transfer Operations

Hydrogen Safety

Volume 3 (2026): Issue 1

By: Alexandros G. Venetsanos , Ilias Tolias , Nektarios Koutsourakis and Federico Ustolin

Open Access

|Jun 2026

Abstract

The DISCHA engineering tool has been extended to perform liquid hydrogen (LH2) tank-to-tank transfer operations. The tool uses Helmholtz free energy-based equations of state for hydrogen’s physical properties. The tanks can be modelled either with single-zone or multizone models, including heat transfer through the tank walls. The flow through the transfer lines is modelled using a method that accounts for phase change, friction, area change and heat transfer through the pipe walls. The maximum (choked) flow is calculated using the Possible Impossible Flow algorithm. Pumps can also be added to the transfer line. The present work presents the DISCHA tool’s recent validation as well as an investigation of the parameters that affect the tank-to-tank transfer most.

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Articles in this issue

DOI: https://doi.org/10.58895/hysafe.52

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Language: English

Page range: 191 - 200

Submitted on: Feb 3, 2026

Accepted on: Mar 30, 2026

Published on: Jun 3, 2026

Published by: KIT Scientific Publishing

In partnership with: Paradigm Publishing Services

Keywords:

DISCHA,

LH2,

tank-to-tank transfer,

© 2026 Alexandros G. Venetsanos, Ilias Tolias, Nektarios Koutsourakis, Federico Ustolin, published by KIT Scientific Publishing
This work is licensed under the Creative Commons Attribution 4.0 License.

Volume 3 (2026): Issue 1