Presented by:
Adam Klingbeil, Senior Engineer – Advanced Engine R&D 
Wabtec Corporation

Sameera Wijeyakulasuriya, Project Manager 
Convergent Science

With global efforts underway to transition to carbon-free 
mobility, hydrogen (H2) is receiving significant interest 
for its potential as an energy carrier. Several OEMs have 
already developed H2-powered internal combustion engines 
(H2ICEs), and auxiliary technologies around H2ICEs are being 
investigated to enable broader commercialization. Auxiliary 
technologies such as flame arrestors and durable storage 
tanks are necessary to ensure the safety of H2 combustion 
devices. Other ongoing research efforts are dedicated to 
studying processes that promote the proper operation of H2 
devices, such as H2 injector flows and tank 
filling/emptying. CFD is an effective tool for designing H2-
powered ICEs and gas turbines, as well as relevant auxiliary 
technologies. CFD provides insight into the governing 
physics of these systems and offers an economical method to 
test possible solutions and methods. However, H2 poses a 
number of modeling challenges: high injection velocities, 
low density, high mass diffusivity in air, wide flammability 
range, high burning velocities, and low ignition energy. In 
this webinar, we will demonstrate how CONVERGE CFD software 
is uniquely suited to address these challenges for a variety 
of applications, including flame arrestors, self-ignition of 
H2 tank leakages, H2 tank filling and emptying, H2 fuel 
injection, rotating detonation engines, and H2ICEs. We’ll 
take a closer look at a specific application of CONVERGE for 
analyzing a large-bore, medium-speed locomotive engine that 
is being modified for dual-fuel H2-diesel operation. The 
analysis explores the effect of temperature and compression 
ratio on the combustion event. Furthermore, additional 
analysis is investigating undesirable combustion events in 
the intake port.