Ignition delay and laminar flame speed calculations of ammonia/hydrogen mixtures
Tanttari, Jaakko (2025-06-13)
Ignition delay and laminar flame speed calculations of ammonia/hydrogen mixtures
(13.06.2025)
Julkaisu on tekijänoikeussäännösten alainen. Teosta voi lukea ja tulostaa henkilökohtaista käyttöä varten. Käyttö kaupallisiin tarkoituksiin on kielletty.
avoin
Julkaisun pysyvä osoite on:
https://urn.fi/URN:NBN:fi-fe2025061670404
https://urn.fi/URN:NBN:fi-fe2025061670404
Tiivistelmä
As the world is transitioning away from the traditional hydrocarbon fuels, hydrogen and ammonia have emerged as promising alternatives. However, different fuels regularly have drastically different combustion qualities. Two parameters very frequently used to characterise combustion are ignition delay and laminar flame speed.
This thesis will explore common strategies to determine ignition delay and laminar flame speed, as well as the repercussions the two have for example in compression ignition engines. The manner in which they are influenced by various physical and chemical factors will also be investigated.
Finally, chemical kinetics simulations will be conducted using the open-source library, Cantera, to calculate ignition delays and laminar flame speeds for hydrogen and ammonia across a range of operating conditions.
This thesis will explore common strategies to determine ignition delay and laminar flame speed, as well as the repercussions the two have for example in compression ignition engines. The manner in which they are influenced by various physical and chemical factors will also be investigated.
Finally, chemical kinetics simulations will be conducted using the open-source library, Cantera, to calculate ignition delays and laminar flame speeds for hydrogen and ammonia across a range of operating conditions.