Creating a Combustion Model for 2-Stroke Engines

[Ghali]

Hi every body !

I am really gladed to be here to ask my very first question. I am working on a scolar project. My objective is creating a combustion model for a 2 stroke engine. The model that i have proposed is a 0D one, I have succed to describe the majority of mecanisms that i have found in books or by analysing experimental datas. Now I have one probleme which is that I can't express the Ignition advance as a fonction of my two principal parameters of combustion which are half burning time and burning time. I have tried to use Wiebe combustion to optimise my specific consumption, but the road is always blocked.

Do you have an idea how It can works. Thank you in advance for your ideaaas !

Ghali

 

[eljose79]

Hi Ghali,

Welcome to the forum and congratulations on your first project! Creating a combustion model for a 2 stroke engine is a challenging task, but it sounds like you have made good progress so far. As for your question about expressing ignition advance as a function of half burning time and burning time, there are a few potential approaches you could take. Here are some suggestions:

1. Consider using empirical data: Instead of trying to come up with a theoretical equation for ignition advance, you could use empirical data from previous experiments or simulations to determine the relationship between ignition advance and half burning time/burning time. This would require some data analysis and curve fitting, but it could provide a more accurate estimation of the ignition advance for your model.

2. Investigate other combustion models: While the Wiebe combustion model may be a popular choice, there are other models that could potentially work better for your specific engine and parameters. Some examples include the Arrhenius model, the Zeldovich model, and the Eddy Break-Up model. It may be worth exploring these and seeing if they can better capture the relationship between ignition advance and your combustion parameters.

3. Collaborate with other researchers: If you are still struggling to find a solution, consider reaching out to other researchers in the field or collaborating with other students or professors at your institution. They may have some insights or ideas that could help you overcome this roadblock.

I hope these suggestions are helpful and good luck with your project! Don't hesitate to reach out if you have any further questions or need additional assistance.