[dhanu@iitk.ac.in]

Hi,

I want to simulate the H2/CNG fuelled SI engine using CONVERGE v3.0. The experimental data that we have is taken using 2 valve engines (one for intake and the other for exhaust). However, converge has examples of 4 valves (2 for intake and 2 for exhaust). Is there any problem, If I simulate the 2 valve engine with 4 valves? or is there any example available with a two-valve PFI engine?

Regards,

Dhananjay

[Yaju]

Hi Dhananjay,

If the intention is to just create a dummy example, then it is fine running the example case geometry with modified fuel composition.

But if you want to compare the results with experiments, then you need to run the experimental geometry with actual intake and exhaust boundary conditions and valve lift profiles.

I hope this helps.

[dhanu@iitk.ac.in]

Originally Posted by Yaju

Hi Dhananjay,

If the intention is to just create a dummy example, then it is fine running the example case geometry with modified fuel composition.

But if you want to compare the results with experiments, then you need to run the experimental geometry with actual intake and exhaust boundary conditions and valve lift profiles.

I hope this helps.

Hi, Thanks for your suggestion. Can you let me know one more thing, is there any example case available with two valves in Converge's previous versions? I'm using v3.0 in which there is no example with 2 valves.

[Yaju]

Unfortunately, none of the CONVERGE examples are a two-valve engine. There are some publicly available two-valve geometries like the transparent combustion chamber (TCC). TCC has was primarily used to make experimental measurements for premixed propane combustion.

https://deepblue.lib.umich.edu/handle/2027.42/108382