Learning Forum

[Mahmoud Awaga]

how can i change the material to hydrogen?

[jcooper]

Hi Mahmoud:

Some liquid materials may be unavailable for IC engine model. The fastest way to do this is just to edit one of the particle materials that appear in your dropdown and give it the properties of liquid h2. 

 

 Or you may also be able to add the h2-liquid material using the Fluent Database.

 

To do this, go to Materials and click on Create/Edit

 

Select Fluent Database:

 

Change Material Type to droplet-particle:

 

 

Copy hydrogen-liquid:

 

This will add it to your Droplet Particle Materials:

 

And you should then be able to change to this material in the injection properties.

I hope this helps.

Best Regards,

 

Judy

[Mahmoud Awaga]

thanks for repling 

i have another problem, i am using ANSYS Forte 2022 R1 , and i need to inject hydrogen gas directly to the chamber so i created a solid injector but the list of physical properties of species don't have hydrogen so how can i change this list to add hydrogen gas

[jcooper]

Hi Mahmoud:

 

It would be best to start a new thread for each model, as an engineer answering a Fluent thread may be unfamiliar with Forte, etc ...

From what I can see, all the combustible materials in the Chemistry library should be injectable.

Here is an example with gasoline:

The selection available for my example are all the c-h species in the chemistry set.  Your selection looks really strange, as those materials would not be together in one chemistry library.  h2 should be in almost every IC engine chemistry library that I know of.

You can check the contents of your chemistry library here:

and then here to get a full listing of available species.

If you are new to Forte, I would recommend looking over the tutorials and exploring one that is closest to the type of engine and fuel you are trying to model.

I hope this helps.

Best Regards,

Judy

[Mahmoud Awaga]

thanks for replying

 now i selected H2 as a species, so what is the selection of physical properties, the list not contain h2 gas or h2 liquid 

 

[Mani Shiravand]

Hi Mahmoud, 

I was also facing the same problem with Forte. The spray model in forte is actually for liquid fuels, so for gas H2 you can't use the spray model, you can define an inlet as your injector or using source model. 

Mani