Learning Forum

[Hasan]

In link below chapter 3 tutorial shows one injection in clause 4(c) and then another in 4(d) . 

Q1: how are the two separate fuel mixtures identified, diesel and gasoline? It doesn't label them. 

Q2: how can the associated cks file be reduced to less than 50 spieces? Using an academic version which is limited to less than 50 spieces. 

Thanks. 

 

https://ansyshelp.ansys.com/public/account/secured?returnurl=/Views/Secured/corp/v242/en/forte_tut/i469650165101.html

[Ren]

1. Both injections are set up for the same injector which is for Diesel as described in the tutorial. Gasoline is not directly injected. It's premixed at the start of the simulation
2. You have some options:
   • Create or find a reduced mechanism yourself that has less than 50 species. You can use Reaction Workbench to reduce mechanisms. Please refer to the Chemkin Reaction Workbench manual for details and examples.
   • Try a different chemical mechanism located in the Forte Data library (C:\Program Files\ANSYS Inc\v242\reaction\forte.win64\data).
   • Try a different engine simulation tutorial

[Hasan]

Alright, so the first (pilot) and second (main) injections are diesel. Thanks. 

[Hasan]

Multiple fuel injections with six seperate injection timings but no sign of diesel burning noiced. Using ANSYS Forte Student fuel type Diesel_1comp_35sp.cks. Similar settings to chapter 2 tutorial settings;  https://ansyshelp.ansys.com/public/account/secured?returnurl=/Views/Secured/corp/v251/en/forte_tut/i46901.html

Have I missed some setting out?