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-   -   How to define the valve lift profile of IC engine (https://www.cfd-online.com/Forums/fluent/38482-how-define-valve-lift-profile-ic-engine.html)

TorN November 3, 2005 10:09

How to define the valve lift profile of IC engine
 
Hi all, I'd like to simulate in-cylinder phenomena with fluent6.2. every thing ok except valve lift profile.

It does not clear in the user gide for how to set th valve lift profile.

Can I define the profile easily or I need to make a UDF funtion for valve.

Please suggest,

TorN

Sachin November 5, 2005 07:18

Re: How to define the valve lift profile of IC eng
 
Hi You need follow the following steps; 1) Model porous zone at the valve 2) Inertial and viscous coefficients need to be modeled through UDF 3) the udf will take care the Flow resistace i.e. high resist = valve close; Low resistance when valve is open.


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