How to define the valve lift profile of IC engine

November 3, 2005, 10:09

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

omarsobhy · November 5, 2005, 07:18

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.

November 3, 2005, 10:09	How to define the valve lift profile of IC engine	#1
TorN Guest Posts: n/a	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

November 5, 2005, 07:18	Re: How to define the valve lift profile of IC eng	#2
Sachin Guest Posts: n/a	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. omarsobhy likes this.

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