Pressure input for Velocity Inlet in middle of 2D transient Simulation

Shekhaai · August 30, 2016, 15:54

I am working on 2D Transient Simulation within a tube. At the start of simulation the inlet is closed and high pressure and temperature gases are allowed through exhaust. After certain time the inlet opens and air at P= 1.5 times ambient and velocity = 122 m/s must be supplied. How to define pressure without Initializing again ( I want all other parameters to be same, initializing will reset and is not favorable). Please suggest.

ComputerGuy · August 30, 2016, 23:43

Run your simulation from 0 to time t, where t= the time at which you'd like to change your inlet condition.

Then, change your inlet boundary condition once the simulation finishes the first run.

This can also be accomplished with a UDF, but this is the simplest way.

ComputerGuy

Quote:

Originally Posted by Shekhaai

I am working on 2D Transient Simulation within a tube. At the start of simulation the inlet is closed and high pressure and temperature gases are allowed through exhaust. After certain time the inlet opens and air at P= 1.5 times ambient and velocity = 122 m/s must be supplied. How to define pressure without Initializing again ( I want all other parameters to be same, initializing will reset and is not favorable). Please suggest.

August 30, 2016, 15:54	Pressure input for Velocity Inlet in middle of 2D transient Simulation	#1
Shekhaai New Member Shekhar Join Date: Aug 2016 Posts: 1 Rep Power: 0	I am working on 2D Transient Simulation within a tube. At the start of simulation the inlet is closed and high pressure and temperature gases are allowed through exhaust. After certain time the inlet opens and air at P= 1.5 times ambient and velocity = 122 m/s must be supplied. How to define pressure without Initializing again ( I want all other parameters to be same, initializing will reset and is not favorable). Please suggest.

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