Calculate Pressure Drop in Heat Exchanger header and tube

mbbb · January 11, 2022, 10:56

I have a Charge air cooler (a heat exchanger). I know the mass flow rate, temperature and velocity at the inlet to the header of the charge air cooler. My aim is to calculate the total pressure drop in the inlet header, tubes and the outlet header.
A) My confusion is regarding what type of boundary conditions i need to apply as i know both the pressure as well as velocity at the inlet.
B) I was hoping to provide mass flow inlet and the density (calculated from known pressure and velocity from the ideal gas equation)... But i am not sure if i am in the right direction.
Also currently i am not analysing the heat transfer aspect of this problem.
I am using StarCCM +

LuckyTran · January 11, 2022, 11:07

Use a mass flow inlet and pressure outlet. But iterate the outlet pressure until the inlet pressure matches what you know.

mbbb · January 12, 2022, 06:28

Thanks!
You mean I'll provide different pressure values at the outlet until i get the desired pressure at inlet right?

January 11, 2022, 10:56	Calculate Pressure Drop in Heat Exchanger header and tube	#1
mbbb New Member murchana Join Date: Jul 2018 Posts: 5 Rep Power: 7	I have a Charge air cooler (a heat exchanger). I know the mass flow rate, temperature and velocity at the inlet to the header of the charge air cooler. My aim is to calculate the total pressure drop in the inlet header, tubes and the outlet header. A) My confusion is regarding what type of boundary conditions i need to apply as i know both the pressure as well as velocity at the inlet. B) I was hoping to provide mass flow inlet and the density (calculated from known pressure and velocity from the ideal gas equation)... But i am not sure if i am in the right direction. Also currently i am not analysing the heat transfer aspect of this problem. I am using StarCCM +

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January 11, 2022, 11:07		#2
LuckyTran Senior Member Lucky Join Date: Apr 2011 Location: Orlando, FL USA Posts: 5,674 Rep Power: 65	Use a mass flow inlet and pressure outlet. But iterate the outlet pressure until the inlet pressure matches what you know.

January 12, 2022, 06:28		#3
mbbb New Member murchana Join Date: Jul 2018 Posts: 5 Rep Power: 7	Thanks! You mean I'll provide different pressure values at the outlet until i get the desired pressure at inlet right?