🎉Community Raffle - Win $25

An exclusive raffle opportunity for active members like you! Complete your profile, answer questions and get your first accepted badge to enter the raffle.

Join and Win

Boundary condition for charge-air-cooler

Torbern_Klason75

Hello,

I got a case where I got a liquid cold charge air cooler. The incoming air has a massflow of 0.15 kg/s with a temperature of 150°C and Pressure of 2.2 atmosphere.

How do I set this BC in simlab? Looking on the BC for massflow, then I can set temperature and massflow...but not pressure.

How do I do with the material-database?

I have air, but do I make a new material, called AIR-2 or something...and change density to pointwise-linear and write in a density table as function of temperature? Or can Simlab handle this automatically?

Find more posts tagged with

AcuSolve

English

SimLab

v2022.3

Accepted answers

Rafael Silva_20528

Hello Torbern,

I believe it is possible to achieve your requirements using Advanced BC. Let me suggest you doing the following:

1. Define the Inlet as Pressure. You can set pressure and temperature in this panel.

2. Create an Advanced BC, surface integrated for Mass Flux.

All comments

Rafael Silva_20528

Hello Torbern,

I believe it is possible to achieve your requirements using Advanced BC. Let me suggest you doing the following:

1. Define the Inlet as Pressure. You can set pressure and temperature in this panel.

2. Create an Advanced BC, surface integrated for Mass Flux.

acupro

You would not specify both velocity/flow rate and pressure at the inlet. That would over-specify the condition.

At the outlet you would specify the pressure. If you specify the inlet pressure, the velocity/flow-rate is the unknown and solved. If you specify the inlet velocity/flow-rate, the pressure is the unknown and solved.

Ideal-Gas density is a function of absolute pressure and absolute pressure. If you want density a function of absolute temperature only, you could do that with piecewise-linear density and define the density-temperature pairs.