Learning Forum

[atulsingh92]

Hello,

My fluid (water) needs to be at 70C temperature at the inlet boundary condition.

So, is the correct way to correctly set fluid is to copy-water-> maually change water properties of density rho Cp and mu, and then apply this fluid to inlet?

Or

Water should remain as it is from the materials section, and just the inlet temperature should be provided, which fluent will itself converge to the 70C properties of water?

[Rob]

Why would the properties change if you've set constant in the panel? You're right in that you need to copy from the database, well actually you can copy and alter air but the database tends to be quicker.

[Nikhil Narale]

Hello,

If you use the default constant values, irrespective of the temperature, it is going to be constant. If you want it to be constant but corresponding to 70C, change it manually.

However, if you want the properties to change corresponding to the change in the fluid temperature (in real-time), you can define them as a function of temperature. To know more, please refer this: 8.2. Defining Properties Using Temperature-Dependent Functions (ansys.com)
If you are unable to open the document, refer this forum discussion on how to access the documentation: Using Help with links ÔÇö Ansys Learning Forum

Nikhil