Hi,
I am new to COMSOl modeling and was helplessly stuck by a problem. Here is it:
I am trying to model the fluid flow in a porous tube, which can not be wetted by the fluid. There is relative vacuum outside the tube (around 4kpa). Since the inlet fluid is of temperature of around 60 degree, a pressure drive exsistence across the porous tube, carring out the water vapor through the porous tube. To model the process, I chose the non-isothermal flow and Darcy's law in the model to describe the hot fluid flow inside the tube and the water vapor evaporation at the inner surface of the tube and passing through the porous tube.
Here is the question: I set the outer surface of the tube pressure as 4kpa; how to set the pressure inside at the surface, which depends on the temperature of the inner surface, according to Antoine equation: P=f(T). Is there a convinient way express the local P in terms of local temperature T, which can only be solved in the end. Thanks a lot.
Regards,
Sparrow
I am new to COMSOl modeling and was helplessly stuck by a problem. Here is it:
I am trying to model the fluid flow in a porous tube, which can not be wetted by the fluid. There is relative vacuum outside the tube (around 4kpa). Since the inlet fluid is of temperature of around 60 degree, a pressure drive exsistence across the porous tube, carring out the water vapor through the porous tube. To model the process, I chose the non-isothermal flow and Darcy's law in the model to describe the hot fluid flow inside the tube and the water vapor evaporation at the inner surface of the tube and passing through the porous tube.
Here is the question: I set the outer surface of the tube pressure as 4kpa; how to set the pressure inside at the surface, which depends on the temperature of the inner surface, according to Antoine equation: P=f(T). Is there a convinient way express the local P in terms of local temperature T, which can only be solved in the end. Thanks a lot.
Regards,
Sparrow