could anyone tell me, how to do the flow simulation(counter flow) by using real gas (R410A) & water
when i tried to simulate the heat transfer is taking place, it is working when using air and water but not with R410A to water.
How are you measuring heat transfer?
What are you expecting?
Seems strange that the exact same model would be different using a different fluid.
But if you are expecting phase change, that could be part of the issue.
Thank you for your reply Jared,what i am expecting from the model is outlet temperature of water and outlet temperature of realgas R410A.What i had was the realgas heat reduced to 40 C (input was 72 C)but inlet water 30C and outlet water just only 32 C.if 30 C lost in gas and gain in water only 2 C ,where is the rest of energy gone evan my mesh level 6?
i will upload my model if you want to have a look Jared?
you can upload using the "Advanced editor" at the top right hand corner when you're posting. that will give everyone the ability to take a look at what you're doing.
my first thought is to do an energy balance. you haven't mentioned if your external wall condition is adibatic, if it is, that makes it easy. because it is just in = out. you can use a surface parameter to plot enthalpy to do this.
Thank you for your help , and i uploaded the file
226 kb, please make sure it is a pack and go of your assembly.
Make sure to let us know what your external condition is and what your energy balance is saying. It might also be helpful to know what values you are expecting.
I would think your result is right. I did not dig up the R410a. But R134a density is about 3.5 kg/m^3 while its Cp is 1800 J/kg K. Water density is 1000 kg/m^3 and Cp is 4200 J/kg K. I do not know your mass flow rate. But must of the time, you will not see water temperature raise a lot because the density of water and Cp of water is high. Like Jared said, do a energy balance and you might see the problem here.
thank you so much for your reply
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