I am trying to take advantage of the periodic boundary conditions in ANSYS FLUENT program to model a small area of a heat exchanger with a counter-flow. In boundary conditions I can put the entry temperature for one fluid only but for the other fluid how we will put the temperature where it is not known !!
Please help me
Note: The geometry of the exchanger towards the flow is frequent so I want to use periodic limit conditions to reduce calculation time and improve network quality.
Insulated.
See this:
https://pdfs.semanticscholar.org/aaf7/843b6d307ef08c1fcbfdb081c90262bacb5f.pdf
Thank you, Mr. Amir, for your answer, but in the article I have been modeling the entire channel and applying periodic boundary conditions on the upper and lower sides but I want to apply the boundary conditions to a part of the channel and apply the boundary conditions to each of this part in addition to the top and bottom parts. Amir Reza Ansari Dezfoli
Learn more about Boundary Temperature
Evaluate the temperature intervals defined by the ‘interval boundary temperatures’. These can be defined in the following way: the unadjusted temperatures of the cold streams can be used, and the hot stream temperatures can be adjusted by subtracting δTmin from the actual values. In this way, the effect of the minimum temperature difference has been included in the calculation ( for more information see https://www.sciencedirect.com/topics/engineering/boundary-temperature)
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