Whats the best fluid model to use for water?

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For simulating heat transfer through a pipe in ANSYS, the choice of fluid model for water can significantly impact results. The Newtonian model is commonly used, but in certain conditions, such as the transition Reynolds flow regime, the power model may provide better accuracy. The specific temperature range of 56F to 112F is relevant for determining the appropriate model. Additionally, the type of ANSYS software (traditional or Workbench) and the pipe material can influence the simulation outcomes. Selecting the right model is crucial for achieving reliable heat transfer predictions.
HappMatt
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I realize this seems basic, but I'm looking around on the net and i just can't find the answer. I'm running a ANSYS simulation of heat transfer through a pipe and I was using a Newtonian model, but then someone mentioned about using the power model. I can't seem to find the definitive answer as to which is best. The flow is in the transition Reynolds flow regime between 56F and 112F on the tube wall.
thanks
 
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If you are still working on this, are you using ANSYS traditional or Work Bench? What is the pipe material?

Thanks
Matt
 

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