Whats the best fluid model to use for water?

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SUMMARY

The discussion centers on selecting the appropriate fluid model for an ANSYS simulation of heat transfer through a pipe. The user initially employed a Newtonian model but is considering the power model due to the transition Reynolds flow regime encountered between 56°F and 112°F. The choice of model significantly impacts simulation accuracy, particularly in varying temperature conditions. Clarification on whether to use ANSYS traditional or Workbench is also sought, along with details about the pipe material.

PREREQUISITES
  • Understanding of fluid dynamics and flow regimes
  • Familiarity with ANSYS simulation software
  • Knowledge of Newtonian and non-Newtonian fluid models
  • Basic principles of heat transfer in pipes
NEXT STEPS
  • Research the differences between Newtonian and power fluid models in ANSYS
  • Learn about the transition Reynolds flow regime and its implications for fluid modeling
  • Explore the capabilities of ANSYS Workbench versus traditional ANSYS for thermal simulations
  • Investigate the impact of pipe material on heat transfer and fluid behavior
USEFUL FOR

Engineers and researchers involved in thermal simulations, particularly those using ANSYS for fluid dynamics and heat transfer analysis in piping systems.

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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