Ansys Learning Forum Forums Discuss Simulation Fluids RPI Model Diverges at high superheats Reply To: RPI Model Diverges at high superheats

zain.qazi
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And also, switching to Schiller Naumann would relieve us of this problem but will also show lower wall lubrication leading to wall temperature rising sharply at the later stages of the channel. My interpretation is that Schiller Naumann applies a smaller drag force as compared to Ishii-Zuber or Tomiyama and that prevents it from actively removing the bubbles from the near wall region, something that Tomiyama and Ishii-Zuber do very well, showing a decrease in wall temperature. I'm not sure what strategy to employ to get Ishii-Zuber or Tomiyama to function at high heat fluxes