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Coefficient of pressure on surfaces

- May 19, 2026 at 9:48 pm
  
  kiran.purushothamakeshavan
  Subscriber
  
  Hey,
  
  I am trying to reproduce pressure coefficients from a CFD study on inclined ground-mounted solar PV panels using standard/ RNG model.
  My panel-face is within the recommended wall-function range, around 30 to 300, but the surface pressure/Cp values on my panel are still lower than the reference paper.
  The paper reports relatively high net pressure coefficients in the range of 0.75 max for the top panel and -0.5 to -0.75 on the back panel.
  I have checked the mesh , but I am still not matching their Cp levels.
  What could cause lower Cp values in my simulation, even when the turbulence model and range seem similar?
  
  This is the paper's name, I'm specifically concerned about the Figure 7a. for H0.
  AERODYNAMIC AND STRUCTURAL ANALYSIS OF ASOLAR PANEL - Yemenici, O. & Oruc, E. nt j simul model 24 (2025) 2, 191-202
  
  My analysis is that the model is probably predicting low static pressure on the surface and hence a lower cp value

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