Difficulty reproducing pressure visualization from research paper

[SiyonaAgarwa]

I am attempting to reproduce the pressure visualization results from the following research paper using the MMFT simulator:
"Accelerated Computational Fluid Dynamics Simulations of Microfluidic Devices by Exploiting Higher Levels of Abstraction" by Michel Takken and Robert Wille (2024)

I am specifically focusing on replicating the results for examples/Hybrid/Continuous/Network 2b, as shown in Figure 6c of the paper. My simulation setup closely follows the description provided in the paper:

Fluid density: 1000 kg/m^3
Fluid dynamic viscosity: 1·10−6 m2/s
Inlet pressure: 1000 Pa
Outlet pressure: 0 Pa
Lattice Boltzmann settings:

theta = 10
epsilon = 0.01
alpha = 0.01
resolution = 20

However, when I visualize the resulting pressure field in ParaView, I am not observing the expected blue low pressure regions that are clearly present in the paper's figure. Instead, my visualization predominantly shows red high pressure areas.
I have thoroughly reviewed my JSON configuration file (Network2b.JSON), and it aligns with the paper's description. Additionally, the ParaView visualization script appears to be correctly set up to map pressure values to a blue-red diverging colormap.

[micheltakken]

Hi Siyona,

Thank you for trying out the simulator!

There doesn't seem to be a problem with your simulation setup, but in order to obtain image results similar to those from the paper, you have to adjust the pressure range you're visualizing in ParaView. Currently you're showing from 0 to 680 Pa, whereas the image in the paper you're (probably) referring to, has a pressure scale from 600 to 730 Pa. This way detailed pressure changes within the computational domain can be visualized.

As a tip, you can cut values below a certain threshold (e.g., 1 Pa) in ParaView to remove the blue background.

Hope this helps!

P.s. The paper you mentioned is authored by Takken and Wille