Dear CFDers,

i'm new in CFD and am tryiing to replicate the case 2-D unsteady of this article https://link.springer.com/chapter/10.1007/978-3-322-89849-4_39 

The flow develops qualitativaly fine but the results for drag and lift coeficients are very discrepant. Drag and lift forces are way too small.

Set a "new liquid" with rho=1kg/m3 and mi=0.001Pa*s (nu=0.001m2/s), as in the article. And set the bondary as 2-D, inlet as 1.5m/s fully developed, walls as real, and outlet as total pressure as 101325Pa 273.2K. Set Drag force as Force in Z axis and Lift as Force in Y axis. Made a grid as 351,834 Fluid cells and 26,868 Fluid cells contacting solids.

Please, any suggestions would be very helpful.

Thanks in advance.