Incompressible Turbulent Airflow Around a Spoiler

Hellow everyone,
I tried “Incompressible Turbulent Airflow Around a Spoiler” simulation from User Guides. I followed all the process as shown in the guideline. But I doesn’t get the expected result. Will anyone please help me in this situation? Here is my project link:
Thank you all.

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Hey Zayed, and welcome to the forum!

Could you please elaborate a bit on how the results differ from expected?