array of square cylinders

Hi Dear All,
Can any of my friend know some papers about square cylinders in in-line configurations. I mean four cylinders in the form of two rows and two columns or nine square cylinders in three rows and three columns. I search a lot but i not find such papers from open literature that they disscus about square cylinder more than two.
If any one can know such paper and mention the link or paper names that;s will be highly appreciated.
Thanks in advance.

You can check chapter4 section 1 of this thesis: