[zhang-qiang]

I am learning the tutorial: TestCases/incomp_navierstokes/bend, and the printed information is:

Simulation Run using the Single-zone Driver
+----------------------------------------------------------------+
| Inner_Iter| rms[P]| rms[U]| CL| CD|
+----------------------------------------------------------------+
| 0| -2.382554| -16.581105| 0.000000| 0.000000|
| 1| -2.522488| -1.896718| 0.000000| 0.000000|
| 2| -2.655079| -2.244733| 0.000000| 0.000000|
| 3| -2.589785| -2.523275| 0.000000| 0.000000|
| 4| -2.891179| -2.722327| 0.000000| 0.000000|
| 5| -3.306787| -2.959667| 0.000000| 0.000000|
| 6| -3.414430| -3.092187| 0.000000| 0.000000|
| 7| -3.491685| -3.079000| 0.000000| 0.000000|
| 8| -3.506499| -3.109794| 0.000000| 0.000000|
| 9| -3.502077| -3.107762| 0.000000| 0.000000|
| 10| -3.501823| -3.121293| 0.000000| 0.000000|

How to understand the parameters rms[P], rms[U], CL, CD? Does the [P] means pressure? What's the meaning of [U], CL, CD?

Any suggestion is appreciated~~~