3D Unsteady Flow: approximation to Ekman layer
(P.R. Spalart, J.Fluid Mech. 205, 319)
Free-stream velocity components are U,inf = U,0 cos(ft)
and W,inf = U,0 sin(ft). U and W (and all six
Reynolds stresses) are non-zero, but are functions of y and t only,
not of x and z (so V = 0 by continuity). A program capable of computing
steady flow over infinite swept wings (z coordinate along generators
and d[ ]/dz=0) could be adapted: Ud[ ]/x becomes d[ ]/dt; Vd[ ]/dy
and Wd[ ]/dz are zero - for different reasons - and the program can be
stepped in time instead of marching in x.

Notation is explained in the JFM paper, especially para. 3.1:
the defining Reynolds number, Rl, is U,0 [2/(f*nu)]^(1/2)
where f is in rad/sec not Hz: it is independent of time.
The length scale,delta = (Utau)/f, is quite close to the
physical thickness: y- = y/delta. Rt = (Utau)*(delta)/nu. Phi0 (phi* in
the JFM paper, eq. 18) is related to the direction of the surface shear
stress, alpha = lim tan^1 (W/U) by eq. 18: it is not relevant to the
computations.

 Rl            Utau     Phi0      Rt 
 766.51428   0.05580   0.30867 914.74451


=== Part 3 ===
  RMS, FIG 12: U+, V+, W+
  0.0000e+00  0.7613e-11  0.8396e-11  0.4266e-11
  0.1426e-03  0.4983e-01  0.2268e-03  0.3301e-01
  0.4782e-03  0.1650e+00  0.2072e-02  0.1053e+00
  0.1006e-02  0.3454e+00  0.8532e-02  0.2092e+00
  0.1726e-02  0.5898e+00  0.2278e-01  0.3337e+00
  0.2640e-02  0.8922e+00  0.4741e-01  0.4666e+00
  0.3747e-02  0.1237e+01  0.8346e-01  0.5980e+00
  0.5049e-02  0.1595e+01  0.1304e+00  0.7209e+00
  0.6546e-02  0.1927e+01  0.1867e+00  0.8317e+00
  0.8240e-02  0.2199e+01  0.2502e+00  0.9299e+00
  0.1013e-01  0.2393e+01  0.3185e+00  0.1016e+01
  0.1223e-01  0.2509e+01  0.3893e+00  0.1091e+01
  0.1452e-01  0.2557e+01  0.4599e+00  0.1156e+01
  0.1702e-01  0.2552e+01  0.5284e+00  0.1211e+01
  0.1972e-01  0.2511e+01  0.5930e+00  0.1256e+01
  0.2263e-01  0.2446e+01  0.6525e+00  0.1292e+01
  0.2575e-01  0.2367e+01  0.7060e+00  0.1318e+01
  0.2908e-01  0.2280e+01  0.7530e+00  0.1336e+01
  0.3263e-01  0.2191e+01  0.7931e+00  0.1346e+01
  0.3639e-01  0.2101e+01  0.8266e+00  0.1352e+01
  0.4038e-01  0.2016e+01  0.8537e+00  0.1354e+01
  0.4460e-01  0.1939e+01  0.8745e+00  0.1354e+01
  0.4904e-01  0.1871e+01  0.8898e+00  0.1353e+01
  0.5372e-01  0.1814e+01  0.8999e+00  0.1352e+01
  0.5863e-01  0.1766e+01  0.9053e+00  0.1349e+01
  0.6379e-01  0.1725e+01  0.9069e+00  0.1344e+01
  0.6920e-01  0.1690e+01  0.9055e+00  0.1337e+01
  0.7486e-01  0.1660e+01  0.9019e+00  0.1326e+01
  0.8077e-01  0.1632e+01  0.8970e+00  0.1313e+01
  0.8696e-01  0.1607e+01  0.8913e+00  0.1300e+01
  0.9341e-01  0.1581e+01  0.8850e+00  0.1289e+01
  0.1001e+00  0.1554e+01  0.8783e+00  0.1280e+01
  0.1072e+00  0.1524e+01  0.8711e+00  0.1270e+01
  0.1145e+00  0.1492e+01  0.8638e+00  0.1259e+01
  0.1221e+00  0.1459e+01  0.8576e+00  0.1245e+01
  0.1300e+00  0.1426e+01  0.8523e+00  0.1230e+01
  0.1383e+00  0.1393e+01  0.8467e+00  0.1217e+01
  0.1469e+00  0.1362e+01  0.8407e+00  0.1207e+01
  0.1558e+00  0.1327e+01  0.8360e+00  0.1198e+01
  0.1651e+00  0.1292e+01  0.8331e+00  0.1193e+01
  0.1748e+00  0.1257e+01  0.8307e+00  0.1192e+01
  0.1849e+00  0.1221e+01  0.8271e+00  0.1190e+01
  0.1953e+00  0.1176e+01  0.8207e+00  0.1188e+01
  0.2062e+00  0.1126e+01  0.8100e+00  0.1183e+01
  0.2175e+00  0.1072e+01  0.7950e+00  0.1172e+01
  0.2293e+00  0.1013e+01  0.7770e+00  0.1153e+01
  0.2416e+00  0.9559e+00  0.7576e+00  0.1127e+01
  0.2543e+00  0.9045e+00  0.7372e+00  0.1097e+01
  0.2676e+00  0.8584e+00  0.7147e+00  0.1070e+01
  0.2815e+00  0.8222e+00  0.6881e+00  0.1048e+01
  0.2960e+00  0.7954e+00  0.6598e+00  0.1024e+01
  0.3110e+00  0.7751e+00  0.6333e+00  0.9966e+00
  0.3268e+00  0.7555e+00  0.6119e+00  0.9599e+00
  0.3433e+00  0.7334e+00  0.5979e+00  0.9136e+00
  0.3605e+00  0.7148e+00  0.5888e+00  0.8602e+00
  0.3786e+00  0.7016e+00  0.5801e+00  0.8064e+00
  0.3975e+00  0.6872e+00  0.5667e+00  0.7612e+00
  0.4174e+00  0.6588e+00  0.5440e+00  0.7217e+00
  0.4383e+00  0.6243e+00  0.5122e+00  0.6826e+00
  0.4603e+00  0.5928e+00  0.4820e+00  0.6455e+00
  0.4836e+00  0.5479e+00  0.4579e+00  0.6028e+00
  0.5082e+00  0.4994e+00  0.4365e+00  0.5495e+00
  0.5343e+00  0.4702e+00  0.4174e+00  0.5050e+00
  0.5620e+00  0.4598e+00  0.3999e+00  0.4762e+00
  0.5916e+00  0.4542e+00  0.3850e+00  0.4423e+00
  0.6232e+00  0.4343e+00  0.3743e+00  0.4012e+00
  0.6572e+00  0.4080e+00  0.3631e+00  0.3618e+00
  0.6939e+00  0.3914e+00  0.3411e+00  0.3238e+00
  0.7337e+00  0.3665e+00  0.3055e+00  0.2982e+00
  0.7772e+00  0.3270e+00  0.2697e+00  0.2739e+00
  0.8251e+00  0.2695e+00  0.2329e+00  0.2299e+00
  0.8783e+00  0.1883e+00  0.1815e+00  0.1735e+00
  0.9381e+00  0.1130e+00  0.1258e+00  0.1046e+00
  0.1006e+01  0.6843e-01  0.8009e-01  0.6028e-01
  0.1086e+01  0.4466e-01  0.5070e-01  0.3990e-01
  0.1180e+01  0.2544e-01  0.3511e-01  0.2558e-01
  0.1297e+01  0.1973e-01  0.2395e-01  0.2180e-01
  0.1451e+01  0.1672e-01  0.2132e-01  0.1586e-01
  0.1674e+01  0.1119e-01  0.1691e-01  0.1241e-01
  0.2088e+01  0.6449e-02  0.9765e-02  0.6177e-02