Fluid:
fluid_mean_test_case.dat : mean streamwise fluid velocity and pressure
fluid_rms_test_case.dat : rms of fluid velocities, reynolds shear stress and pressure rms

Particles (note that St=\tau_p^+):
part_VELO_mean.dat: Mean streamwise and wall-normal particle velocities
part_VELO_rms.dat: RMS of particle velocities and cross product
part_VELO_drift.dat: Mean fluid velocity fluctuations at particle position
part_fluid_cova.dat: Fluid-particle covariances
part_concentration: Particle concentration profiles