This directory contains one file, CMP00D01.dat, which is the data from the experiments of Hirota on the turbulent flow in a square duct.  There are headers before each section of the data describing the format.  Overall information follows:
DATA NAME
       Turbulent flow in a square duct

KEY WORDS
       Internal Turbulent Flow, Square Duct, Smooth Wall, 
       Secondary Flow of the Second Kind, Hot-wire Measurement

ARTICLE TITLE
        H. Fujita, M. Hirota, and H. Yokosawa
        Experiments on Turbulent Flow in a Square Duct with a Rough Wall
        Memoirs of the Faculty of Engineering, Nagoya University, Vol. 41,
        No. 2, 280-294 (1990)

ABSTRACT OF EXPERIMENT
            A fully developed turbulent flow in a square duct with four
       smooth walls is measured with hot-wire anemometers.  This data
       file presents the distributions of mean velocities, fluctuating
       velocities, and turbulent shear stresses.  The contours of the
       primary flow veocity are distorted toward the corners of the duct
       owing to the corner oriented secondary currents.  Two secondary
       flow cells are yielded in any given cross-section of the duct.
       The contours of the fluctuating velocities are similar to those
       of the primary flow velocity, except that the concavity of the
       contours toward the dcut corners is quite pronounced.  In the
       contour maps of the turbulent shear stresses, there exist closed
       contours enclosed by a contour of zero-shear stress. 

INSTRUMENTS
            The test duct was straight, with a square cross-section of
       50 x 50 mm, measures 4500 mm in length.  Air was supplied by a
       centrifugal fan to the test duct through an exactly calibrated
       quadrant flow nozzle and a settling chamber.  Normal and X-wire
       hot-wire anemometres were used in measuring the velocity compo-
       nents and the turbulent shear stresses.  A novel technique of
       X-wire anemometry were used to measure the transverse velocity
       components accurately.  The measurements were performed at a
       cross-section of 89.6D downstream from a duct inlet, keeping
       Reynolds number at 65000.        

EXPERIMENTAL PARAMETERS
       Data No.   Measured Variables     
       No. 1      U1/Us 
       No. 2      U1/Us 
       No. 3      U2/Us 
       No. 4      U3/Us 
       No. 5      RMSu1/Us
       No. 6      RMSu1/Us
       No. 7      RMSu2/Us
       No. 8      RMSu2/Us
       No. 9      RMSu3/Us
       No. 10     RMSu3/Us
       No. 11     u1u2/Us^2
       No. 12     u1u2/Us^2
       No. 13     u1u3/Us^2
       No. 14     u1u3/Us^2
       No. 15    tw/tm

       All measured variables are obtained keeping Reynolds number at 
       65000.  The origin of the orthogonal coordinate system is at
       the center of the duct cross-section.  The X1-axis refers the 
       longitudinal axis along the duct center line, the X2- and the 
       X3-axes are the transverse coordinates: the X2-axis is in the
       horizontal direction, and the X3-axis is in the vertical direc-
       tion.  All measured variables given in this data file are those
       obtained in the third quadrant of the duct cross-section, in
       which X2<0 and X3<0.  Transverse coordinates are normalized by
       the half length of the duct side denoted by B (=25 mm).  

MEASURED VARIABLES
       U1: Mean velocity in the X1 direction (Primary flow velocity)
       U2: Mean velocity in the X2 direction (Secondary flow velocity)
       U3: Mean velocity in the X3 directoin (Secondary flow velocity)
       RMSu1: Root mean square of the fluctuating velocity in the X1 direction
       RMSu2: Root mean square of the fluctuating velocity in the X2 directoin
       RMSu3: Root mean square of the fluctuating velocity in the X3 direction
       u1u2, u1u3: Turbulent shear stress
       Us: Primary flow velocity at the center of the duct cross-section
           (normalizing factor of the mean and fluctuating velocities and
            the turbulent shear stresses)
       tw: Local wall shear stress
       tm: Integral mean of the local wall shear stress tw
            (normalizing factor of the local wall shear stress)