The concentration data are given in normalized form according to

with

    c⁺    normalized concentration [-]

    c_m    measured concentration [-]

    H      building height [m]

    U_H    wind velocity at height H [m/s]

    Q_l     emission rate of line source [m²/s]

The normalized concentrations c⁺ have been measured at positions x⁺ = 0.04167 x/H in front of wall A respectively wall B.

The data files (see Data base) containing the concentration data are structured as follows:

Remarks:

• Each data file contains a number of 700 grid points. There is always one file for wall A concentration data and one for wall B (see Data Base)

• For wind directions 90° (perpendicular to street axis) and 0° (parallel to street axis), the symmetric boundary conditions with respect to x-z-plane and y-z-plane, respectively,
  have been utilized. However, in order to assure a higher measurement data quality, concentration measurements at both symmetric positions have been performed.
  The concentration data given in column#3 is the mean concentration of both