We analyze V -band photometry of the aperiodic variability in T CrB .
By applying a simple idea of angular momentum transport in the accretion disc , we have developed a method to simulate the statistical distribution of flare durations with the assumption that the aperiodic variability is produced by turbulent elements in the disc .
Both cumulative histograms with Kolmogorov-Smirnov tests , and power density spectra are used to compare the observed data and simulations .
The input parameters of the model R _ { in } and \alpha are correlated on a certain interval and the most probable values are an inner disc radius of R _ { in } \simeq 4 \times 10 ^ { 9 } cm and a viscosity of \alpha \simeq 0.9 .
The disc is then weakly truncated .
We find that the majority of turbulent events producing flickering activity are concentrated in the inner parts of the accretion disc .