In this section it is compared the data obtained from the new version of Ledaflow 1.3 to the experimental data acquired at IMFT published by **J.Fabre and L.L. Peresson 1987. **The test loop consist of a 25 m horizontal pipe connected to a 13.5 m vertical riser as shown in figure 1. The diameter of the pipe is 0.053 m. Air and water are the fluid used, and the test loop operates under the atmospheric end pressure. The conditions and geometry data are given in Table 1.

Table 1

Figure 1

In order to download the full updated tutorial (12/03/2014) of the new version 1.3 of Ledaflow, click here.

Figure 2 shows the comparison between the predicted pressure tend at the bottom of the riser by the new version 1.3 of Ledaflow and the **J.Fabre and L.L. Peresson.**

Figure 2

From the previous figure, the pressure amplitude found by Ledaflow is approximately the same as the experimental result but the predicted period is just a little bit longer.

Therefore, we can validate the results found by the new version 1.3 of Ledaflow.