Comparisons as shown in Figure 7 demonstrated that the installation of the double insert
led to an increase of unevenness in distribution of normal pressure at the transition level.
Referred to the results as presented in Figure 6, one can also notice an increase of such
pressures at the commencement of discharge from those at the end of filling. Such
increases are substantial, but would be considered to be limited when compared with the
maximum “switch pressures” that could have occurred if mass flow had achieved.