Figure 6. Flow behavior of extruded (16% moisture, 175°C and 150 rpm) and unextruded corn starch at 6% concentration and 60°C (84).

neers and rheologists. The two methods used to measure primary normal stress difference are the exit pressure method and the hole-pressure method. Exit pressure is the residual stress at the die exit. For inelastic fluid this pressure is zero, but positive for a viscoelastic fluid. Hole pressure is defined as the difference between the pressure measured by a flush-mounted transducer and a transducer located at the bottom of a slot directly opposite to it (Fig. 7). For a Newtonian fluid, under creeping flow conditions (Reynolds number ~ 0), the hole pressure is zero.

Sleeping Sanctuary

Sleeping Sanctuary

Salvation For The Sleep Deprived The Ultimate Guide To Sleeping, Napping, Resting And  Restoring Your Energy. Of the many things that we do just instinctively and do not give much  of a thought to, sleep is probably the most prominent one. Most of us sleep only because we have to. We sleep because we cannot stay awake all 24 hours in the day.

Get My Free Ebook

Post a comment