The phrase "abrupt contraction" is correct and usable in written English.
It can be used to describe a sudden or unexpected decrease in size, volume, or intensity, often in a scientific or technical context.
Example: "The abrupt contraction of the material under extreme pressure led to unexpected results in the experiment."
Alternatives: "sudden shrinkage" or "rapid decrease".
We present a new algorithm to simulate unsteady viscoelastic flows in abrupt contraction channels.
The geometry is axi-symmetric abrupt contraction pipe with a pipe protrusion embedded in it.
Using this method we simulate extrudate swell in planar and axisymmetric extrusion with abrupt contraction ahead of the die exit.
Thus, directly and indirectly, the failure of such an institution will damage the real economy through an abrupt contraction in credit availability.
That contrasts with the situation in the United States, where figures collected by the Federal Reserve have shown an abrupt contraction of credit since August.
Satisfactory results converging toward steady-state regimes have been obtained for the flow through a four-to-one planar abrupt contraction with unsteady algorithms.
These cells probably facilitate rapid responses such as abrupt contractions of the anterior trunk when the proboscis is touched.
However, in more abrupt contractions, the extensional flow behaviour dominates the shear-thinning effects: first attaining a Newtonian equivalent value (producing an epd of one), and then, showing values larger than unity as the contraction-ratio becomes more severe.
This capability appears to be crucial for the computation of rating curves on coarse grids as it allows the modeling of abrupt contractions and jumps in bed bottom elevations, which often occur near cross-sections where stage measuring gauges are installed.
Abrupt expansion or contraction of closed internal air spaces can injure or rupture surrounding tissues, such as the eardrum.
A detailed study has been performed to generate the profiles of velocity, pressure and volume fraction over a wide range of oil and water velocities for an abrupt expansion and contraction.
