Thus, non linearity of the rheological behavior is not sufficient to induce irreversibility in isothermal flow
studies in a reverse-flow gas turbine combustor" PhD thesis, Indian Institute of Technology, Delhi, December 1997.
All dies are designed on the premise of isothermal flow
For the case of isothermal flow
, by denoting the film thickness as [[delta].
For the experimental conditions of figure 5, calculated maximum pressures, based on a non-Newtonian isothermal flow
in a linear wedge (ref.
To investigate the effect of the geometrical parameters on the flow distribution in the coat-hanger die, Wang (2) studied the influence of the manifold angle and the contour of the cross section of the flow channel on the exit velocity distribution using a three-dimensional (3D) finite element code with isothermal flow
of power law fluids.
The variations of the flow rate with elevation using the fit that matches the isothermal flow
rate at 0.
17), describing isothermal flow
of polymeric melts.
As a consequence, the shear rate of an isothermal flow
is very low so that the Newtonian model can be appropriately applied.
simulations are performed with the finite element method, in which melt flow calculations are simplified with the Hele-Shaw flow approximation.
In order to verify the upwind method we solved the driven cavity problem used widely for benchmarking incompressible isothermal flow
Smith, Tucker and Tortorelli (8, 9) modeled Newtonian and non-Newtonian isothermal flow
in a coat hanger die using a finite element (FE) implementation of the generalized Hele-Shaw 2-dimensional approximation, and optimized the die to minimize pressure drop subject to exit flow uniformity being within a set tolerance.