Figure 10 ­ - The final solid fat content in test #2 as a function of position in the filter cake. The five triangles denote the simulation results, while the test results are represented by the overlapping symbols. The uncertainty in the simulation data has been estimated from a number of simulations with varying calibration coefficients.
a profile of solid fat content versus position in the cake. Something similar, though for three slices, was done after completion of the pertinent simulation. In the tests in the membrane filter press, the cake was contained between two membranes, while in the simulation there was just a single membrane (at the left-hand side). For the sake of the comparison in Figure 10 the computed profile was mirrored. As expected, the solid fat concentration is minimum in the middle of the cake in both test and simulation. Note that the final thicknesses of the cake in the test (24.3mm) and in the mirrored simulation (2 x 11.4mm) are not exactly the same, since – due to the technicalities mentioned earlier with respect to the start of the expression stage – also the initial cake thicknesses were taken different. Given the experimental inaccuracies and the simplifications of the 1-D model, the difference between the two curves is surprisingly good.