Experimental and Computational Investigation of the IDDSI Flow Test of Liquids Used in Dysphagia Management

Table 3 Summary results from CFD simulation at maximum flow velocity, measured 1 s after the start of the test.

IDDSI level	Glycerol/ water	Starch	Gum
(A) Maximum velocity in the Barrel (mm/s)
1	12.0	12.5	13.2
2	5.90	5.10	6.55
3	1.80	0.92	0.33
(B) Maximum velocity at the exit section of Nozzle (mm/s)
1	695	737	746
2	372	350	432
3	116	63.8	17.8
(C) Maximum shear rate in the Barrel (1/s)
1	3.30	4.60	9.32
2	1.60	2.45	7.12
3	0.50	0.51	0.30
(D) Maximum shear rate at the exit section of Nozzle (1/s)
1	1790	2710	7400
2	833	1180	3880
3	258	233	185