Shear Stress and Hemolysis Analysis of Blood Pump under Constant and Pulsation Speed Based on a Multiscale Coupling Model

Table 3

Distribution of shear stress in the blood pump.

Time (T)	Speed (rpm)		Proportion of shear stress (%)
			0–25 Pa	25–50 Pa	50–75 Pa	75–100 Pa	100–125 Pa	>125 Pa
0.15	Amplitude of speed change	2000	96.97	2.41	0.51	0.10	0.01	0.00
		3000	93.50	4.74	1.18	0.41	0.15	0.04
		4000	97.20	2.27	0.44	0.09	0.01	0.00
	Constant speed	7000	95.66	3.79	0.49	0.06	0.00	0.00
0.3	Amplitude of speed change	2000	84.36	8.24	3.47	1.89	0.94	0.51
		3000	74.64	13.37	4.90	2.59	1.72	1.05
		4000	65.25	16.57	7.52	3.74	2.15	1.60
	Constant speed	7000	92.65	5.49	1.29	0.41	0.12	0.03
0.45	Amplitude of speed change	2000	99.53	0.43	0.04	0.00	0.00	0.00
		3000	98.37	1.48	0.14	0.02	0.00	0.00
		4000	98.04	1.86	0.09	0.01	0.00	0.00
	Constant speed	7000	98.68	1.30	0.01	0.00	0.00	0.00
0.8	Amplitude of speed change	2000	99.80	0.17	0.03	0.00	0.00	0.00
		3000	99.76	0.21	0.03	0.00	0.00	0.00
		4000	99.62	0.35	0.04	0.00	0.00	0.00
	Constant speed	7000	98.91	1.00	0.06	0.03	0.00	0.00