Kinematic Viscosity - CivilWeb Spreadsheets

Kinematic Viscosity (v) (m²/s)

The Kinematic Viscosity of a liquid measures its resistance to flow under gravity. It is largely dependent on the temperature of the liquid. The British Standards advise that a water temperature of 15°C will be sufficient for most applications. The kinematic viscosity has only a small impact on the flow, so it is not usually required to calculate flow at different temperatures.

Design Values;

Water Temperature (°C)	Kinematic Viscosity (mm²/s)
2	1.6736
3	1.6191
4	1.5674
5	1.5182
6	1.4716
7	1.4272
8	1.3849
9	1.3447
10	1.3063
11	1.2696
12	1.2347
13	1.2012
14	1.1692
15	1.1386
16	1.1092
17	1.0811
18	1.0541
19	1.0282
20	1.0034
21	0.9795
22	0.9565
23	0.9344
24	0.9131
25	0.8926
26	0.8729
27	0.8539
28	0.8355
29	0.8178
30	0.8007
31	0.7842
32	0.7682
33	0.7528
34	0.7379
35	0.7234
36	0.7095
37	0.6959
38	0.6828
39	0.6702
40	0.6579
45	0.6017
50	0.5531
55	0.5109
60	0.474
65	0.4415
70	0.4127
75	0.3872
80	0.3643

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