[求助]0~10℃水的密度和运动粘度

xyz

要求准确到小数点三位。

freedomlover

Verwendete formeln:
(1) rho = D(j)
D = a(j) + D*T   {j von 4 bis 0}
a(0) = 999.84102229
a(1) = 0.067477741278
a(2) = -0.0089764830531
a(3) = 0.000088534831535
a(4) = -6.5515551052E-07
(2) rho = rho0 * (1 - p / K) ^ -1
rho0 = Dichte dest. Wasser in g/cm3 rho0 = 0.9998395 + 0.000067914 * T - 0.0000090894 * T * T + 0.00000010171 * T * T * T - 0.0000000012846 * T ^ 4 + 0.000000000011592 * T ^ 5 - 5.0125E-14 * T ^ 6 + (0.0008181-0.00000385 * T + 0.0000000496 * T * T) * S
K = 19652.17 + 148.113 * T * -2.293 * T * T + 0.01256 * T ^ 3 -0.0000418 * T ^ 4 + (3.2726 - 0.0002147 * T + 0.0001128 * T ^ 2) * p + (53.238 - 0.313 * T + 0.005728 * p) * S
(3) rho = 1 / ((1 - p/K) /R)
我只有密度函数

huangzehuacm

a(0)=1.789
a(10)=1.306