fluid density

fluid density

[¦flü·əd ¦den·səd·ē]
(fluid mechanics)
The mass of a fluid per unit volume.
References in periodicals archive ?
Tenders are invited for Primary fluid density standard
It also has highly accurate fluid density and concentration determination serving as a product quality indicator, she says.
where [rho] is the fluid density, u is the fluid velocity, and the sound speed is [c.sub.s] = c/[square root of (3)].
The functions are positive for all values of the argument, (which is physical for a fluid density), but such oscillatory profiles are completely unknown in regular fluid mechanics [13].
where [[rho].sub.f] is the fluid density, [c.sub.s] is the sound speed, and [w.sub.i] is the weight coefficient given by
In contrast, in low-density vapors, there is increasing experimental evidence showing that, aside from the fugacity of [HCl.sup.0], the solubility of Cu minerals is controlled primarily by fluid density, which correlates with the fugacity of water.
Liquids can be measured independent of fluid density, temperature and viscosity.
(3) [rho] is the fluid density, A the cross-sectional area of the particle, [c.sub.d] the drag coefficient and v the velocity of the fluid.
The entrapped gas within the oil has been reported to increase the volume of the mixed fluid, and thereby lead to reduced fluid bulk modulus and fluid density [7,16].
The sensitivity is analyzed in three cases with respect to (i) changing fluid longitudinal velocity, while fluid density is kept constant, (ii) changing fluid density, while fluid longitudinal velocity is kept constant, and (iii) changing fluid density and longitudinal velocity with the same step size (given in detail at Table 2); and the results are presented in Figures 4, 5, and 6, respectively, for the three cases.
The fluid is incompressible Newtonian fluid, and the fluid density change satisfied the Boussinesq approximation without heat source; its two-dimensional flow momentum equation and energy equation can be written as follows: