Nano Hydrostatic Library

Feature

• Compute the density of solids made of heterogeneous materials
• Compute the buoyancy of heterogeneous solids fully immersed in seawater

The library uses the International System of Units. The buoyancy and mass are expressed in kg, the density in kg•m^-3, the volume in m^-3 and temperature in °C.

The buoyancy in seawater is computed based on the seawater density model described in: Sharqawy, Mostafa H., John H. Lienhard V and Syed M. Zubair. "The thermophysical properties of seawater: A review of existing correlations and data." Desalination and Water Treatment, 16 (April 2010) 354–380.

The paper is available on MIT Open Access and usable according to Creative Commons by-nc-sa license. The Equation implemented is the Eq. (8) (referenced in the paper) without modification.

The model is valid for a temperature range 0 < t < 180 °C and salinity range 0 < s < 0.16 kg/kg with a ±0.1% accuracy.

Getting the library

TBD

Using the library

Once the library is accessible in your classpath, you shall use the SolidFactory factory to build solids as required.

The example below shows the creation of a solid composed of 1 m^3 with density 1000 kg•m^-3 and 0.1 m^3 with density 1500 kg•m^-3.

Solid<BigDecimal> solid = new SolidBuilder()
    .add(big("1"), big("1000"))
    .add(big("0.1"), big("1500"))
    .build();

The mass and volume of this solid can be computed like the following:

solid.mass();
solid.volume();

In order to compute the buoyancy of the solid fully immersed in seawater at 20.5°C with salinity 0.08 kg/kg, the liquid model must be built as below:

Liquid<BigDecimal> seaWater = SaltedLiquidFactory.build(big("0.08"));

Then compute the buoyancy as below:

solid.buoyancy(seaWater.density(big("20.5")));

The library uses java.math.BigDecimal for its implementation, you may static import the method org.wildbits.hydro.utils.Utils#big as a syntactic sugar making building BigDecimal instances easy.