material.hpp

#pragma once
 
class Material
{
public:
    constexpr Material(
            const double conductivity,
            const double density,
            const double heatCapacity):
        m_conductivity(conductivity),
        m_density(density),
        m_heatCapacity(heatCapacity)
    {}
 
    // read-only
    double conductivity() const { return m_conductivity; } 
    double density() const { return m_density; } 
    double heatCapacity() const { return m_heatCapacity; } 
 
    // initialized below
    static const Material concrete; 
    static const Material steel; 
    static const Material coating; 
    static const Material soil; 
    static const Material seawater; 
    static const Material air; 
 
protected:
    double m_conductivity; 
    double m_density; 
    double m_heatCapacity; 
};
 
constexpr inline Material Material::concrete = Material( 2.9,    3400,   650);
constexpr inline Material Material::steel    = Material(50,      7800,   590);
constexpr inline Material Material::coating  = Material( 0.74,   1300,  1900);
constexpr inline Material Material::soil     = Material( 2,      2000,  1000); // water saturated sand
 
constexpr inline Material Material::seawater = Material( 0.571,  1020,  4187);
constexpr inline Material Material::air      = Material( 0.0257, 1.225, 1012);