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Water – as pure incompressible water with constant heat capacity without any substance inside

Air – as an ideal gas model with oxygen, carbon dioxide, nitrogen and water

Blood – as an incompressible fluid containing many physiological substances such as blood gases, electrolytes, red cells, nutrients, proteins and hormones. Thanks to the shift of numerical tolerances with predefined nominal values for each substance, the calculation is numerically stable, even if the ratio between the mass fractions of substances is 10^9 (e.g. mass fraction of water / mass fraction of thyrotropin). Blood contains equations for haemoglobin oxygen saturation, acid-base balance, and carbon dioxide transfers to achieve physiological conditions in the transport of blood gases under variable conditions (Mateják, Kulhánek, and Matoušek 2015).

BodyFluid – as an incompressible fluid that simplifies other physiological fluids such as interstitial fluid, intracellular fluid, cerebrospinal fluid, or urine. In Physiolibrary 3.0 this medium represents only a homogeneous chemical solution without special transfers or binding of substances inside.

Contents

NameDescription
BloodBlood
WaterIncompressible water with constant heat capacity
Air
BodyFluidSimplified Human body fluid
Interfaces
Substances
InitialValues

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