We can use it to estimate the airflow resistance in human airways. Air viscosity at ambient temperature What is the viscosity of air The viscosity of air, at atmospheric pressure is the following : Air viscosity at 0c 0.01722 mPa.s Air viscosity at 25c 0.0186 mPa.s 2. You can use this equation when estimating blood flow in blood vessels, and to describe the different processes in the human body that involve fluids (in that case the Poiseuille's law equation acts as a blood flow equation) Humans, however, are indeed creative creatures: You guessed right - the Poiseuille's law can be used in plumbing, since pipes are involved (flow resistance equation). The Air Viscosity Calculator can be used to quickly estimate viscosity of air in centipoise for the specified temperature and pressure conditions. k is thermal conductivity, (SI units: W/m·K) cp is specific heat, (SI units: J/kg·K) is density, (SI units: kg/m3). The calculator below can be used to calculate air dynamic or kinematic viscosity at given temperatures and atmospheric pressure. Since we already know what Poiseuille's equation is, it's time to find out when we have to use it. is dynamic viscosity, (SI units: Pa s N s/m2).
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