![]() Temperature and Pressure TemperatureĬentipoise, gram/(centimetre second) = poise, kilogram/metre second =newton second/square metre = pascal second, pound/(foot hour) , pound/(foot second), reyn Water - Dynamic (Absolute) and Kinematic Viscosity vs. One figure showing relative viscosity with variations in pressure and temperature is also included. The figures and tables below shows how water viscosity changes with temperature (☌ and ☏) at water saturation pressure (which for practicle use, gives the same result as atmospheric pressure at temperatures < 100 ☌ (212☏)). See also dynamic and kinematic viscosity of air, ammonia, benzene, butane, carbon dioxide, ethane, ethanol, ethylene, methane, methanol, nitrogen, oxygen and propane See also other properties of Water at varying temperature and pressure : Boiling points at high pressure, Boiling points at vacuum pressure, Density and specific weight, Enthalpy and entropy, Heat of vaporization, Ionization Constant, pK w, of normal and heavy water, Melting points at high pressure, Prandtl number, Properties at Gas-Liquid Equilibrium Conditions, Saturation pressure, Specific gravity, Specific heat (heat capacity), Specific volume, Thermal conductivity, Thermal diffusivity and Vapour pressure at gas-liquid equilibrium. See Water and Heavy Water - thermodynamic properties. Note! Temperature must be within the ranges 0-370 ☌, 32-700 ☏, 273-645 K and 492-1160 °R to get valid values. While the kinematic viscosity is given as cSt, m 2 /s, and ft 2 /s The output dynamic viscosity is given as cP, mPa*s, Pa*s, N*s/m 2 ,lb f *s/ft 2 and lb m /(ft*h), The calculator below can be used to calculate the liquid water dynamic or kinematic viscosity at given temperatures. Absolute or dynamic viscosity is used to calculate Reynold's Number to determine if a fluid flow is laminar, transient or turbulent. ![]() įor further definitions, go to Absolute (dynamic) and kinematic viscosity. head in feet of water (ft h2o).The viscosity of a fluid is a measure of its resistance to gradual deformation by shear stress or tensile stress. Pressure in pounds per square inch (psi) vs. Water - Density, Specific Weight and Thermal Expansion Coefficientsĭefinitions, online calculator and figures and tables with water properties like density, specific weight and thermal expansion coefficient of liquid water at temperatures ranging 0 to 360☌ (32 to 680☏). Pressure acting on underground pipes due to weight of soil and transport.įlow rate or discharge in an open conduit, channel or river can be calculated with the velocity-area principle. Static pressure graphical presentation throughout a fluid flow system.Ĭonvert between pressure units like Pa, bar, atmosphere, pound square feet, psi and more.Ĭonverting head (ft or m) to pressure (psi or bar, kg/cm2) and vice versa. Introduction to pressure - online pressure units converter. Hydrostatic Force acting on Submerged SurfaceĬalculate the thrust force acting on a submerged surface. Pascal's law and the hydraulic force acting in fluids. Involving velocity, pressure, density and temperature as functions of space and time.įorces acting on bodies submerged in fluids.īuoyancy is the resultant force acting on a submerged body. Ocean pressure varies with depth and position (latitude) on earth. ![]() The pressure acting in water at 3 ft can be calculated as The density of water at 32 o F is 1.940 slugs/ft 3. = 9810 Pa Example - Pressure acting in water at depth 3 ft The pressure acting in water at 1 m can be calculated as ![]() The density of water at 4 o C is 1000 kg/m 3. Water Depth Height of Water ColumnĮxample - Pressure acting in water at depth 1 m Hydrostatic pressure in a water column - or depth ( density of water 1000 kg/m 3 ): Hydrostatic Pressure vs. H = height of fluid column - or depth in the fluid where pressure is measured (m, ft) Ρ = density of liquid (kg/m 3, slugs /ft 3 ) P = pressure in liquid (N/m 2, Pa, lb f /ft 2, psf) Hydrostatic pressure in a liquid can be calculated as ![]()
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