fluid
substance which continuously deforms under an applied shear stress, including liquids and gases
working fluid
gas or liquid used to transfer force, motion, or mechanical or thermal energy
Heat-transfer fluid
fluid that transports and stores thermal energy
acidulated water
water with acid added
Fire protection fluid
water-like fluid to suppress fires
thermal grease
fluid material squeezed between parts to keep them in close thermal contact
exudate
fluid emitted through pores or a wound
slurry
thin sloppy mud or cement or, in extended use, any fluid mixture of a pulverized solid with a liquid (usually water), often used as a convenient way of handling solids in bulk
gas
fundamental state of matter in which constituent particles are widely separated with weak intermolecular bonds
Newtonian fluid
fluid in which the viscous stresses arising from its flow, at every point, are linearly proportional to the local strain rate—the rate of change of its deformation over time; the simplest mathematical model of fluid that account for viscosity
barotropic fluid
fluid whose density is a function of pressure only
Formation fluid
Liquids and gases contained in geologic formations
liquid
nearly incompressible fluid that conforms to the shape of its container but retains a nearly constant volume independent of pressure
magma
mixture of molten or semi-molten rock, volatiles and solids that is found beneath the surface of the Earth
non-Newtonian fluid
fluid that does not follow Newton's Law of Viscosity, viscosity (the measure of a fluid's ability to resist gradual deformation by shear or tensile stresses) of non-Newtonian fluids is dependent on shear rate or shear rate history
drilling fluid
Aid for drilling boreholes into the ground
Gunge
gooey substance often used as a prank on television
second-order fluid
fluid where stress depends on the second derivative of the velocity field
filtrate
fluid that passes through the filter