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Qaagi - Book of Why

Causes

Effects

its hydraulic characteristicscausefluid friction head loss

by changes in fluid viscosity(passive) caused bychanges in fluid friction

by fluids(passive) caused bya fitted space Fluid Friction Friction

Oil passages too smallcausingtoo much fluid friction

Larger bubbles yield less contact timeare ... influencedas much by fluid friction

Overly thick oilcan causeincreased fluid friction

by the longer path(passive) caused bythe increased fluid friction

Too high viscositycan causehigher fluid friction

Excess greasecausesinternal fluid friction

The equivalent propertycausingfriction in water

flow channelscausingflow friction

by an object moving through a fluid , such as air (passive) caused byFluid friction Friction

an object trying to move the air out of the way as it is moving(passive) is caused byFluid friction

resultant force Friction - types of friction factorsinfluencingthe friction fluid friction

types of friction factorsinfluencingthe friction fluid friction

by the particles that make up air(passive) caused byfluid friction

the loss ... , hole wall and/or partial flowcausedfrom the friction of fluid

the passengers leverwill causefriction flow

by air molecules(passive) caused bya fluid friction

by shearing action of rotor rotation(passive) caused byfluid friction

by the air(passive) caused bythe fluid friction

more bottom end torqueresultsin more fluid friction

by this leakage of compressed oxygen(passive) caused byflow friction

by the surrounding air(passive) caused byfluid friction

factorsinfluencingthe fluid friction

too small and hard anglescausingfluid friction

The trade off ... more bottom end torqueresultsin more fluid friction

by fluids(passive) caused byFluid Friction Friction

passing gas past open valvescausesfluid friction

the heat generatorcausingfluid friction

Excessive torquemay causespread friction

the runners ... more bottom end torqueresultsin more fluid friction

i.e. shearcausingfluid friction

many coil pitchdesignedof friction fluid

by fluids ( gases liquids(passive) caused byFluid Friction Friction

generationresultingfrom fluid friction

gradients normal to the walls ( i.e. shearcausingfluid friction

the incurred lossesresultingfrom fluid friction

by the blocked passages(passive) caused bythe fluid friction

The passages formed by the plurality of platescausefluid friction

to the dissipation of energy as heatleadsto the dissipation of energy as heat

fluid flow(passive) caused byfluid flow

pressure drop , heat generation andcausepressure drop , heat generation and

rubbingcausesrubbing

excessive losses as the turbine becomes too much of an obstructioncausesexcessive losses as the turbine becomes too much of an obstruction

irritabilitycausesirritability

a very thin layer of solution to move more slowly than the bulk solutioncausesa very thin layer of solution to move more slowly than the bulk solution

Linear case(passive) can be set byLinear case

from a decreased surface : volume ratioresultingfrom a decreased surface : volume ratio

from a decreased surfaceresultingfrom a decreased surface

resistance to flowcausesresistance to flow

to flowcausesto flow

Viscosity(passive) is caused byViscosity

Viscosity(passive) is caused by Viscosity

losses(passive) caused bylosses

Viscosity(passive) is caused byViscosity

reduce in flowcausesreduce in flow

The resistance you feel(passive) is caused byThe resistance you feel

The resistance you feel(passive) is caused byThe resistance you feel

the backward pull(passive) caused bythe backward pull

wear and not all that causes wearcauseswear and not all that causes wear

wearcauseswear

spinning of the discscausesspinning of the discs

the earth(passive) is influenced bythe earth

a solid object to slow downcausinga solid object to slow down

the flow to become vortexcausesthe flow to become vortex

to aerodynamic drag , which is a resistance to the forward motion of a body through a fluid ( the aircontributesto aerodynamic drag , which is a resistance to the forward motion of a body through a fluid ( the air

to aerodynamic drag , which is a resistance to the forward motion of a body through a fluid ( the aircontributesto aerodynamic drag , which is a resistance to the forward motion of a body through a fluid ( the air

an increase in loss(passive) caused byan increase in loss

the system pressure ... induced resistance that is the pressure opposed to the desired flow or the resistance by which the fluid encounters flowing through the system(passive) caused bythe system pressure ... induced resistance that is the pressure opposed to the desired flow or the resistance by which the fluid encounters flowing through the system

The head loss ... the effects of fluid velocity , pipe diameter , and surface roughness(passive) caused byThe head loss ... the effects of fluid velocity , pipe diameter , and surface roughness

a pressure drop in fluid(passive) caused bya pressure drop in fluid

surrounding fluid(passive) influenced bysurrounding fluid

The physical resistance to flow(passive) caused byThe physical resistance to flow

wear , and not all that causes wearcauseswear , and not all that causes wear

the heat(passive) caused bythe heat

reduction of headcausesreduction of head

pressure losses in components and associated ductscausespressure losses in components and associated ducts

a system(passive) caused bya system

loss(passive) caused byloss

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