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Qaagi - Book of Why

Causes

Effects

an adverse pressure gradient ... not enoughto causesignificant boundary - layer separation

an adverse pressure gradient but not enoughto causesignificant boundary - layer separation

some roughness in certain locationsto causeboundary flow separation

adverse pressure gradientscauseboundary layer separation from their surfaces

by the drop - off(passive) caused byThe intentional boundary layer separation

an impulsively stretching plate and a coupled four - equation system that models the problem of unsteady MHD flow and mass transfer in a porous space(passive) caused byboundary layer flow

by stretching(passive) caused byboundary separation

conditions of separation in transonic flow ... shock wave and boundary layercan causeboundary layer separation

a strong effect on the flow dynamics ... are observedto causeboundary layer separation

the pressure rise at the shock ... sufficientto causeseparation of the laminar boundary layer

7 Boundary layer separation from a cylinder : flow left to rightcausesThe separation of the boundary layer

a strong shock present at the upper surface of the conventional airfoilto causea boundary layer separation

by the strong adverse pressure gradient of the shock(passive) caused byboundary layer separation

the appearance of a strong shock on the upper surface of the airfoilcausesboundary layer separation

a finite - core vortexleadingto unsteady separation in a boundary layer

presence of adverse pressure gradient(passive) is caused bySeparation of boundary layer

Viscous effects within the boundary layercauseboundary layer separation

by the adverse pressure gradients(passive) caused byboundary layer separation

adverse pressure gradientscauseboundary layer separation

an adverse pressure gradient ... in turncausesseparation of the boundary layer

a strong shockcausingboundary layer separation

the presence of strong shock wavescould causeboundary layer separation

the flow over the profileleadto boundary layer separation

the wallresultsin boundary - layer separation

The viscosity of the fluidcausesthe boundary layer separation

an adverse pressure gradient ... in partcausethe boundary layer separation

an adverse pressure gradientleadingto boundary layer separation

adverse pressure gradientcan leadto boundary layer separation

by the adverse pressure gradient(passive) provoked bythe boundary layer separation

an adverse pressure gradientcan causeboundary layer separation

an adverse pressure gradientcausesboundary layer separation

an armor onto a screenshot from the gamesetlayer boundary

place ... this pointcan leadto boundary layer separation

this pointcan leadto boundary layer separation

regions of adverse pressure gradientcan leadto boundary layer separation

a conditionleadsto boundary layer separation

by Reynolds number(passive) strongly influenced byboundary layer separation

the Reynolds numberinfluencesboundary layer separation

a shock wave / turbulent boundary layer interactionleadsto boundary layer separation

strong shock wavescould causeboundary layer separation

in form dragresultingin form drag

a turbulent wakecausinga turbulent wake

the dispersion of the pollutantsinfluencethe dispersion of the pollutants

misaligned flow(passive) caused bymisaligned flow

to cyst formationleadsto cyst formation

pressure drag(passive) caused primarily bypressure drag

in an improvement of the free volume of the separation layerresultedin an improvement of the free volume of the separation layer

in ridiculously erroneous snowfall mapsresultingin ridiculously erroneous snowfall maps

in a layer - separated structureresultsin a layer - separated structure

of a plasma polymer layercomposedof a plasma polymer layer

to lift - off failures if it is too large or too lowleadsto lift - off failures if it is too large or too low

to transition andleadsto transition and

in aerodynamic instabilities affecting repeatability and consistency of wind speed measurementresultingin aerodynamic instabilities affecting repeatability and consistency of wind speed measurement

to failure of the articlecould leadto failure of the article

from cell collapse and disintegrationresultsfrom cell collapse and disintegration

in artifacts in the display image , such as undesirable bright lines in the display imagewould resultin artifacts in the display image , such as undesirable bright lines in the display image

large energy losses and strong adverse pressure gradientscauseslarge energy losses and strong adverse pressure gradients

from a tendency of the product to stick to the other die as the dies are separated from one anotherresultsfrom a tendency of the product to stick to the other die as the dies are separated from one another

to a reduction in turbulence and frictional dragleadingto a reduction in turbulence and frictional drag

the side forcecausesthe side force

in increased dragresultsin increased drag

all the limitations(passive) set byall the limitations

in a smaller wakeresultsin a smaller wake

meltingto causemelting

Sika levelling and/or(passive) are designedSika levelling and/or

air - flow over aircraft surfacesInfluencingair - flow over aircraft surfaces

in decrease of pressure dragresultingin decrease of pressure drag

from a source of momentum and buoyancy Boundary layeroriginatingfrom a source of momentum and buoyancy Boundary layer

an INCREASE in dragcausesan INCREASE in drag

stall resulting in a low efficiencycan causestall resulting in a low efficiency

a large pressure difference forming the wake flow of the cylindercausesa large pressure difference forming the wake flow of the cylinder

in a reduction in dragresultsin a reduction in drag

the associated rise in aerodynamic drag(passive) caused bythe associated rise in aerodynamic drag

the flow(passive) caused bythe flow

aerodynamic drag(passive) caused byaerodynamic drag

drag(passive) caused bydrag

to negative aerodynamic dampingleadsto negative aerodynamic damping

lift(passive) caused bylift

turbulent fluid(passive) caused byturbulent fluid

the turbulent airflow(passive) caused bythe turbulent airflow

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