FLUÏDA Flashcards

1
Q

p (hs)

A

hydrostatische druk (druk in vloeistof)

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2
Q

hydraulische lift

A

P1 = P2

F1/A1 = F2/A2

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3
Q

wet van Archimedes

A

elk voorwerp in fluïdum ondervindt F(stuw) = G (verpl vl)

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4
Q

zinken

A

ρ(vw) > ρ(vl)

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5
Q

zweven

A

ρ(vw) = ρ(vl)

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6
Q

drijven

A

ρ(vw) < ρ (vl) => m(vw) = m(verpl vl)

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7
Q

densimeter

A

= aerometer
= hydrometer
=> dichtheid bepalen

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8
Q

bovendruk

A

druk boven p(atm) (systolische)

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9
Q

onderdruk

A

diastolische

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10
Q

laminaire stroming

A

fluïdum stroomt in dezelfde richting (stroomlijnen)

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11
Q

turbulente stroming

A

fluïdum stroomt niet in dezelfde richting (wervelstroom)

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12
Q

stationaire stromen

A

snelheid in elk punt vd ruimte cte in de tijd

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13
Q

continuïteitsvergelijking

A

(behoud van massa)

A.v = cte

’ hoe kleiner de diameter, hoe groter de snelheid’

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14
Q

bloedstroom

A

v = 1,5 mm/s (capillairen

‘bloedsnelheid is hoger bij vernauwing van de vloedvaten’

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15
Q

vergelijking van Bernouilli

A

(behoud van energie)

‘hoe groter de snelheid, hoe groter de druk’

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16
Q

venturibuis

A

(drukverschil meten)

(horizontale buis: h = cte)

17
Q

η

A

viscositeit
= wrijving die vloeistof ondervindt door cohesiekrachten

18
Q

τ

A

afschuifspanning

19
Q

snelheidsgradiënt

A

zie formule afschuifspanning

20
Q

drukgradiënt

A

zie formule debiet

21
Q

Q

A

=volumedebiet