AA W1 - BL Thickness

AA W1 - BL Thickness

University

10 Qs

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AA W1 - BL Thickness

AA W1 - BL Thickness

Assessment

Quiz

Physics

University

Practice Problem

Medium

Created by

Stephanie Docherty

Used 1+ times

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10 questions

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1.

MULTIPLE CHOICE QUESTION

20 sec • 5 pts

The viscosity of a fluid is:

The mass of the fluid per unit volume.
A measure of the fluid’s resistance to flow.
The force exerted by a fluid on a surface per unit area.
A measure of the kinetic energy of the fluid molecules.

2.

MULTIPLE CHOICE QUESTION

20 sec • 5 pts

The units of dynamic viscosity are:

kg/s

kg/m3

m2/s

kg/ms

3.

MULTIPLE CHOICE QUESTION

20 sec • 5 pts

A boundary layer forms at a surface due to:

Shear stresses in the fluid.
Normal pressures acting on the surface.

4.

MULTIPLE CHOICE QUESTION

20 sec • 5 pts

Ignoring viscous effects will result in:

Inaccurate predictions of pressure drag only.
Inaccurate predictions of skin friction drag only.
Inaccurate predictions of skin friction drag, pressure drag, and lift.
Inaccurate predictions of lift only.

5.

MULTIPLE CHOICE QUESTION

20 sec • 5 pts

As viscous flow transitions from laminar to turbulent, the boundary layer thickness will:

Stay the same.
Increase.
Decrease.

6.

MULTIPLE CHOICE QUESTION

20 sec • 5 pts

The effects of viscosity are often negligible outside the boundary layer.

True
False

7.

MULTIPLE CHOICE QUESTION

20 sec • 5 pts

The edge of the boundary layer is defined as the point at which the fluid velocity equals what % of the freestream velocity?

100%

90%

99%

95%

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