Simulation-based Quiz

Falling Sphere Viscometer

Before starting the exam, please follow the steps outlined below for this part of the certification:

Step 1: Download the zip file containing the instructions and the mesh file needed for the simulation.
Download Zip File
Step 2: Follow the instructions to set up and run the simulation.

Step 3: Go through the 'Results - How to Prepare for the Quiz?' slide to verify you are ready for the test.

If you get stuck, you can skip the current question and navigate between the different questions by using the "Previous" and "Next" buttons.

By clicking on the 'Start' button below you acknowledge that you have finished the simulation as per the instructions provided above and have gone through the steps outlined in the 'Results - How to Prepare for the Quiz?' slide.

1 / 5

Which of the following statements is true? Use the illustration provided to answer this question.

The flow separation occurs between points $4$ and $3$

The flow separation occurs between points $2$ and $3$

The flow separation occurs between points $1$ and $2$

No flow separation occurs in this case

2 / 5

This is a contour plot of wall shear stress. The regions with the lowest wall shear stress are indicated in blue. The reason behind these low shear stress values is:

Local viscosity in these regions is zero

Local velocity gradient in these regions is high

Local fluid velocity in these regions is comparable to the inlet velocity

Local velocity gradient in these regions is low

3 / 5

Which of the following equations is NOT solved for the flow field around the sphere in this simulation?

X- momentum

Continuity

Energy

Y-momentum

4 / 5

In the illustration here, in which region is the wake located? The fluid flow is from left to right.

$2$

$1$

$3$

$4$

5 / 5

Where on the sphere would the static pressure be the highest? Use this image as a reference to answer this question. The fluid flow is from left to right.

$2$

$1$

$4$

$3$

Your score is

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Basics of Fluid Dynamics

Total time - 60 mins.

Total number of Questions - 5