# Simulation-based Quiz

#### Total number of Questions - 5

Times up!

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.

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

Where on the sphere is the highest wall shear stress located? Use this image as reference to answer this question. The fluid flow is from left to right.

2 / 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.

3 / 5

If the velocity of the fluid at the inlet were doubled, what would be the impact of this change on the overall total drag force experienced by the sphere?

4 / 5

The static pressure distribution on the sphere is shown in the following contour. The highest pressure is marked in red color. The pressure on the sphere surface is high because of ______.
For a Reynolds number (based on the sphere diameter) of $15$, what is the correct range of inlet velocity?