Preview Questions Aerodynamics Engineer | Role Specific Skill

Question 1: What is the role of a flux limiter in CFD schemes?

Which action should you take?

Choose only one option

To prevent unphysical oscillations

To improve boundary layer adhesion

To stabilize numerical methods

To reduce computation time

Question 2: How does the rear windshield angle of a vehicle affect the drag coefficient (Cd) and lift at high speeds?

Which action should you take?

Choose only one option

A flatter angle reduces drag and lift

A steeper angle increases drag and lift

A flatter angle increases drag but reduces lift

A steeper angle reduces drag but increases lift

Question 3: What is the effect of vehicle shape on drag force at low speeds compared to high speeds?

Which action should you take?

Choose only one option

Shape has no effect on drag at low speeds

At low speeds, drag is less sensitive to shape compared to high speeds

The vehicle shape only affects drag at high speeds

Vehicle shape affects drag at all speeds equally

Question 4: Why is flow visualization (using smoke or tufts) important in wind tunnel testing for automotive aerodynamics?

Which action should you take?

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It helps to visualize flow patterns, separation, and vortex formation

It speeds up the test by reducing the need for pressure measurement

It reduces computational errors in simulations

It decreases turbulence near the vehicle surface

Question 5: Which type of flow is most desirable around the rear of a vehicle to minimize drag?

Which action should you take?

Choose only one option

Attached flow

Turbulent

Laminar

Separated

Question 6: In wind tunnel testing, why is a scale model of the vehicle used instead of a full-size model?

Which action should you take?

Choose only one option

To ensure real-world flow patterns

To improve accuracy by reducing Reynolds number

To save space and reduce cost

To avoid the effects of tunnel boundary layers