Preview Questions Aerodynamics Engineer | Role Specific Skill

Question 1: How do "slip" and "no-slip" boundary conditions affect the results of a CFD simulation for vehicle aerodynamics?

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Slip boundary conditions reduce drag

No-slip boundary conditions typically result in higher drag

No-slip conditions are irrelevant to drag calculations

Slip boundary conditions result in higher drag

Question 2: How does the no-slip condition affect fluid flow near solid boundaries?

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Reduces temperature gradients

Eliminates turbulence

Creates a uniform velocity profile

Generates vorticity

Question 3: What is the significance of the drag coefficient (Cd) in aerodynamic performance?

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Determines airflow velocity

Measures vehicle's resistance to air

Calculates fuel efficiency directly

Predicts heat dissipation in the engine bay

Question 4: How do aerodynamic appendages like spoilers and diffusers affect wind tunnel results in automotive testing?

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They increase the cost of the test without improving results

They only impact visual aesthetics, not aerodynamic performance

They change the flow characteristics, impacting lift and drag

They reduce the overall testing time

Question 5: Which numerical method is commonly used in computational fluid dynamics (CFD) to solve Navier-Stokes equations?

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Boundary element method

Monte Carlo method

Finite volume method

Finite element method

Question 6: How is ground effect simulated in wind tunnel testing for automotive vehicles?

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By tilting the vehicle model

By using a moving belt under the vehicle model

By changing the turbulence intensity

By adjusting the angle of attack