Reference no: EM133029975
Assignment - Computational Fluid Dynamics and Structural Analysis using Ansys Workbench
Q1. Flow around a truck - The aerodynamic performance of vehicles can be improved by utilizing computational fluid dynamics simulation. In this case study, we conduct fluid analysis of the air flow passing through a truck. Assume air at room temperature of 25oC for the flow field with an air velocity of 40 km/h blowing from left to right. Use nonslip boundary conditions along the walls of the truck and the ground surface. Find the airflow pattern as well as the pressure and velocity distributions of the flow field around the truck.
Q2. Flow in a Convergent- Divergent Nozzle - Consider a convergent divergent nozzle in which air is flowing. At inlet the stagnation pressure is atmospheric pressure, at the exit pressure is lower than the inlet. Flow becomes supersonic at the exit and pressure is 2814 Pa. Find variation of velocity, Mach number, Static pressure and static temperature along the axis. Also show the density, pressure, temperature and density contour.
Q3. Steady state thermal analysis of heat sink - Heat sinks are commonly used to enhance heat dissipation from electronic devices. In the case study, we conduct thermal analysis of a heat sink made of aluminum with thermal conductivity k = 170 W/(m K), density ρ = 2800 kg/m3, specific heat c = 870 J/(kg K), Young's modulus E = 70 GPa, Poisson's ratio ν = 0.3, and thermal expansion coefficient α = 22 × 10-6/°C. A fan forces air over all surfaces of the heat sink except for the base, where a heat flux q′ is prescribed. The surrounding air is 28°C with a heat transfer coefficient of h = 30 W/(m2oC). Study the steady-state thermal response of the heat sink with an initial temperature of 28oC and a constant heat flux input of q′ = 1000 W/m2.
Q4. Transient thermal analysis of heat sink - In the previous problem suppose the heat flux is a square wave function with period of 90 s and magnitudes transitioning between 0 and 1000 W/m2. (Part i) Study the transient thermal response of the heat sink in 180 s by using the steady-state solution as the initial condition. (Part ii) Now suppose the base of the heat sink is fixed. Study the thermal stress response of the heat sink by using the steady-state solution as the temperature load.
Q5. Structural analysis of truss - Truss bridges can span long distances and support heavy weights without intermediate supports. They are economical to construct and are available in a wide variety of styles. Consider the following planar truss, constructed of wooden timbers, which can be used in parallel to form bridges. Determine the deflections at each joint of the truss under the given loading conditions.
Q6. Structural analysis of simply supported beam - Find the deformation and equivalent stress for the following simply supported beam with uniform distributed load. Assume beam to be structural steel.
Q7. Structural analysis of vase (thin shell) - Vases are decorative pieces that can be of any artistic shapes. The figure below gives the dimensions of a flower vase made of glass. Assume that the vase has a uniform thickness of 4 mm. The water level reaches 100 mm below the opening of the vase. Determine the maximum deformation and von Mises stress in the vase under the hydrostatic pressure.
Q8. SFD and BMD for cantilever beam - Draw shear force and bending moment diagram for the following beam. Also show the deformation curve for beam.
