Week 2 - Converging diverging nozzle
AIM:
- To simulate a flow through a converging-diverging nozzle using ANSYS Fluent.
OBJECTIVE:
- At Inlet, Pressure = 1atm and Temperature = 300K. The outlet pressure= 0.027 atm. In the operating conditions, consider the reference pressure to be zero.
- Plot: The pressure, velocity and temperature variations across the domain.
PROCEDURE:
Open space claim in Ansys Fluent.
Geometry:
MESH:
Mesh size = 1 mm
Mesh Quality:
- Named the boundaries as Inlet, Outlet, Axis and wall.
SETUP:
- pressure-based
- The energy option is enabled
- k epsilon
- The material set to Ideal Gas air
- In operating conditions, the pressure is set to 0 to remove round-off errors which are common in density-based solvers
- A standard initialization from the inlet is done
- Run for 1000 iterations
RESULTS:
- Pressure contour
- Velocity contour
- Temperature contour
CONCLUSION:
- Run a steady-state simulation on a converging-diverging nozzle.
- Extracted necessary contours and plotted the variation of flow characteristics like pressure, temperature, and velocity.
- The variation of the Mach number is 1.2 - 5.0 across the domain the inlet flow will become supersonic.