Week 2 - Converging diverging nozzle

Converging diverging nozzle

consider the converging-diverging nozzle below with the dimensions.

Inputs

• At Inlet, Pressure = 1atm and Temperature = 300K. The outlet pressure= 0.027 atm.
• reference pressure to be zero.

Objectives

1. The pressure, velocity and temperature variations across the domain
2. The variation of Mach number across the domain and at what distance from the inlet does the flow become supersonic

Steps:

creating a geometry

creating meshing

simulation

results

creating a geometry

create the geometry as per the dimension in this space claim software

draw a 2D diagram and use pull option to make a surface

creating meshing

make a mesh finer

simulation

The digram is symmetric so we are using axisymmetric

set The outlet pressure= 0.027 atm

Run the simulation for 500 iterations

Post processing the results

Results

Residuals

Velocity polt

Velocity countour

Temprature

Temprature countour

Pressure plot

MACH countor across the domain Form half distance from the inlet the flow cahnges to MACH

As the gas enters the converging section, its velocity increases, considering the mass flow rate to be constant. As the gas passes through the throat, it attains sonic velocity (Mach number = 1).

Conclusion:

I got better understand about the convergent dirvegent nozzle about MACH flow changes in the nozzle

good results in simulations and post processing

velocity ,pressure ,Temprature , MACH flow are polted

NOTE: the images are not uploding