mocNozzle

• Calculate wind tunnel nozzle contour
• Calculate some operation specifications

Usage

• Download folder
• Make sure you have python and pip installed
• Run packages.bat file to install the necessary python libraries with pip
  • Depends on numpy, pandas, scipy, matplotlib
• Run mocNozzle.py from command line with desired arguments

mocNozzle.py [-h] [--throatRad THROATRAD] [--throatHeight THROATHEIGHT] [--gamma GAMMA] [--Mach MACH]
                    [--numInit NUMINIT [NUMINIT ...]] [--numFullBounce NUMFULLBOUNCE] [--name NAME]
                    [--outputDir OUTPUTDIR] [--save] [--noshow] [--gridOverContour] [--noplotConvergence]
                    [--noplotCenterline] [--nocalcOperation]

Arguments

• -h, --help
  • show this help message and exit
• --throatRad THROATRAD, -r THROATRAD
  • set radius of the throat (as a fraction of the throat height
• --throatHeight THROATHEIGHT, -H THROATHEIGHT
  • set throat height (leave as 1)
• --gamma GAMMA, -g GAMMA
  • set ratio of specific heats of the gas
• --Mach MACH, -M MACH
  • set design Mach number for the wind nozzle
• --numInit NUMINIT [NUMINIT ...], -i NUMINIT [NUMINIT ...]
  • set list of number of initial points to make up the circular throat area. ex: 8 16 32 64
• --numFullBounce NUMFULLBOUNCE, -b NUMFULLBOUNCE
  • set number of times the characteristic curves should bounce off the centerline (not implemented, do not use)
• --name NAME, -n NAME
  • set name of the run (for image output)
• --outputDir OUTPUTDIR, -o OUTPUTDIR
  • specify name of the directory to output the plot images to
• --save, -S
  • save the data to an pickle file (h5 requires another dependency)
• --noshow, -s
  • toggle off showing interactive plots at the end
• --gridOverContour, -G
  • show characteristic curves over contour plot
• --noplotConvergence, -C
  • toggle off plotting the convergence WRT number of initial waves
• --noplotCenterline, -c
  • toggle off plotting Mach and total pressure and temperature ratios on the centerline
• --nocalcOperation, -O
  • toggle off calculation the answers to the operations questions for part 3

Defaults

By default, mocNozzle.py runs with

• gamma = 1.4
• R = 287
• Me = 5
• throatHeight = 1
• throatRad = 1 / 2
• numInit = [256]
• numFullBounce = 1
• save = False
• show = True
• name = 'mocNozzle'
• outputDir = './'
• convergeNums = [8 16 32 64 128 256]
• plotConvergence = True
• plotCenterline = True
• calcOperation = True
• gridOverContour = False

Example

• generate all plots and output without interactive plots

python .\mocNozzle.py -s

• run with interactive plots, without convergence, with 64 starting points

python .\mocNozzle.py -Ci 64