GTEngine

Math models of gas turbine engine and its parts made with ruby language

Usage

Add gem to your gemfile

gem 'gtengine'

and run

bundle

Simple

For simple parts calculation:

gas = Gtengine::Gas.new(300, 101325)

k = Gtengine::Simple::Compressor.new(gas, 4.5)
b = Gtengine::Simple::Burner.new(k.output, 1500)
t = Gtengine::Simple::Turbine.new(b, k.l_k)

k.info; b.info; t.info

To play with cycle (compressor -> burner -> turbine)

require_relative 'lib/gtengine'
gas = Gtengine::Gas.new(300, 101325)

c = Gtengine::Simple::Cycle.new(gas, 20, 1500.0)

c.compressor.info; c.burner.info; c.turbine.info; c.info

To play with pi_k optimization

require_relative 'lib/gtengine'
gas = Gtengine::Gas.new(300, 101325)

opt = Gtengine::Simple::PikOptimizer.new(gas, 3, 40, 1500, 1)
opt.info

Cycle research with T_g and pik

require_relative 'lib/gtengine'
gas = Gtengine::Gas.new(300, 101325)

res = [900, 1000, 1100, 1200, 1300, 1400, 1500].inject({}) do |memo, t_g|
  opt = Gtengine::Simple::PikOptimizer.new(gas, 3, 40, t_g, 1)
  memo.merge(t_g.to_s => opt.optimal.pi_k)
end
puts res

Compressor

Compressor initializer gets 3 arguments as input:

Gtengine::Simple::Compressor.new(gas, pi_k, options)

where:

• gas - is gas state, as Gtengine::Gas class
• pi_k - is pi_k
• options - is a hash of options, defaults are:

    DEFAULTS = {
      kpd: 0.85
    }

Burner

Burner initializer gets 3 arguments as input:

Gtengine::Simple::Burner.new(gas, t_g, options)

where:

• gas - is gas state, as Gtengine::Gas class
• t_g - is t_g
• options - is a hash of options, defaults are:

    DEFAULTS = {
      t_0: 288.3,
      q_n: 43000000.0,
      eta_g: 0.985,
      l_0: 14.7
    }

Turbine

Turbine initializer gets 3 arguments as input:

Gtengine::Simple::Turbine.new(burner, l_k, options)

where:

• burner - is burner, as Gtengine::Simple::Burner class
• l_k - is l_k
• options - is a hash of options, defaults are:

    DEFAULTS = {
      eta: 0.9,
      eta_m: 0.985,
      g_ohl: 0.001,
      kpd: 0.9
    }

Requirements

* Ruby 2.0.0 or newer

Copyright

Copyright © 2014 Oleg Bovykin. See LICENSE for details.