tubebank 1.0

Implementation of the Zukauskas correlations for crossflow over banks of tubes.

tubebank

tubebank is a Python library for dealing with tube banks in crossflow. You can learn more about tube banks at Thermopedia.

tubebank is based on empirical data from A. Zukauskas. It is not highly accurate, especially in the low-intermediate Re range.

tubebank was developed by Ellie Litwack for Baltimore Aircoil Company.

Installation

Use the package manager pip to install tubebank.

pip install tubebank

Usage

import tubebank

#  If n <= 7, a correction factor for short tube banks is applied.
n = 6 #  The number of rows.
diameter = 0.02 #  tube diameters (length)
st = 0.03 #  transverse pitch (length)
sl = 0.03 #  longitudinal pitch (length)
mean_superficial_velocity = 2 #  (length/time)
density = 1.2 #  mass/(length*time)
viscosity = 1.8e-5 #  dynamic viscosity (mass/(length*time))
staggered = True #  False for inline banks, true for stagggered ones
#  alpha, beta, viscosity_ratio, and bounds_warnings are optional.
#  get the pressure drop across a tube bank
tubebank.get_pressure_drop(n, staggered, diameter, st, sl,
     mean_superficial_velocity, density, viscosity)

prandlt_number = 0.7
#  get the Nusselt number of a tube bank
#  valid for n >= 20, 0.7 ~<= Prandlt number ~<= 500,
#  1000 ~<= Re ~<= 2e6
tubebank.get_nusselt_number(staggered, diameter, mean_superficial_velocity, 
     density, viscosity, st, sl, prandlt_number, n)

Contributing

Pull requests are welcome! I would be particularly interested in contributions that could incorporate more recent/accurate data. Find the project on Github.

License

MIT