RANS turbulent channel flow

RANS simulation of a turbulent channel flow solved with different models (0 to 2 transport equations)

RANS simulation of a turbulent flow through a channel

An incompressible fully developed turbulent flow is considered in a channel (statistically stationary and homogeneous in directions parallel to the wall). The numerical code compares different characteristic properties of a turbulent flow, e.g., mean velocity profiles <math-renderer class="js-inline-math" style="display: inline" data-static-url="https://github.githubassets.com/static" data-run-id="d980d488c0e3c8e8bad1cb858ffd1997">$U/u_\tau$</math-renderer>, turbulent kinetic energy <math-renderer class="js-inline-math" style="display: inline" data-static-url="https://github.githubassets.com/static" data-run-id="d980d488c0e3c8e8bad1cb858ffd1997">$k/u_\tau^2$</math-renderer>, dissipation <math-renderer class="js-inline-math" style="display: inline" data-static-url="https://github.githubassets.com/static" data-run-id="d980d488c0e3c8e8bad1cb858ffd1997">$\epsilon/(u_\tau^3/h)$</math-renderer>, turbulent viscosity profiles <math-renderer class="js-inline-math" style="display: inline" data-static-url="https://github.githubassets.com/static" data-run-id="d980d488c0e3c8e8bad1cb858ffd1997">$\nu_T/(u_\tau h)$</math-renderer>, for various turbulent Reynolds numbers Re <math-renderer class="js-inline-math" style="display: inline" data-static-url="https://github.githubassets.com/static" data-run-id="d980d488c0e3c8e8bad1cb858ffd1997">$_\tau$</math-renderer> = {180, 550, 950, 2000} using different turbulence models:

• Length mixing,
• TKE,
• k-epsilon.

Additionaly, I have included the report that I wrote (in spanish) along the numerical code.

Numerical models implemented:

Models	Transport eqs.
Length mixing	0
TKE	1
k-epsilon	2

Database

Data extracted from direct numerical simulations of a fully developed plane turbulent channel flow.

URL: http://torroja.dmt.upm.es/channels/data/

DNS data
Re_tau = 180
Re_tau = 550
Re_tau = 950
Re_tau = 2000