RANS turbulent channel flow

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

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更新 2022/8/3

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RANS simulation of a turbulent flow through a channel

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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="4920c3c1a94d1a30b3a41a73da54c6c6">$U/u_\tau$</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="4920c3c1a94d1a30b3a41a73da54c6c6">$k/u_\tau^2$</math-renderer>, dissipation <math-renderer class="js-inline-math" style="display: inline" data-static-url="https://github.githubassets.com/static" data-run-id="4920c3c1a94d1a30b3a41a73da54c6c6">$\epsilon/(u_\tau^3/h)$</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="4920c3c1a94d1a30b3a41a73da54c6c6">$\nu_T/(u_\tau h)$</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="4920c3c1a94d1a30b3a41a73da54c6c6">$_\tau$</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

引用

Alberto Cuadra Lara (2023). RANS turbulent channel flow (https://github.com/AlbertoCuadra/RANS_turbulent_channel_flow/releases/tag/v1.1.3), GitHub. 取得済み .

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作成: R2021b
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バージョン 公開済み リリース ノート
1.1.3

See release notes for this release on GitHub: https://github.com/AlbertoCuadra/RANS_turbulent_channel_flow/releases/tag/v1.1.3

1.1.2

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