From 430dc05952986f004b6d389278bf0b436a69a6a3 Mon Sep 17 00:00:00 2001 From: TobiKattmann Date: Mon, 31 Jan 2022 16:19:35 +0100 Subject: [PATCH 1/2] Add Integrated Heatflux to Users Guide. --- _docs_v7/Markers-and-BC.md | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/_docs_v7/Markers-and-BC.md b/_docs_v7/Markers-and-BC.md index fae2a0b8..26b94616 100755 --- a/_docs_v7/Markers-and-BC.md +++ b/_docs_v7/Markers-and-BC.md @@ -73,7 +73,16 @@ A wall with a prescribed constant heatflux is defined with the `MARKER_HEATFLUX` MARKER_HEATFLUX = (Wall1, 1e05, Wall2, 0.0) ``` -**Note**: Typically Navier-Stokes and RANS simulations are setup with adiabatic walls (heatflux = 0). +Instead of a constant heatflux in the unit `[W/m^2]`, a constant rate of heat flow in the unit `[W]` can be prescribed by additionally adding the option `INTEGRATED_HEATFLUX= YES`. For the above `MARKER_HEATFLUX` lets consider that `Wall1` has a Surface area of 0.3 `[W/m^2]` then one could equivalently prescribe +``` +MARKER_HEATFLUX = (Wall1, 0.3e05, Wall2, 0.0) +``` + +when additionally using the `INTEGRATED_HEATFLUX= YES` option. In the case of a DOE or an optimization this prescription of a rate of heat flow might be the more natural boundary condition. + +**Notes**: +1. Typically Navier-Stokes and RANS simulations are setup with adiabatic walls (heatflux = 0). +2. `INTEGRATED_HEATFLUX` is not available for `FEM_NAVIER_STOKES`. ## Heat Transfer or Convection (no-slip) Wall ## From bbc5e3f79337d231e6827736acc70465d0ae0946 Mon Sep 17 00:00:00 2001 From: TobiKattmann <31306376+TobiKattmann@users.noreply.github.com> Date: Mon, 31 Jan 2022 17:40:01 +0100 Subject: [PATCH 2/2] Update _docs_v7/Markers-and-BC.md Co-authored-by: Pedro Gomes <38071223+pcarruscag@users.noreply.github.com> --- _docs_v7/Markers-and-BC.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/_docs_v7/Markers-and-BC.md b/_docs_v7/Markers-and-BC.md index 26b94616..f36183e9 100755 --- a/_docs_v7/Markers-and-BC.md +++ b/_docs_v7/Markers-and-BC.md @@ -73,7 +73,7 @@ A wall with a prescribed constant heatflux is defined with the `MARKER_HEATFLUX` MARKER_HEATFLUX = (Wall1, 1e05, Wall2, 0.0) ``` -Instead of a constant heatflux in the unit `[W/m^2]`, a constant rate of heat flow in the unit `[W]` can be prescribed by additionally adding the option `INTEGRATED_HEATFLUX= YES`. For the above `MARKER_HEATFLUX` lets consider that `Wall1` has a Surface area of 0.3 `[W/m^2]` then one could equivalently prescribe +Instead of a constant heatflux (in `[W/m^2]`), a constant rate of heat flow (in `[W]`) can be prescribed by additionally adding the option `INTEGRATED_HEATFLUX= YES`. For the above `MARKER_HEATFLUX`, lets consider that `Wall1` has a surface area of 0.3 `[m^2]` then one could equivalently prescribe ``` MARKER_HEATFLUX = (Wall1, 0.3e05, Wall2, 0.0) ```