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Search: Posts Made By: fumiya
Forum: OpenFOAM Announcements from Other Sources October 14, 2020, 17:22
Replies: 5
Views: 3,284
Posted By fumiya
Introduction Event of ennovaCFD

We are planning to hold online events in Oct. (Only in Japanese) to introduce Japanese followers to our product ennovaCFD for OpenFOAM.

We want to plan English events as well after Nov. if more...
Forum: OpenFOAM Running, Solving & CFD September 22, 2020, 02:16
Replies: 6
Views: 3,375
Posted By fumiya
An additional note

The setExprFields utility in OpenFOAM v2006 does not work if the entry "condition" is empty as shown below:


condition
#{
#};
Forum: Main CFD Forum September 22, 2020, 02:07
Replies: 4
Views: 725
Posted By fumiya
Hi MaySea, The value entry is necessary...

Hi MaySea,

The value entry is necessary because the nutkRoughWallFunctionFvPatchScalarField class
is inherited from the fixedValueFvPatchScalarField class.
I understand that the value is only a...
Forum: OpenFOAM Running, Solving & CFD September 20, 2020, 23:34
Replies: 6
Views: 3,375
Posted By fumiya
setExprFields example to generate an initial velocity field for LES of channel flow

As you know, perturbU utility [1] can be used
to generate an initial velocity field for large eddy simulation
of channel flow. This utility is not included in the official release
version but...
Forum: OpenFOAM Running, Solving & CFD September 20, 2020, 22:49
Replies: 11
Views: 1,705
Posted By fumiya
Check your linear solver tolerance

As you can see, No Iterations are 0 in your simulation.
This means the initial residual satisfies the (absolute) tolerance you specified in the solvers dictionary(initial residual < tolerance)
and...
Forum: OpenFOAM Announcements from Other Sources September 20, 2020, 07:53
Replies: 5
Views: 3,284
Posted By fumiya
Case setup of adjoint shape optimization and overset simulations

Case setup of adjoint shape optimization and overset simulations will be supported in the next release of ennovaCFD for OpenFOAM:

Adjoint shape optimisation using adjointOptimisation...
Forum: OpenFOAM Announcements from Other Sources September 20, 2020, 07:47
Replies: 5
Views: 3,284
Posted By fumiya
OpenFOAMWiki

Our software ennovaCFD for OpenFOAM has joined the wiki list of GUI for #OpenFOAM!
https://openfoamwiki.net/index.php/GUI

I wish you would know ennovaCFD!
Forum: OpenFOAM Community Contributions September 20, 2020, 07:42
Replies: 0
Views: 865
Posted By fumiya
Sample case of simplified energy transport simulation for incompressible flow

I've attached a simplified energy transport simulation case for incompressible flow with the following functionality in OpenFOAM v2006:

energyTransport: to solve a simplified energy transport...
Forum: Main CFD Forum September 20, 2020, 02:34
Replies: 4
Views: 725
Posted By fumiya
--> FOAM FATAL IO ERROR: Essential entry...

--> FOAM FATAL IO ERROR:
Essential entry 'value' missing

file: /home/jan/0/nut.boundaryField.barkley from line 52 to line 54

The above message shows that value entry is missing in the...
Forum: OpenFOAM Community Contributions September 20, 2020, 01:28
Replies: 0
Views: 877
Posted By fumiya
Sample case of coded motionSolver: Dam break with a lifting gate

I've attached a sample case of dam break simulation with a vertically lifting gate(U=0.5m/s) using coded motionSolver.
I checked this case with v2006 but have not performed any validation.
...
Forum: OpenFOAM August 30, 2020, 06:49
Replies: 2
Views: 1,052
Posted By fumiya
manual method of decomposePar

Hi,

You might want to try 'manual' decomposition method of decomposePar utility.

Hope this helps,
Fumiya
Forum: OpenFOAM August 1, 2020, 21:00
Replies: 2
Views: 1,062
Posted By fumiya
total pressure coefficient field

In aerodynamics simulations, the total pressure coefficients fields are also used to check the regions of vortical structures that cause drag increase.

Best regards,
Fumiya
Forum: OpenFOAM August 1, 2020, 20:31
Replies: 6
Views: 1,268
Posted By fumiya
Unfortunately, I've not used this boundary...

Unfortunately, I've not used this boundary condition.
So, we need more information on what you wrote.

Best regards,
Fumiya
Forum: OpenFOAM August 1, 2020, 20:24
Replies: 1
Views: 1,189
Posted By fumiya
meanVelocityForce fvOptions

You can use meanVelocityForce fvOptions:
https://www.openfoam.com/documentation/guides/latest/doc/guide-fvoptions-sources-mean-velocity-force.html

You might want to check the following tutorial:...
Forum: OpenFOAM Pre-Processing July 25, 2020, 21:44
Replies: 2
Views: 945
Posted By fumiya
There is uniformTotalPressure boundary condition....

There is uniformTotalPressure boundary condition.
You might want to check the tutorial:
incompressible/pimpleFoam/RAS/TJunction

Hope this helps,
Fumiya
Forum: OpenFOAM Pre-Processing July 25, 2020, 21:37
Replies: 1
Views: 650
Posted By fumiya
Why don't you use snappyHexMesh? It is...

Why don't you use snappyHexMesh?
It is time-consuming to generate boundary-fitted mesh with blockMesh.

Hope this helps,
Fumiya

P.S.
We've developed ennovaCFD, a commercial mesh generator...
Forum: OpenFOAM Running, Solving & CFD July 25, 2020, 21:16
Replies: 24
Views: 10,116
Posted By fumiya
In the first scenario, mesh lines generally do...

In the first scenario, mesh lines generally do not align to your initial liquid volume(particularly in the case of unstructured meshes as you wrote), so obtained initial alpha distribution might be...
Forum: OpenFOAM Meshing & Mesh Conversion July 25, 2020, 00:39
Replies: 1
Views: 656
Posted By fumiya
Hi, You might want to try if...

Hi,

You might want to try if velocityDampingConstraint helps:
https://www.openfoam.com/documentation/guides/latest/doc/guide-fvoptions-constraints-velocity-damping.html

Hope this helps,
Fumiya
Forum: OpenFOAM July 25, 2020, 00:05
Replies: 6
Views: 1,268
Posted By fumiya
Hi, I think you visualized the face center...

Hi,

I think you visualized the face center values.
A default interpolation scheme(linear) was used and you got (0 + 4.521512266064)/2=2.26.
So, I think the boundary condition works as expected....
Forum: OpenFOAM Running, Solving & CFD July 24, 2020, 22:20
Replies: 5
Views: 742
Posted By fumiya
Hi Chandra, I think there is not...

Hi Chandra,

I think there is not straightforward way in the case of unstructured meshes.

As you know, line samplings are possible using sample function in OpenFOAM.
So, the following procedure...
Forum: OpenFOAM Running, Solving & CFD July 24, 2020, 21:55
Replies: 24
Views: 10,116
Posted By fumiya
Hi, There are two scenarios: 1. Create a...

Hi,

There are two scenarios:
1. Create a cellZone corresponding to your initial liquid volume with snappyHexMesh and use setFields with zoneToCell option
You might want to check the tutorial...
Forum: OpenFOAM Running, Solving & CFD July 23, 2020, 17:57
Replies: 5
Views: 742
Posted By fumiya
Hi, If your mesh is a structured one, you...

Hi,

If your mesh is a structured one, you can use columnAverage function object to calculate spanwise average:...
Forum: OpenFOAM July 23, 2020, 17:45
Replies: 1
Views: 1,275
Posted By fumiya
Hi, You might want to take a look at the...

Hi,

You might want to take a look at the following tutorial:
https://develop.openfoam.com/Development/openfoam/-/tree/master/tutorials/incompressible/simpleFoam/bump2D

In this tutorial,...
Forum: OpenFOAM Running, Solving & CFD July 23, 2020, 09:04
Replies: 4
Views: 1,566
Posted By fumiya
Hi Sedullo, For a perfect gas, the thermal...

Hi Sedullo,

For a perfect gas, the thermal expansion is a inverse of the absolute temperature:
https://en.m.wikipedia.org/wiki/Thermal_expansion

Hope this helps,
Fumiya
Forum: OpenFOAM Announcements from Other Sources July 23, 2020, 00:46
Replies: 5
Views: 3,284
Posted By fumiya
Brief introduction of ennovaCFD for OpenFOAM

ennovaCFD is a pre- and post-processing tool for OpenFOAM and iconCFD.


Generate polyhedral mesh and can directly export in OpenFOAM format
Set up following solvers in OpenFOAM(ESI version)...
Showing results 1 to 25 of 266

 
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