Blog Entries

I started a CFD project and lost my way. I keep going around like the Blair Witch Project. Nothing I have tried has worked.

I did some simple simulations and got good results -- numbers agree with empirical results.

So I decided to try to apply CFD to an inline gas filter. The filter consists of a housing and a pleated fabric filter. The fabric has around 50 pleats with a porosity of 0.4. I simulated the porosity by cutting slots in the CAD model pleats equally...

Turbulence is a complex phenomenon that occurs in most engineering applications involving fluid dynamics. It is characterized by the irregular and chaotic motion of fluid particles, which can cause significant fluctuations in velocity and pressure. Until now, there has not been a single and practical turbulence model that can reliably predict all turbulent flows with sufficient accuracy. whereas many turbulence models have been developed from the perspective of finding different compromises between...

Hello everyone,

I am happy to announce the next occasion of the monthly meeting on the 18th of February 2023 at 14:00 German Time (UTC+1). The meeting takes place using zoom with the attached room details (only visible when logged in). In parallel the meeting times are announced in this calendar for integration in a mail client and as website. Details can be found in this thread.

Everybody is welcome.

See you there.
Patrick

How to install unbuntu system and open foam in your computer by VM


First，you should go to this site: https://cn.ubuntu.com/download. In this site ,you can install this package. The package's name is ubuntu-22.04.1-desktop-amd64 (1).iso . it's type is iso. After you download it, you should reserve it instead of releasing it. Then, you should install a software named Vmware Work Staion. Last, you should download openfoam and thirdParty. When you finish the installation...

Here's the theory for relativeVelocityModel in OpenFOAM8 that I uncovered manually going through the code and commit history of OpenFOAM8.


Before we proceed, since there are a couple of main scientific schools in the world that use different notation, let me declare some notations that I'm going to be using:


<-- this dot is just a general sign for multiplication; both multiplication of scalars and scalar multiplication of vectors can be denoted...