Why the results when using wall thickness and when using shell conduction are different in ansys fluent?

Actually, I am running cfd simulation for a heat exchanger which has two fluids one hot and other one is cold fluid. there is a solid domain between them, which I removed and instead I have used...

01 March 2021 9,537 2 View

How much pressure we can reduce at the outlet to avoid Reverse Flow?

I am simulating Heat Exchanger. I have tried and tested all the methods to resolve this issue from the internet like refining mesh, improving skewness and orthogonal quality ,extending outlet to...

01 March 2021 6,985 3 View

Does anyone know to clarify these changes?

01 March 2021 1,290 2 View

What is recommended for solid domain in ANSYS FLUENT?

Should I mesh the solid domain ? or should I use wall thickness? or Shell conduction? for Heat Transfer between two fluids of a Heat Exchanger. what is recommended?

01 March 2021 9,785 3 View

Can Virtual Servers (remote dekstop manager) run heavy ANSYS Fluent CFD simulation ?

I have a virtual machine. My host Pc specs are not that good thats why i went for virtual servers. so basically my host pc has 8gb of ram with nvidia quadro k2200 4Gb DDR5 GPU ,processor intel...

01 March 2021 8,415 1 View

What is the difference between PBE and PBEsol functional?

Hello, I am a 3rd year chemistry student and I'm writing my project report on computational chemistry. does anyone know how PBEsol improves upon the PBE functional? Thanks in advance

19 February 2021 7,068 4 View

Can someone help me with this error that I am getting while estimating a VAR model in R?

I am using annual time series data to estimate a VAR model in R. However, when I run the command to find the optimal lag length, I get the following error: Fehler in VARselect(data, lag.max = 10,...

18 February 2021 9,647 3 View

In your experience what is the difference between G.652D and G.655D optical fiber. In field and in lab?

In our current era there is a big confusion about the usage of G.652 and G.655 optical fiber cable. Theoretically G.655 is much better than G.652 but the operator feel that G.652 is giving almost...

11 February 2021 4,006 8 View

How many dilutions are good enough for TCOD50 of SARS-CoV-2?

I started with 10e-1 till 10e-10. But when I searched for online calculator they mostly consider 5 dilutions. Is there a reason behind it or I should make less dilutions?

11 February 2021 5,839 3 View

How can I add the metal oxide NP's to the cell lines? I have to make some drug and NP conjuhgates. How much concentration to use? Need some help?

Hi everyone. I am working on metal oxides. I need to make some conjugates of drugs and NP. But I am unsure of what concentrations to make. I have read some articles, but they haven't mentioned...

10 February 2021 3,372 2 View

Is it possible to do piezoelectric coupling in ANSYS-APDL or COMSOL between tapered substrate and rectangular piezoelectric patch?

How to do Piezoelectric coupling in ANSYS-APDL or COMSOL between tapered substrate and rectangular piezoelectric patch? Piezoelectric coupling between the rectangular substrate and rectangular...

02 March 2021 9,833 3 View

How can you tell if your organotypic slice culture is healthy ?

I'm working on organotypic cerebellar slice cultures from postnatal rats and I'm not sure how to tell if the slices are healthy at any given point. I know there should be a lot of microglial...

15 February 2021 2,830 2 View

Reaction condition to convert NH2 to COOH?

I need to couple Dopamine by NH2 end to silica nanoparticles coated by PEG-NH2, but first i need to convert the PEG-NH2 to COOH by using succinic anhydrous ... can you suggest a reaction condition ?

13 February 2021 2,768 4 View

Coupled hydric and mechanical equation COMSOL?

hello i am trying to study the mechanical deformation due to the humidity on a 3d volume formed of 2 phases. my equation are dw/dt =grad(Dm*div(w)) and the mecanical is sigma=E*beta*nabla(w)....

27 January 2021 5,201 1 View

In abaqus, how to couple a reference point to a discrete rigid body?

I have two discrete rigid bodies. A axial connector was established to connect two reference points. Now the task is to attach the reference points to the respective rigid part. How should I do...

25 January 2021 5,079 3 View

How exactly modes are coupled into asymmetric directional coupler?

Currently I am reading one research paper regarding silicon based two and four mode division multiplexing for optical data transmission in 2 micrometer waveband. While reading I stuck at one...

21 January 2021 5,864 4 View

How to simulate Sloshing water using Dynamic mesh in ANSYS Fluent ?

I am trying to model sloshing water in a tank in ANSYS Fluent using Wall motion. BUT it seems that System coupling is not responding to wall motion and it works only with Dynamic mesh.

20 January 2021 2,963 3 View

Can you tell the pros and cons of the proposed active AC coupling circuit?

Are there analog circuit designers? Here is a small task for you. The active circuit below aims to improve the AC coupling in the biosignal amplifiers. Is that so? Are there any pros? I'm...

17 January 2021 3,548 14 View

What's the difference between light absorption and coupling in plasmonic metals?

What's the difference between light absorption and coupling in plasmonic metals? It seems that light absorbed in metal nanostructure/nanoparticles doesn't contribute to enhancement in electric...

14 January 2021 1,884 4 View

Which one I should choose in Abaqus ?

Hello, plese give me your idea! I simulate one slab concrete affected by temperature at top and bottom surfaces. after that, have a static load distribution with small area put on top surface. I...

12 January 2021 5,769 4 View