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

Greetings Doctors, If i did a same experiment for a 2 populations and i need to publish this work in a 2 different papers?

If i did a same experiment for a 2 populations and i need to publish this work in a 2 different papers can i use the same word in the writing of these 2 papers or this would considered as...

04 February 2021 4,648 4 View

Does anyone know HRM channel in a 2 plex QIAGEN Rotor- Gene Q qPCR can be used as a separate channel?

I am going to have 3 different probes in my qPCR work that I am going to do. But I realized that the machine we have in the lab is a Rotor-Gene Q 2plex HRM Platform, saying it has green, yellow,...

01 March 2021 8,544 1 View

How can you bring two structures together to create an adhesive bond in LAMMPS?

I have created an Ice 1h crystalline structure and an Aluminium substrate structure and equilibrated both at 250K. Now I need to bring them together in a way that an adhesive bond is created....

01 March 2021 3,325 2 View

Necessary tube lenght to cool Natural gas in a dry-ice cooling bath?

I have a tank which contains natural gas at 250 Bar and 293 Kelvin. I want to cool the gas in a dry-ice cooling bath to about 195 Kelvin. The gas will flow in a copper-tube through the bath with a...

27 February 2021 8,128 1 View

Could the "incoming radiation (net radiation)" values be negative?

Could the "incoming solar radiation" values be negative? What is the difference between "global solar radiation" and "incoming solar radiation"? Which one might be measured negative values?

21 February 2021 7,726 9 View

Dealing with BMDM seeding and RNA extraction ?

biomedical master student here , i am dealing with mice BMDM and would like some help , i seed 0.5 x 10^6 cells/per well in a 6 well plate but when i extract the RNA i get a very low yeild , i...

15 February 2021 1,102 5 View

How to raise temperature in small increments during equilibration in LAMMPS?

All, I am trying to equilibrate an Ice 1h crystalline structure to 250K in LAMMPS. When I tried to do this at 250K directly, the structure lost it's crystalline shape and became disordered post...

14 February 2021 5,747 2 View

How long can agarose embedded tissues be kept?

I am embedding PFA fixed tissues in low melting point agarose prior to sectioning and I am wondering how long can these can be kept whilst maintaining tissue integrity and fluorescent signal?...

14 February 2021 6,688 3 View

Global Warming effects?

Hi Professionals! Due to Global warming the earth temperature increases (https://climate.nasa.gov/effects/), which generates floods, storms, and tornadoes because of melting of ice glacier, in...

08 February 2021 9,038 8 View

Using SPSS to calculate the global SCL-90-R scores?

Hi, just wondering if anyone can please tell me how you calculate the PSDI and PST global indices of distress (from the Symptom Checklist-90-Revised by Leonard Derogatis, 1994) in SPSS? Many...

08 February 2021 5,243 2 View

What is a suitable method to freeze feeders-free, serum free episomal hiPSC?

Hi everyone, I need your professional advice: I started growing episomal iPSC (commercial cell line). I grow them in StemFlex medium. What would you recommend as the most effective freezing...

07 February 2021 8,591 4 View