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

Protocol for bacterial samples preparation for Scanning Electron Microscopy ?

I want to prepare bacterial samples to observe the bacterial cell lysis by bacteriophage protein (endolysin) through scanning electron microscopy. Please, anyone can share the protocol of...

01 February 2021 1,173 3 View

How two melting peaks in DSC of polypropylene can be merged into one crystallization peak?

The figure shows DSC cooling (blue) and 2nd heating (green) curves (step: 10 K/min) for a commercial sample supplied as Atactic Polypropylene (APP). The heating curve illustrates two major...

03 March 2021 5,857 3 View

Aspen plus (hydrometallurgy set-up) & reactions solid-liquid ?

I have to simulate a hydrometallurgical process where there are the following phases: - leaching (solid-liquid reactions) - cementation (solid-liquid reactions) - electrowinning (energy ) -...

30 January 2021 9,225 3 View

From the XRD pattern or peak can we quantify the amount of transferred material. The volume fraction of crystallized material from amorphous phase?

From the XRD pattern or peak can we quantify the amount of transferred material. The volume fraction of crystallized material from amorphous phase?

22 December 2020 7,632 2 View

How to separate large amounts of two Riboflavin-based compounds with similar solubilities?

I'm running a reaction in where riboflavin is derivatized with a crosslinker in DMSO. The final reaction mixture contains riboflavin (non reacted) and riboflavin-crosslinker compound (slightly...

13 December 2020 4,865 3 View

Is there any software (windows) or spreadsheet except MELTS to understand fractional crystallization behaviour of volcanic rocks (i.e. basalts)?

I have bulk rock major and trace elements data available to me.

17 November 2020 3,531 3 View

What's this white haze over this protein crystallization droplet?

So I am trying to crystallize a Protein:DNA complex with DNA at at least 5 times excess at basic pH with a certain poleythene glycol molecular weight (PEG) and a mixture of soluble salts at low...

28 September 2020 8,083 4 View

Protocol to flash freeze proteins in -80 Deg C?

Hi all, I have a purified protein (57kDa) which tends to precipitate at 4 deg C after a week (conc. 9mg/ml). Can you please share the protocol to flash freeze protein in Liquid nitrogen and...

16 September 2020 1,410 5 View

Is it possible to have different amino acid in the protein crystal structure that doesn't match with its real sequence?

Hi, I had crystallised a protein and realised that some amino acids doesn't fit to the electron density in the electron density map. Is it possible to have different amino acid in the protein...

07 September 2020 7,166 7 View

How to recognize and verify the crystallization occur or not?

Hi, everyone My feedstock powder is water atomized Sn with a diameter range from 10-100 um. After the cold spray processing, the EBSD maps can be obtained. Because my smallest powder is 10um,...

07 September 2020 7,766 4 View

How is dislocation density related to bulk defect density?

In materials science, a dislocation (line defect) represents a linear crystallographic defect within the crystal structure, which causes an abrupt change in the arrangement of atoms, which in turn...

27 July 2020 4,064 7 View