How to show arrows over the streamlines in CFD-post?

I follow this to make streamlines like the photos attached below: (software- CFD post-processing) First I plot the 2D streamline over a surface "streamline 1". them I plot a vector by the...

01 March 2021 8,668 3 View

How to increase mesh quality of a cfd model in ansys fluent?

How can one improve mesh skewness, orthogonality, aspect ratio?

28 February 2021 7,730 3 View

Why is my CFD problem (mini heat sink rectangular channel) not converging while having good quality mesh?

My CFD problem is having two interconnected rectangular channel, which is known as mini heat sink. I have already performed parallel flow inside of an interconnected mini heat sink. However, I...

19 February 2021 3,209 3 View

Polyelectrolyte complex ion pairing through IR?

Is it possible to observe ion pairing (contact ion or solvent separated ion) of polyelectrolyte complexes through liquid FTIR? Although the PECs have been widely studied in the last two decades, I...

12 November 2020 4,800 1 View

How can I get better picture for the attached TEM Image??

I used TEM equipped with tungsten gun to obtain attached image (several other too, like shown). Side blotting technique followed by negative staining (1% PTA for 30 sec) was used. I cannot get the...

31 October 2020 1,902 5 View

How can I get Nusselt number for mini rectangular channels using fluent?

I am validating my CFD mini rectangular channel model. For that purpose, I need to know how to get the Nu number accurately. For Calculating Nusselt no. from fluent post-processing as follows:...

24 October 2020 3,444 5 View

What is the possible biological explanation of the mutational pressure as a driving force on the evolution of particular species ?

In one analysis major role of mutation pressure was observed in codon usage bias of some species

19 October 2020 4,755 1 View

Do family demographic processes link socioeconomic status to men's physical health?

Previous literature suggests that lower socioeconomic status (SES) men through higher family sociodemographic pressure and lower capacity of stress control, compared to higher SES men, are more...

08 October 2020 2,740 1 View

Is poorer capital at home and at school linking minority children's lower SES to their underachievement?

14 September 2020 8,297 4 View

Which R package is better for Micro array gene expression data analysis?

I am trying to analyze the micro array gene expression data between control and treatment. I would like to use R programming package. Which package is better and how can i use. I want step by step...

23 August 2020 8,111 7 View

How to quantify carbon deposition on CuZnAl catalyst?

Dear All, I want to quantify carbon deposition on the surface of the CuZnAl catalyst. I have tried thermogravimetric analysis, but I've got weight gain as the active Cu- get oxidised. Does anyone...

01 March 2021 1,907 3 View

Why Trivalent chromium start precipitating above PH 5 ? Moreover discuss difference between adsorption of chromium and precipitation of chromium ?

I am a student of MS Environmental Engineering and started my research phase. I am working on metal removal ( chromium iii ) by using activated carbon prepared from the agricultural feedstock. So...

01 March 2021 5,475 2 View

How to check the uv-vis absorption of nanoparticle by surface plasmon resonance?

I try to check the uv-vis absorption of Indium nanoparticle. Now I am measuring in solution, can I measure it in the form of a film?

01 March 2021 930 3 View

Any research papers for extraction of nutrient deprivation on macroalgae? Analysed by HPLC-UV and GC/MS. Possibly from macroalgae genus Rhizoclonium?

I am doing my thesis on the nutrient deprivation on the macroalgae Rhizoclonium sp. I will be analysing the levels over a period of roughly 5 days by HPLC-UV and GC/MS. I will be using seawater as...

28 February 2021 6,477 1 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

Exit velocity of natural gas from pressurized tank?

Hi Guys. I'm a mechanical engineer and have a bit trouble, would be very glad if you could help me with my questions. I have a pressurized tank which contains Natural Gas at 200 Bar and 293...

26 February 2021 6,253 3 View

Why initial concentration of Pb not the same as calculated one when testing using AAS?

I am currently doing research on the adsorption of heavy metal using magnetic reduce graphene oxide. I use AAS to determine the concentration of the heavy metal. I prepare the Pb solution with...

26 February 2021 9,580 4 View

How can I assign a velocity along one direction to CO2 molecules in a molecular dynamics simulation using GROMACS?

Dear all, I am trying to perform a MD simulation about the interaction between CO2 and a polymer. I create my model, solvate it and perform the NVT and NPT equilibration. Now I am not able to...

26 February 2021 10,014 3 View

Gas sensor response and recovery time independant of flow rate and chamber volume?

I am trying to obtain the response and recovery times for my gas sensor device. It appears the the response/recovery times are primarily dependant on the flow rate of the gas I inject into the...

26 February 2021 1,511 3 View

Why do a weight decrease for thermal degradation in nitrogen gas condition?

Hi all The question is related to TGA(Thermogravimetric analysis). Thermal degradation easily understood but why do samples weight decrease? altough just binding is broked, the weight of...

26 February 2021 1,100 5 View