How to find/calculate the activation energy from this constant (in Arrhenius equation) ?

Guys, I've seen the Modified Arrhenius equation in several forms. For instance, three kinds are attached. Please consider the first attachment. There is an activation energy (Er). In some cases,...

08 September 2019 8,975 24 View

How to export the data from this graph (velocity profile)?

Guys, I'm reading this Article: https://www.researchgate.net/publication/229399613_A_comparative_study_of_turbulence_models_performance_for_turbulent_flow_in_a_plane_asymmetric_diffuser You can...

07 August 2019 9,218 9 View

Could any fuel burn in any kind of combustion (detonation, deflegration, transient)?

Thinking that if any fuel could burn in any kind of combustion. Is it possible in real and or theoretically? how can you show it? how to find the ambient parameters to do it? e.g. H2 and O2 in...

01 February 2019 8,177 3 View

Why do/es a residual/residuals start from a big non-zero magnitude sometimes?

Guys, Sometimes after initializing the problem in Fluent and triggering the calculate button, a residual/residuals start from a big non-zero magnitude. For instance, to me, it in many cases...

01 January 1970 9,440 9 View

Tell us your experience on stiffness of solution for chemical reaction modeling?

Sometimes we hear somethings on stiffness problem of solution for chemical reaction modeling. https://en.wikipedia.org/wiki/Stiff_equation There is an option in Fluent software to figure it...

01 January 1970 1,314 3 View

Does the pressure(-600 mmHg) affects pH?

When I conducted the degassing experiment using decompression under anaerobic condition(and I used ferrous based chelating agent), the oxidized ferric were observerd. So, could you tell me the...

03 March 2021 4,892 5 View

Why can't make aluminum nitride film successfully by use sputter?

We use reactive sputtering process to make aluminum nitride film, and want to make c-axis aluminum nitride film on a silicon substrate, but the crystal orientation cannot be seen with...

03 March 2021 7,975 3 View

Is there any test to determine the cardiovascular risk of patients with obesity? from the perspective of obesity?

We found tests to determine cardiovascular risk taking into account lipid profile, blood pressure, age, history of diabetes, other laboratories. But when weight is involved, there is a paradox. I...

02 March 2021 6,036 1 View

Why are the velocities so high in my Boussinesq approximation Fluent simulation?

Hello, I have a mechanism where air rises due to convective flows. In this simulation, nothing is driving the air except this. I understand that the Boussinesq approximation only works for small...

02 March 2021 4,910 3 View

Why almost every element would be metallized in sufficiently high pressure and low temperature?

(This statement is from wikipedia, BTW). What is so special about metallic bond that is limiting high-P low-T state of a matter (as long as individual atoms exist, not white dwarf of neutron star...

02 March 2021 3,309 2 View

Sutter electrode holder leaking after applying positive pressure. How to fix?

I am using a Sutter electrode holder for my patch clamp experiments, but I'm having trouble keeping positive pressure inside my electrode due to a leak out of the back of the holder. I have added...

02 March 2021 5,829 1 View

What SPSS analysis should I run with one IV (with two levels) and two DVs?

Hi, I am trying to figure out which test would be most appropriate to run for the following question: Is there a difference in task blood pressure between smokers and non-smokers? There are two...

01 March 2021 8,235 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

How can I edit suggested publications?

Hi there! I regularly receive suggestion about papers and authors that are totally out of my area. Does anybody know how I can fix this? Thank you!

01 March 2021 9,574 4 View

What is Flat Lens Antenna?

28 February 2021 5,433 3 View