Does surfactant effect on speed of NaOH diffusion?

I have done an experiment in which I add NaOH (pH=13) to water (within a maze geometry). When I use pure water as solution, NaOH diffusion through the maze is too slow (almost nothing) while if I...

14 August 2019 1,674 6 View

if we could make artificial spin ices within superparamagnetic size range (10-30nm) how would phase transitions change? what's the effect of size?

the effect of geometrical frustration have long been studied in single domain ferromagnets known as Artificial Spin Ice typically around 200-800nm in size. but I can't find any studies that goes...

03 July 2019 9,417 17 View

How to get FFT of a nonuniformly sampled data in matlab(my data is a transient output of spice)?

I have to find FFT of difference between two voltages in my circuit. ltspice just give me FFT of one node voltage, though I transport my data to matlab and then write a code to re-sample data and...

24 May 2019 3,394 5 View

Difference between the results of implicit and explicit Eulerian models in Fluent?

Hello all I am simulating hydrogen generation in an electrolyzer compartment using Eulerian model in Fluent. The final amount of gas in the domain when the solution reaches steady-state condition...

20 January 2019 6,137 6 View

What are the best initial materials to make polymer quickly?

I am looking for a way for rapid polymerization in very mild conditions (without pressure, temprature...). Actually I have done it with N-isopropylacrylamid (monomer) , DMPA(initiator) and TMPTA...

21 August 2017 8,752 4 View

Is there any experimetal data for terminal velociy of alkans falling droplet in air?

06 September 2015 236 5 View

error in running a model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

error in modelling model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

MGL tools

20 June 2021 0 0 View

i have some problem with chtMultiRegionSimpleFoam

--> FOAM FATAL ERROR: Maximum number of iterations exceeded From function Foam::scalar Foam::species::thermo::T(Foam::scalar, Foam::scalar, Foam::scalar, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar) const) const [with Thermo = Foam::hConstThermo >; Type = Foam::sensibleEnthalpy; Foam::scalar = double; Foam::species::thermo = Foam::species::thermo >, Foam::sensibleEnthalpy>] in file /home/ubuntu/OpenFOAM/OpenFOAM-4.1/src/thermophysicalModels/specie/lnInclude/thermoI.H at line 66. FOAM aborting #0 Foam::error::printStack(Foam::Ostream&) at ??:? #1 Foam::error::abort() at ??:? #2 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::calculate() at ??:? #3 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::correct() at ??:? #4 ? at ??:? #5 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6" #6 ? at ??:?

24 March 2021 0 0 View

Resistor definition in Piezoelectric bimorph with ANSYS workbench

Hello, good day! I am trying to simulate similar bimorph piezoelectric harvester with below commands. However, the output power doesn't change with resistor value. Please help to find the reason. ET,10,CIRCU94,0 !SET UP RESISTOR R,1,100000 !RESISTANCE VALUE TYPE,10 !SET ELEMENT TYPE E,1,2 !CREATE RESISTOR BETWEEN NODES 1 AND 2 Thanks in advance Regards,

02 March 2021 0 0 View

The procedure compute?

02 March 2021 5,204 3 View

Is there a powerful system for the security of the systems distributed on IoT systems?

Is there a powerful system for the security of the systems distributed on IoT systems?

02 March 2021 3,858 10 View

Which is the most convenient manufacturing software for Additive Manufacturing?

Which tools can be used to generate machine codes for additive manufacturing?

02 March 2021 7,220 2 View

Which is suitable for use with Python? MySQL or SQL Server?

Which is suitable for use with Python? MySQL or SQL Server? What is your suggestion?

01 March 2021 3,422 3 View

If you haven't computer? how you show the photons to pupils?

Educational Process

01 March 2021 1,827 1 View