What are some methods of making very thin grids?

I am working on gridded ion thrusters.Presently we are using 1mm thick and 100 mm dia disk for beam extraction which has around 1000 1-2mm holes in it. The manufacturing of the grids is a...

09 October 2018 6,928 11 View

How can I define a Plasma in SIMION8.0?

I wish to study the extraction of positive xenon Ions through grids at different voltages from a plasma chamber.How can I define a plasma of a particular temperature in SIMION as I think it can...

07 August 2018 1,646 0 View

How can I create .GEM file in SIMION8.0?

I wish to create complicated geometries with nonstandard shapes. I wish to write geometry files for those shapes and want to know how can I write them and load them in the workbench.

01 January 1970 2,857 0 View

Will water boil in my case where maximum temperature of surface is around 400Degree?

I have to extract heat from a surface by cooling pipes of 6mm diameter with water flow.I wish to know whether the water inside the pipes will boil and cause Nucleate boiling effect as in case of...

01 January 1970 3,046 7 View

How to carry transient analysis in ANSYS?

I have calculated the steady state heat analysis for the Faraday Cup Materiel (Copper) and the maximum temperature reached on the surface is around 400-450 Degree Celsius. Is it safe to operate it...

01 January 1970 7,967 0 View

How to decide how much coating should I keep on the surface of my detector?

01 January 1970 3,570 3 View

How can I manually calculate the water flow rate required to cool a cylindrical geometry(Copper) heated by a 10kW beam?

I wish to manually calculate the flow rate of water required to cool a cylindrical cup shaped object which is being heated by 10kW beam? Can anyone tell the equations or methods to calculate the...

01 January 1970 6,777 11 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

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 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

Physics: Why do we describe light by referring to its wavelength, but microwaves and radar pulses by referring to their frequency?

In physics, the description of the properties of light generally refers to its wavelength (nm), while in the range of microwaves and radio waves we refer to the frequency of a signal (e.g. kHz or...

03 March 2021 1,682 3 View

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 3 View

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View