How does change in excitation current cause change in output voltage in RTD sensor like silicon diode?

Currently I have prepared a circuit which gives me constant current source of 10 micro ampere. 2 Volt DC source and 200 k Ohm resistor in series. What if the output volt of DC power supply...

05 June 2016 7,070 4 View

Why FEM is not so popular for fluid flow involving heat transfer problems?

Currently FVM is most popular method to solve fluid flow involving heat transfer problems and related physics. On the other hand, FEM is mostly suitable and popular for structural analysis.

06 July 2015 7,484 0 View

What is the meaning of numerical diffusion?

What is the meaning of numerical diffusion? How to reduce or avoid it?

04 May 2015 7,724 3 View

Which are the stable iterative numerical methods?

Currently I am using Gauss Siedel Iterative method to solve CFD equations. I am facing instability problem i.e. iterations keep on increasing without change in rms value for a given variable such...

11 December 2014 8,856 14 View

What is the difference between charged pressure and mean pressure for cryocoolers?

I normally read the terms viz. charged pressure and mean pressure while browsing cryocoolers research papers. I do not understand what is the actual difference between them? How do both differ...

08 September 2014 8,224 4 View

How to solve instability issue of a numerical code based on finite volume method?

I am doing numerical modeling of pulse tube cryocooler (with oscillating pressure and temperature) with finite volume method. I have successfully implemented it with implicit scheme by use of...

07 August 2014 4,135 34 View

How to do data management while doing numerical investigations?

Currently I am doing numerical analysis of pulse tube cryocooler and dealing with various parameters keeping others constant. I am saving data of each set in my computer date wise. I want to know...

04 May 2014 8,207 1 View

What is the difference between flow coefficient and discharge coefficient for a needle valve?

I will be using a needle valve for my practical setup of project work. It is based on pulse tube cryocooler. I need to calculate the coefficient of discharge for needle valve for report purpose....

04 May 2014 7,061 7 View

Can we use the shooting method for first order equations?

I am currently doing numerical analysis of GM type Pulse Tube Cryocooler. Governing equations are a system of boundary value problems and one need to use shooting method to solve it (as per one...

02 March 2014 4,778 1 View

Can anyone help with cycle averaged mass flow rate for cyclic simulation of pulse tube refrigerator?

I am currently working on 1-D numerical simulation of pulse tube refrigerator. The governing equations are given in attachment. I have plotted results showing mass flow rate over the cycle (mass...

02 March 2014 945 0 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

Looking for Materials with high thermal expansion coefficient and high temperature resistance?

03 March 2021 8,272 1 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

After a reference from Int J Body Compos Res, can any body help?

Hi, I am after the reference below, my library says it cannot obtain a copy either locally or internationally, any help appreciated! Chris Wang ZM, Heshka S, Wielopolski L, Pi-Sunyer FX, Pierson...

03 March 2021 6,193 1 View

What is the production process of CaFe ferroalloys?

I looking for ferro calcium production process

03 March 2021 1,755 4 View