Can anyone here suggest me good book for stratification of PDEs or ODEs? How to stratify the system of ODEs or PDEs?

I need to understand the concept of stratification of ODEs and PDEs. I want to read and understand more on stratification. Please suggest me some books or articles which may help me to...

11 December 2018 5,361 0 View

What is the maxima and minima for the function x/(x+y) ?

09 October 2015 9,826 4 View

How to use indexed elements like a (i, j) in MATHEMATICA?

I am working with set of differential equations, where I need repeated iterations. I need to number the steps as double or triple index /suffixes. I would like to know how to do it.

11 December 2013 9,888 4 View

What is bilateral Laplace Transform?

How to define bilateral laplace transform? What is application of bilatrral LT? Can anyone suggest good material for studying bilateral Laplace Transform?

06 July 2013 1,598 4 View

Difference equations

Can any body suggest any good book for Difference equation? I want to study the theory and application of difference equations.

11 December 2012 245 8 View

What is symmetry of odd function?

If f(x) is odd function in (-c, c) then what one can say about symmetry of f(x) ?

11 December 2012 7,809 6 View

What is the order of a permutation?

We consider the order of cycle or transpotion but is there any book that will give idea of order of permutation.

10 November 2012 1,651 3 View

What is integral of (secx)^3 wrt x ?

If limits considered from 0 to (pi/4) and without limits also.

10 November 2012 9,954 9 View

How to use adomian decomposition method for solving odes?

Odes

10 November 2012 7,424 6 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

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 is the production process of CaFe ferroalloys?

I looking for ferro calcium production process

03 March 2021 1,755 4 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

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