Running resistanve of a heavy duty truck/vehicle/lorry?

It is possible to find data regarding the running resistance of a heavy duty truck?

06 July 2018 9,707 0 View

Can someone clear out this contradiction regarding ab-dq transformation and their angular relation?

Hi, In the book "Power system dynamics: stability and control" by Jan Machowski, Janusz W. Bialek, and James R. Bumby, on page 117-118, in equations (3.166)-(3.167) and in figure 3.36, the...

06 July 2018 3,138 20 View

Modeling approaches when the QSS/DAE approach is not accurate enough?

Hi, I'm looking for modeling approaches when the QSS/DAE approaches are not accurate enough in power system dynamics. For example when both "slower" dynamics as machine transients x' are...

01 February 2018 4,127 6 View

Is anyone considering why people talk so little about solar power with mirrors and steam turbines nowadays?

Is anyone considering why people talk so little about solar power with mirrors and steam turbines nowadays? Such solutions should give more opportunity for load control, frequency response, etc....

31 December 2017 7,426 5 View

Anyone that knows about methods of identifying multi-modality of samples of distributions? Or methods of estimating number of modes?

Anyone that knows about methods of identifying multi-modality of samples of distributions? Or methods of estimating number of modes and their respective borders?

11 December 2016 8,728 2 View

Alternative to Edgeworth series expansion?

I have read that a drawback with Edgeworth series expansion is that "... they can be inaccurate, especially in the tails, due to mainly two reasons: (1) They are obtained under a Taylor series...

09 October 2016 6,338 3 View

Where is it possible to buy single-phase AC synchronous motors for lab purposes?

Where is it possible to buy single-phase AC synchronous motors for lab purposes?

02 March 2016 5,245 7 View

Can someone help with Polynomial matrix equations?

Hi, I'm getting old and I'm not sure whether or not I've learnt any theories about solving polynomial matrix exiations, like the second order equation XTAX+BX+C=0. Can anyone fresh my mind up or...

07 August 2015 216 3 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

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