Should I use ANSYS AQWA for Hydrostatic stiffness ?

Hello researchers, I am trying to verify a box problem (90x90x55m) which is solved in ANSYS AQWA line manual but using workbench platform. Though my values on the principal diagonal of stiffness...

11 December 2014 2,705 2 View

Empirical formula to calculate horizontal aerodynamic thrust of wind turbine ?

Is there an empirical formula to calculate horizontal aerodynamic thrust for Horizontal Axis Wind Turbine for operational and stopping condition ?

10 November 2014 4,179 5 View

How to get wind speed data record for South China Sea ?

Presently I am studying a floating offshore wind turbine in South China Sea for which I need wind speed data record for normal and extreme conditions. Please let me know if anyone has it or where...

09 October 2014 5,075 5 View

Is it correct to have a negative sign on principal diagonal in the ANSYS Aqwa hydrostatic stiffness matrix?

I have seen that when center of gravity of the model remains ABOVE center of buoyancy, a negative sign is seen in K44 and K55 terms (ref 3.1.3 AQWA Line User Manual pg 14 of 136). Is it correct...

09 October 2014 2,572 3 View

Is anyone familiar with hydrodynamic analysis of floating offshore wind turbine using TLP?

I am new to ANSYS AQWA. I found out that the undamped natural periods (without the mooring cables) is shown in .LIS file. The structure is actually a TLP floater for wind turbine (ref. attached...

09 October 2014 201 2 View

Is anyone familiar with the natural period of the system of a floating structure in ANSYS AQWA?

Is anyone familiar with the natural period of the system of a floating structure in ANSYS AQWA after analyzing hydrodynamic diffraction & hydrodynamic time response? I have modeled a Tension...

08 September 2014 4,070 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