Which one is better - dynamic van der waals theory(DVDWT) or CLSVOF for free surface flow ?

Dear All, I have no idea about DVDWT except that it is a diffuse interface model. I want to know pros and cons of using it over standard free surface models such as CLSVOF ? I was going through a...

02 March 2015 1,950 2 View

How should I treat the convective term at the boundary for high density and viscosity ratio two phase flow?

Dear All, I am facing trouble handling convective flux in a scalar transport equation for two-phase flow along wall boundary. Some wall boundary cells have low density and viscosity while the rest...

31 December 2014 3,793 12 View

Can anyone help with space and time averaged scattered data?

I have a set of data which each time instant varies with x and y location and then also varies over time periodically. I wish to average this dataset over the period. Can someone suggest how to do it?

03 April 2014 7,843 5 View

What is a suitable Symmetry Boundary Condition for two-phase flow inside porous media?

I am trying to simulate evaporation in unsaturated porous wicks. I have run two set of simulations with different geometries and have incorporated symmetry B.C inside porous region. But behavior...

01 February 2014 8,064 3 View

Software for two-phase flow in porous media which solves full navier stokes equation?

Can someone suggest some open-source softwares for modelling two-phase flow in porous media? I was trying to use FLUENT but it is not working well.

11 December 2013 1,569 7 View

How to model capillary force term in unsaturated porous media at liquid-vapor interface ?

Any reference paper or hint would be of great help. I wish to model capillary force term in porous wick. But am unable to do so as I am not aware of how to implement it. Should we modify...

10 November 2013 250 3 View

3D VOF simulation?

I wish to do 3D boiling simulation using VOF model. For that I need to know the direction split algorithm in 3D on cartesian grids. Also I need to use the least squares volume-of-fluid interface...

10 November 2013 7,875 4 View

How do we use Rudman direction split algorithm for 3-Dimensional interfacial flow ?

I am well aware of Rudman algorithm's implementation in 2D cases. But how to go for 3D? Should we just have one more case for z-direction advection? or anything special?

10 November 2013 133 2 View

How to deposit a layer of nanoparticles of definite and controlled thickness?

I wish to deposit CNT and Cu nanoparticles over a sintered Cu microporous wick and wish to maintain controlled thickness. Any suggestions or link related this is most welcome.

10 November 2013 9,179 20 View

Can vapor penetrate through porous wick to the compensation chamber in loop heat pipes (LHPs)?

During heat leak to the compensation chamber (CC) in LHP, is it possible for vapor to have leaked to CC? In a recent paper on bubble dynamics inside an idealized porous wick by Ram Ranjan et...

10 November 2013 3,609 5 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

How the parameters (such as Mw, Chemical bonds, polymer bland and so on) affect the mechanic property of polymer (such as storage, loss modulus) ?

Anyone can recommend any books on such topics? Thanks in advance.

02 March 2021 8,457 2 View