Bharat bhushan Sharma

17 Questions 27 Answers 0 Followers

Questions related from Bharat bhushan Sharma

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...

03 March 2015 2,021 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...

01 January 2015 3,886 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?

04 April 2014 7,905 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...

02 February 2014 8,146 3 View

Is it is possible to ensure unidirectional flow of gas phase in porous media by some means?

I was wondering if it is possible to make the gas phase flow in a one way direction in porous media by some artificial means.

01 January 2014 981 2 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.

12 December 2013 1,638 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...

11 November 2013 311 3 View

Is a CSF-surface tension model good for low capillary number flows ? Or do we need to take care of something else?

11 November 2013 1,881 1 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...

11 November 2013 7,948 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?

11 November 2013 192 2 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...

11 November 2013 3,668 5 View

How to model shape effect of CNT (carbon nanotube) based nanofluid on its thermal characteristics?

I have observed in literature that four ways of modeling nanofluids are there viz. 1). single phase field model, 2). mixture model ,3). eulerian-lagrangian model (Discrete Particle Model: DPM) ,...

11 November 2013 7,320 3 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.

11 November 2013 9,250 20 View

Could anyone help me with this: MPI error deadlock error with FLUENT getting hanged before MPI_FINALIZE() in first compute node?

I am calling my own function inside DEFINE_INIT() macro. When I am initialising it , FLUNET is getting hanged with error message reading: MPI application rank 0 exited before MPI_FINALIZE() with...

10 October 2013 7,711 4 View

Does any one have any idea as to how we can use FLUENT's macros defined in their header files ?

There is no explanation written in header files and there seem to be useful macros such as those in neighbour.h header files.

10 October 2013 8,733 2 View

How to simulate flow in porous wick (pores are of range micrometer) due to capillary action using FLUENT for modelling?

Fluent has its own porous media model wherein they introduce a darcy sink term in momentum equation. But it does not take into account pore size and thus modeling two-phase flow is difficult. For...

09 September 2013 6,659 1 View

Can someone suggest where to get Micro CT scan done for a porous media in India?

I wish to get my porous wick's reconstructed into 3D CAD models so that I can do meshing on them using Finite Element method. I am not aware of any place or lab in India, where I can get micro-CT...

09 September 2013 8,931 15 View