How do you apply absorbing boundary conditions/PML in weighted residual methods or weak formulations?

More Pankaj K Mishra's questions See All

What are some international post-doctrol fellowships in (or related) the field of Applied Maths / Scientific Computing / Computational Geoscience?

If possible, kindly mention the tentative deadlines and links.

11 December 2016 4,318 4 View

In the context of RBF interpolation, can cubic RBF lead to solution of singular system?

Rocha [1] claims that there is an example of cubic RBF giving singular system in Powell's book. But I did not find it there. In chapter 3 (p.30-31) of Hubbert's book [2], they claim it happens but...

03 April 2016 9,842 2 View

Why small shape parameter is recommended in radial basis function (RBF) interpolation and application?

I would like to initiate a discussion on the role of shape parameter in RBF interpolation and applications. By shape parameter, I mean the one in new convention $\epsilon$ as suggested by Prof. G...

31 December 2015 7,024 6 View

While suggesting reviewers for my manuscript, what are the points I should keep in mind?

While suggesting reviewers for my manuscript, what are the points I should keep in mind? I want to know some insider's view.

10 November 2015 6,227 2 View

Language for Scientific Computing: Python / C++ / Fortran 90 / MATLAB ? Which one do you prefer & why ?

I want to know what is people's choice for scientific computing as well as pro and cons of different languages for scientific computing.PS: I know MATLAB, C, Fortran 90 & Python. I want to go...

08 September 2015 7,969 9 View

How to cite my under review research paper ?

Suppose I have developed an algorithm or improved an existing one and sent it for publication and the paper is under review. It needs say one year to get published. Now I want to send this second...

08 September 2015 4,276 15 View

Should I cite/acknowledge open source softwares ?

I use UBUNTU , Gfortran, GMT, gnuplot , MPI, GNU Octave and several open source projects. I wonder if I should cite /acknowledge them somehow, because their contribution is very useful. Is there...

03 April 2014 6,717 3 View

What is the advantage of Meshfree Methods over Finite Element / FInite difference method?

MeshFree methods take more time and provide similar accuracy (sometimes less) as the Finite Difference method?? ( Turned out, it's not true in general. RBF collocation are faster as pointed out by...

03 April 2014 8,559 10 View

What are the minimum requirements to perform GPU programming on a Laptop ?

Seeking an advice on this.

01 February 2014 9,146 3 View

What does 'eps' in MATLAB mean? What is the value of it?

c = all(b>=-100*eps); b is a matrix I already have. what can you say about matrix c? 2.2204e-16 is the value of eps which command window shows.

31 December 2013 637 7 View

Problems about acousto-optic coupling in Comsol, how to check whether the moving mesh is correct?

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13 August 2024 9,795 0 View

How can I prepare virus for a TEM or SEM imaging?

I have virus (viral hemorrhagic septicemia virus) in suspension and the experiment will not involve cells. What level of TCID50 is preferred?

11 August 2024 3,115 1 View

Baseline drift in HPLC? What causes this?

Hello, Why do i see this baseline drift when i compare my blank (black) to the sample (blue)? Any suggestions as to why this happened? Thank you!

11 August 2024 3,770 4 View

What is the difference between mathematical R^4 space and physical 4D unit space?

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10 August 2024 6,678 14 View

Handling Missing Data and Building a Predictive Model with Incomplete Information ?

I am developing a predictive model for a water supply network that involves 20 influencing points. However, I only have historical data for 10 out of these 20 points. I would like to know how to...

10 August 2024 4,005 2 View

Is it possible to use the Fused Deposition Modeling (FDM) to additively manufacture interconnected porous structure generation of >100-200 micrometer?

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09 August 2024 7,892 0 View

How to define an anisotropic material with asymmetric elastic compliance/stiffness matrix in ANSYS APDL?

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09 August 2024 5,048 2 View

How to confirm the site-directed mutagenesis result without performing NGS?

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08 August 2024 4,645 2 View

How to calculate CCS for Sodiated adduct ions and Multiply Charged Ions?

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08 August 2024 8,329 0 View

How can I apply boundary conditions in an orthotropic steel deck numerical model using ABAQUS software?

I am trying to simulate vehicular loading on an orthotopic steel deck bridge section in ABAQUS software. The red arrow mark in the attached figure indicates the direction in which the vehicle will...

08 August 2024 719 0 View

Bo Qiang

I've never done it myself but the following link seems to be a good starting point:

http://komatitsch.free.fr/README_seismic_cpml.html

Manicka Dhanasekar

Infinite elements in ABAQUS is helpful

Pankaj K Mishra

@Bo : Thank you ! I had this reference still could not apply this in my code. Wanted some other reference.

@Manucka : I am making my own code. Source codes of ABAQUS are open source ?

Unfortunately, ABAQUS is not a free source code; educational and research institutions subscribe to ABAQUS license - therefore, my students and I are able to use them.

I think the website has some Fortran code. That should give you some idea how to implement them.

@Bo - Sir ! I have used those codes, they all are in time domain. Nothing in weak form

Sorry, I overlooked that. I thought you are working on the explicit form. I am not very sure how to formulate pml in week form. Maybe the attached doc can help a little bit.