Krishna Chandran

9 Questions 14 Answers 0 Followers

Questions related from Krishna Chandran

Higher order convection schemes for cell-centred unstructured finite volume formulation?

The deferred correction method is a popular approach that enables to implement higher order (HO) convection schemes without losing out on stability issues such as diagonal dominance when solved...

15 February 2024 2,756 0 View

Venkatakrishnan's limiter delta form?

I am new to limiters in FVM CFD so pardon me if its a blunder. Was curious about Venkatakrishnan's limiter (first image) that is industry standard in many commercial CFD solvers. He came up with...

15 February 2024 5,806 2 View

Can anyone suggest some open source Adaptive Mesh Refinement (AMR) Grid generators?

I have an in-house C++ FVM code. I want to know some open-source AMR-based grid generators to link to my FVM solver. Thanks.

16 January 2023 1,573 4 View

Which storage format is better for SPAI preconditioner for parallel computing, CCS or CRS ?

For computing Sparse Approximate Inverse preconditioner (SPAI) using Frobenius norm minimization which storage format should we follow Compressed Column Storage (CCS) or Compressed Row Storage...

10 May 2017 7,483 1 View

Can anyone suggest me references for Carreau-Yasuda model for validation of fully developed Non-Newtonian flow inside a 3D Pipe ?

Can anyone suggest me references for Carreau-Yasuda model for validation of fully developed Non-Newtonian flow inside a 3D Pipe ? I want to know the fully developed velocity profile.

20 December 2016 7,655 2 View

Is there a closed-form or analytical solution for the eigenvalues of symmetric pentadiagonal Toeplitz matrix ?

I know that there exist a closed form solution for the eigenvalues of tridiagonal Toeplitz matrix but how about a symmetric pentadiagonal Toepltz matrix.

14 April 2016 5,061 7 View

Is it necessary for SSOR preconditioning that the matrix A needs to be symmetric ?

I have a collection of large sparse matrices of the order of 1 million x 1million and above obtained from CFD based application problems. The matrix A (in CSR) is normalised with respect to the...

27 October 2015 2,876 3 View

Which is the best method to compute the smallest singular value of a large sparse matrix?

I have a large sparse non-symmetric matrix of dimension 1.5 million x 1.5 million. I am using inverse power method to find the smallest singular value of the matrix using GMRES+ILU as a matrix...

31 July 2015 1,854 9 View

How come Ansys Fluent converges so fast?

How come Ansys Fluent simulation converges so fast? I tried to simulate a mixed convection flow problem with my code a student version of Ansys Fluent using the same mesh and same algorithm for...

01 January 1970 5,698 8 View