Registered Data

[CT088]

  • Session Time & Room
    • CT088 (1/1) : 4D @E504 [Chair: Martin Hanek]
  • Classification
    • CT088 (1/1) : Computer aspects of numerical algorithms (65Y) / Applications of statistics (62P) / Biology and other natural sciences (92-)

[00836] Reynolds-blended weights for BDDC in applications to Navier-Stokes equations

  • Session Time & Room : 4D (Aug.24, 15:30-17:10) @E504
  • Type : Contributed Talk
  • Abstract : We solve incompressible Navier-Stokes equations by the finite element method with one step of the Balancing Domain Decomposition by Constraints (BDDC) method. This method requires a scaling operator at the interface between subdomains. We introduce a new interface scaling tailored to Navier-Stokes equations. The weights in this averaging consider a local Reynolds number. This Reynolds-blended scaling is compared with several existing approaches on 3D lid-driven cavity and backward-facing step problems.
  • Classification : 65Y05
  • Format : Talk at Waseda University
  • Author(s) :
    • Martin Hanek (Czech Technical University in Prague, Institute of Mathematics of the Czech Academy of Sciences)

[02267] A Massively Parallel Performance Portable Free Space Spectral Poisson Solver for Beam and Plasma Physics Problems

  • Session Time & Room : 4D (Aug.24, 15:30-17:10) @E504
  • Type : Contributed Talk
  • Abstract : Recently, a new fast algorithm for computing volume potentials has been proposed by Vico, Greengard, and Ferrando, which provides a spectral accuracy free-space Poisson equation solver, useful for plasma and beam physics. We write a parallel performance portable implementation in the IPPL library, using the Exascale Computing Project's heFFTe and Kokkos libraries, and MPI for parallelization. A comparison with the traditional Hockney-Eastwood algorithm manifests the memory benefits of using the new algorithm, especially on GPUs.
  • Classification : 65Y05, 78A30, 35Q61, 65K05, 65N80
  • Format : Talk at Waseda University
  • Author(s) :
    • Sonali Mayani (Paul Scherrer Institute)
    • Antoine Cerfon (NYU)
    • Matthias Frey (University of St. Andrews)
    • Veronica Montanaro (Paul Scherrer Institute)
    • Sriramkrishnan Muralikrishnan (Jülich Supercomputing Centre)
    • Andreas Adelmann (Paul Scherrer Institute)

[01997] Robust continuation method for computing solution curves with critical points

  • Session Time & Room : 4D (Aug.24, 15:30-17:10) @E504
  • Type : Contributed Talk
  • Abstract : To better compute the solution curve of challenging problems, numerical continuation methods have proved to be a very efficient tool. However, these methods can still lead to undesired results, particularly near critical points. This paper will therefore present a robust continuation method that will include two key aspects to solve difficult problems: detection of problematic regions during the solution process and additional steps to deal with them. Numerical examples will be presented.
  • Classification : 65Y20, 65Z05, 74S05
  • Format : Online Talk on Zoom
  • Author(s) :
    • Sophie Leger (Université de Moncton)

[00947] Statistical analysis of neonatal mortality predictors in Ghana

  • Session Time & Room : 4D (Aug.24, 15:30-17:10) @E504
  • Type : Contributed Talk
  • Abstract : In this study, we identify and investigate the main factors influencing newborn mortality in the Ghanaian locality and predict the occurrence of future infant mortality based on the 2017 Demographic and Health Survey data using logistic regression. Our work shows that the child’s weight and sex have a strong correlation with its survival. The study reveals that mortality is more than 50% greater in underweight children and also, 62.7% infant deaths happen in infant males.
  • Classification : 62Pxx, 92-11, 92-08, Bio Statistics
  • Format : Online Talk on Zoom
  • Author(s) :
    • Elizabeth Dufie Amankwah (Kwame Nkrumah University of Science and Technology)
    • Juliet Amegble Richardson (Kwame Nkrumah University of Science and Technology)
    • Solomon Kyei Mensah (Kwame Nkrumah University of Science and Technology)

[00116] Multi-Scale Modelling of three phase lag (TPL) of lung cancer during cryosurgery

  • Session Time & Room : 4D (Aug.24, 15:30-17:10) @E504
  • Type : Contributed Talk
  • Abstract : On the basis of the study of cryosurgery with mathematical modelling we discuss about the study related to non-Fourier bio-heat transfer available numerically with various boundary conditions for frozen and non frozen region. By the CAD/ANSYS study a specific region is developed for the tumor detected area. We’ll elaborate three phase lag (TPL) bio-heat transfer model to analysis of the temperature distribution in living tissue. By this work of mathematical modelling of cryosurgery in lung cancer to elaborate the knowledge of TPL bio-heat model by using numerical methods.
  • Classification : 92-XX, 92Bxx, 92B05
  • Format : Online Talk on Zoom
  • Author(s) :
    • Sarita Singh (Doon University Dehradun Uttarakhand IndiaDoon University Dehradun Uttarakhand )