Accurate initial conditions for cosmological N-body simulations: minimizing truncation and discreteness errors
Inaccuracies in the initial conditions for cosmological N-body simulations could easily be the
largest source of systematic error in predicting the non-linear large-scale structure. From the …
largest source of systematic error in predicting the non-linear large-scale structure. From the …
Direct numerical simulation and wall-resolved large eddy simulation in nuclear thermal hydraulics
I Tiselj, C Flageul, J Oder - Nuclear Technology, 2020 - Taylor & Francis
The critical review discusses the most accurate methods for description of turbulent flows:
the computationally very expensive direct numerical simulation (DNS) and slightly less …
the computationally very expensive direct numerical simulation (DNS) and slightly less …
Status, perspectives, and added value of high fidelity simulations for safety and design
With the increase in computational power, High Fidelity (HiFi) simulations become
increasingly important to nuclear thermal hydraulics for fundamental understanding of …
increasingly important to nuclear thermal hydraulics for fundamental understanding of …
[HTML][HTML] Comparison of dealiasing schemes in large-eddy simulation of neutrally stratified atmospheric flows
F Margairaz, MG Giometto… - Geoscientific Model …, 2018 - gmd.copernicus.org
Aliasing errors arise in the multiplication of partial sums, such as those encountered when
numerically solving the Navier–Stokes equations, and can be detrimental to the accuracy of …
numerically solving the Navier–Stokes equations, and can be detrimental to the accuracy of …
An exact and fast computation of discrete Fourier transform for polar and spherical grid
Numerous applied problems of two-dimensional (2-D) and 3-D imaging are formulated in
continuous domain. They place great emphasis on obtaining and manipulating the Fourier …
continuous domain. They place great emphasis on obtaining and manipulating the Fourier …
[PDF][PDF] Fourier spectral/hp element method: investigation of time-stepping and parallelisation strategies
A Bolis - 2013 - Citeseer
As computer hardware has evolved, the time required to perform numerical simulations has
reduced, allowing investigations of a wide range of new problems. This thesis focuses on …
reduced, allowing investigations of a wide range of new problems. This thesis focuses on …
The partial fast fourier transform
JC Bowman, Z Ghoggali - Journal of Scientific Computing, 2018 - Springer
An efficient algorithm for computing the one-dimensional partial fast Fourier transform f_j= ∑
_ k= 0^ c (j) e^ 2 π ijk/N F_k fj=∑ k= 0 c (j) e 2 π ijk/NF k is presented. Naive computation of …
_ k= 0^ c (j) e^ 2 π ijk/N F_k fj=∑ k= 0 c (j) e 2 π ijk/NF k is presented. Naive computation of …
A dynamic-solver–consistent minimum action method: With an application to 2D Navier–Stokes equations
This paper discusses the necessity and strategy to unify the development of a dynamic
solver and a minimum action method (MAM) for a spatially extended system when …
solver and a minimum action method (MAM) for a spatially extended system when …
[HTML][HTML] An efficient parallel spectral code for 3D periodic flow simulations
Numerical results from a spectral code are the defacto standard in CFD community for many
fluid flow problems. Their popularity is motivated by the highest accuracy coupled with …
fluid flow problems. Their popularity is motivated by the highest accuracy coupled with …
Out-of-core diffraction algorithm using multiple SSDs for ultra-high-resolution hologram generation
The diffraction calculation is critical in computer-generated holography (CGH). However, it
becomes a performance bottleneck when generating ultra-high-resolution holograms due to …
becomes a performance bottleneck when generating ultra-high-resolution holograms due to …