A comparative study of the DSBGK and DVM methods for low-speed rarefied gas flows

Autor: Yonghao Zhang, Lei Wu, Minh T. Ho, Jason M. Reese, Jun Li

Publikováno v: Ho, M T, Li, J, Wu, L, Reese, J & Zhang, Y 2019, ' A comparative study of the DSBGK and DVM methods for low-speed rarefied gas flows ', Computers and Fluids, vol. 181, pp. 143-159 . https://doi.org/10.1016/j.compfluid.2019.01.019

Low-speed rarefied gas flow in a lid-driven cavity is chosen as a test case in order to assess the accuracy and efficiency of both the Direct Simulation Bhatnagar-Gross-Krook (DSBGK) method and the Discrete Velocity Method (DVM) for solving the BGK k

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5dd4b64266c648b5ff49ded43852a9a9
https://doi.org/10.1016/j.compfluid.2019.01.019

Variation of molecular mean free path in confined geometries

Autor: Matthew K. Borg, Jian-Fei Xie, Duncan A. Lockerby, Livio Gibelli, Jason M. Reese, Oliver Henrich

Publikováno v: 31ST INTERNATIONAL SYMPOSIUM ON RAREFIED GAS DYNAMICS: RGD31.

This paper aims to settle disputes in the literature about the spatial variation of the molecular mean free path (MFP) in confined geometries. The MFP of a gas is determined by using both molecular dynamics (MD) and the direct simulation Monte Carlo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b5e1b7895d32dc25b93cc249f7320421
https://doi.org/10.1063/1.5119594

A novel coupling of noise reduction algorithms for particle flow simulations

Autor: David R. Emerson, Jason M. Reese, Małgorzata J. Zimoń

Publikováno v: Zimon, M J, Reese, J & Emerson, D R 2016, ' A novel coupling of noise reduction algorithms for particle flow simulations ', Journal of Computational Physics, vol. 321, pp. 169–190 . https://doi.org/10.1016/j.jcp.2016.05.049

Proper orthogonal decomposition (POD) and its extension based on time-windows have been shown to greatly improve the effectiveness of recovering smooth ensemble solutions from noisy particle data. However, to successfully de-noise any molecular syste

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d6dd411361934f6d4ceb632dbd1a06f9
https://doi.org/10.1016/j.jcp.2016.05.049

Fast spectral solution of the generalized Enskog equation for dense gases

Autor: Yonghao Zhang, Lei Wu, Jason M. Reese

Publikováno v: Wu, L, Zhang, Y & Reese, J 2015, ' Fast spectral solution of the generalized Enskog equation for dense gases ', Journal of Computational Physics, vol. 303, pp. 66-79 .

We propose a fast spectral method for solving the generalized Enskog equation for dense gases. For elastic collisions, the method solves the Enskog collision operator with a computational cost of O(Md􀀀1Nd logN), where d is the dimension of the vel

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e3f2a2c29d51e1a97377a54426d18a75
https://doi.org/10.1016/j.jcp.2015.09.034

Droplet Coalescence is Initiated by Thermal Motion

Autor: Matthew K. Borg, James E. Sprittles, Jason M. Reese, Sreehari Perumanath, Mykyta V. Chubynsky

Publikováno v: Perumanath, S, Borg, M, Chubynsky, M, Sprittles, J & Reese, J 2019, ' Droplet coalescence is initiated by thermal motion ', Physical Review Letters, vol. 122, no. 10, 104501, pp. 1-6 . https://doi.org/10.1103/PhysRevLett.122.104501

The classical notion of the coalescence of two droplets of the same radius R is that surface tension drives an initially singular flow. In this Letter we show, using molecular dynamics simulations of coalescing water nanodroplets, that after single o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::710b4139236e104e1b4d2a760da17ce9
https://pubmed.ncbi.nlm.nih.gov/30932677