Our Vision
We create a game-changing computational capability to reconstruct multiscale transport phenomena in gases and solids and enable a priori knowledge for emerging multiscale technologies. We bridge gaps among physics, applied mathematics, scientific computing and practical engineering-design simulation.
Research
Multiscale computation
We put forward a general synthetic iterative scheme (GSIS) for solving kinetic equations and simulating multiscale gas/phonon transport reliably. The scheme has the merits of fast convergence and asymptotic preserving, consequently reducing computational resource consumption by several orders of magnitude.
Discontinuous Galerkin method
We develop optimal solution strategies for the high-order discontinuous Galerkin methods adopted in the GSIS to make the simulation tool robust and economical for practical engineering-design simulations.
Physics of transport phenomena
We utilise the developed methods and models to enable a priori solutions for the rarefied gas dynamics and non-Fourier solid heat conduction in emerging multiscale technologies such as lab-on-chip devices, carbon neutrality, next-generation vaccines, micro air vehicles, and high-altitude flights.
Thermo-chemical relaxation
We develop sophisticated numerical methods to understand the nonequilibrium thermo-chemical relaxation that dictates the flow dynamics around re-entry capsules, allowing optimal designs of aerodynamic shape and heat shield.
Featured Publications
- W Su, L Zhu, L Wu (2020). Fast convergence and asymptotic preserving of the general synthetic iterative scheme. SIAM Journal on Scientific Computing 42(6): B1517-B1540. [pdf][doi]
- W Su, L Zhu, P Wang, Y Zhang, L Wu (2020). Can we find steady-state solutions to multiscale rarefied gas flows within dozens of iterations? Journal of Computational Physics 407: 109245. [pdf][doi]
- W Su, P Wang, Y Zhang, L Wu (2020). Implicit discontinuous Galerkin method for the Boltzmann equation with full collision operator. Journal of Scientific Computing 82: 39. [pdf][doi]
Recent News
September 1, 2023 Welcome new group members >>
June 22, 2022 Wei will join HKUST >>
June 22, 2022 Search for Students >>