Multiscale gas flows appear in many fields and have received particular attention in recent years. It is challenging to model and simulate such processes due to the large span of temporal and spatial scales. The discrete unified gas kinetic scheme (DUGKS) is a recently developed numerical approach for simulating multiscale flows based on kinetic models. The finite-volume DUGKS differs from the classical kinetic methods in the modeling of gas evolution and the reconstruction of interface flux. Particularly, the distribution function at a cell interface is reconstructed from the characteristic solution of the kinetic equation in space and time, such that the particle transport and collision effects are coupled, accumulated, and evaluated in a numerical time step scale. Consequently, the cell size and time step of DUGKS are not passively limited by the particle mean-free-path and relaxation time. As a result, the DUGKS can capture the flow behaviors in all regimes without resolving the kinetic scale. Particularly, with the variation of the ratio between numerical mesh size scale and kinetic mean free path scale, the DUGKS can serve as a self-adaptive multiscale method. The DUGKS has been successfully applied to a number of flow problems with multiple flow regimes. This paper presents a brief review of the progress of this method. Read more.
Featured article: Progress of discrete unified gas-kinetic scheme for multiscale flows
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On behalf of the editorial board, we are honored to announce the launch of a new journal, Advances in Aerodynamics (AIA), and we are very pleased to share with you our vision for the development of this journal. AIA is an international peer-reviewed open access journal which publishes high quality papers with originality, novelty, and significant contributions to the progress in aerodynamics. The journal will provide authors with an open and fair platform to promote their research and identify themselves in the aerodynamics community. Read more.
Advances in Aerodynamics (AIA) is aimed to report the scientific and technological advances in aerodynamics from the aspects of academic research, industrial development and engineering applications, and to provide a platform for ideas exchange and discussion in this fast-changing field. The journal welcomes reviews and regular papers of novel studies on aerodynamic science and engineering. The topics include but are not limited to:
- Theoretical and Computational Aerodynamics
▪ Equilibrium and non-equilibrium flow
▪ Numerical method and validation
▪ Turbulent flow modeling and simulation
▪ Multiple physical field simulation
- Experimental Aerodynamics
▪ Wind tunnel experiments
▪ Propulsion and combustion
▪ Flow visualization
▪ Measurement and control techniques
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▪ Buildings and bridges
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▪ Renewable energies
▪ Environmental wind engineering
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- ISSN: 2524-6992 (electronic)