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- Xiangyu Hu, Boo Cheong Khoo, Nikolaus A. Adams, F. L. Huang
- J. Comput. Physics
- 2006

- Xiangyu Hu, Nikolaus A. Adams
- J. Comput. Physics
- 2007

An incompressible multi-phase SPH method is proposed. In this method, a fractional time-step method is introduced to enforce both the zero-density-variation condition and the velocity-divergence-free condition at each full time step. To obtain sharp density and viscosity discontinuities in an incompressible multi-phase flow a new multi-phase projection… (More)

- K. K. So, Xiangyu Hu, Nikolaus A. Adams
- J. Comput. Physics
- 2012

- S. Adami, Xiangyu Hu, Nikolaus A. Adams
- J. Comput. Physics
- 2012

- Xiangyu Hu, Nikolaus A. Adams
- J. Comput. Physics
- 2006

A multi-phase smoothed particle hydrodynamics (SPH) method for both macroscopic and mesoscopic flows is proposed. Since the particle-averaged spatial derivative approximations are derived from a particle smoothing function in which the neighboring particles only contribute to the specific volume, while maintaining mass conservation, the new method handles… (More)

- K. K. So, Xiangyu Hu, Nikolaus A. Adams
- J. Comput. Physics
- 2011

- Xiangyu Hu, Nikolaus A. Adams, Gianluca Iaccarino
- J. Comput. Physics
- 2009

In this work, the HLLC Riemann solver, which is much more robust, simpler and faster than iterative Riemann solvers, is extended to obtain interface conditions in sharp-interface methods for compressible multi-fluid flows. For interactions with general equations of state and material interfaces, a new generalized Roe average is proposed. For single-phase… (More)

- Xiangyu Hu, Q. Wang, Nikolaus A. Adams
- J. Comput. Physics
- 2010

Article history: Received 9 November 2009 Received in revised form 13 August 2010 Accepted 14 August 2010 Available online 20 August 2010

- M. Meyer, A. Devesa, Stefan Hickel, Xiangyu Hu, Nikolaus A. Adams
- J. Comput. Physics
- 2010

We propose a conservative, second-order accurate immersed interface method for representing incompressible fluid flows over complex three dimensional solid obstacles on a staggered Cartesian grid. The method is based on a finite-volume discretization of the incompressible Navier–Stokes equations which is modified locally in cells that are cut by the… (More)

- Xiangyu Hu, Nikolaus A. Adams
- J. Comput. Physics
- 2009

A constant-density approach, which corrects intermediate density errors by adjusting the half-time-step velocity with exact projection, is proposed for the multi-phase SPH method developed in our previous work (J. Comput. Physics, 227:264-278, 2007). As no prescribed reference pressure is required, the present approach introduces smaller numerical viscosity… (More)