Un-Hong Wong

• Doctor of Engineering
• Lecturer at Macao Polytechnic University

This research endeavors to examine the impact of Chat Generative Pre-trained Transformer (ChatGPT) on the education system, specifically in the realm of academia and the challenges that it poses. The incorporation of ChatGPT into academic practices may necessitate a reevaluation of current assessment and evaluation systems. The integration of ChatG...

In an accident such as gas explosion, the flying debris is most harmful to human body compare to the blast wave. Fluid-structure interaction is indispensable in analysis the dynamics of explosions, which is important in life-saving and disaster prevention. In this paper, a large-scale fluid-structure interaction simulation of debris driven by blast...

Numerical simulations of fluids including computational fluid dynamics (CFD) and magnetohydrodynamics (MHD) have been powerful tools in many engineering and research area, but they are computationally expensive. In the previous decade, general-purpose computing on graphics processing units (GPGPU) has been widely used in accelerating the numerical...

Modern graphics processing units (GPUs) have been widely utilized in magnetohydrodynamic (MHD) simulations in recent years. Due to the limited memory of a single GPU, distributed multi-GPU systems are needed to be explored for large-scale MHD simulations. However, the data transfer between GPUs bottlenecks the efficiency of the simulations on such...

Global magnetohydrodynamic (MHD) models play the major role in investigating the solar wind–magnetosphere interaction. However, the huge computation requirement in global MHD simulations is also the main problem that needs to be solved. With the recent development of modern graphics processing units (GPUs) and the Compute Unified Device Architectur...

In this paper, we model the reflectance of the lunar regolith by a new method combining Monte Carlo ray tracing and Hapke's model. The existing modeling methods exploit either a radiative transfer model or a geometric optical model. However, the measured data from an Interference Imaging spectrometer (IIM) on an orbiter were affected not only by th...

In this paper, a Monte Carlo ray tracing model for lunar soils is proposed for the purpose of simulating the reflection of electromagnetic radiation in the lunar surface. The reflectance spectrum is calculated using Hapke model with the LSCC data.

Chang'E-1 is the first Chinese unmanned lunar orbiter which contains eight sets of payloads including two solar wind ion detectors as one set of them. These solar wind ion detectors had obtained tens of gigabytes of solar wind ion data, which are very important for analyzing the lunar plasma environment. It is expected that an intuitive visualizati...

Smoke simulation is one of the interesting topics in computer animation and it usually involves turbulence generation. Efficient generation of realistic turbulent flows becomes one of the challenges in smoke simulation. Vortex particle method, which is a hybrid method that combines grid-based and particle-based approaches, is often used for generat...

Turbulence modeling has recently drawn many attentions in fluid animation to generate small-scale rolling features. Being one of the widely adopted approaches, vorticity confinement method re-injects lost energy dissipation back to the flow. However, previous works suffer from deficiency when large vorticity coefficient ε is used, due to the fact t...

Direct volume rendering has been an important technique for visualizing volume data. An unobstructed view on the inspected features of interest can help the user to get the insight of the volume data being explored. In this paper an exploratory volume visualization framework named Probe-Volume is presented. Probe-Volume provides a moveable and size...

The smoothed particle hydrodynamics (SPH), which is a class of meshfree particle methods (MPMs), has a wide range of applications from micro‐scale to macro‐scale as well as from discrete systems to continuum systems. Graphics hardware, originally designed for computer graphics, now provide unprecedented computational power for scientific computatio...

Direct volume rendering has been widely used by physicians, scientists, and engineers in a variety of applications. In a direct volume rendering process, transfer functions are used to specify the relationships between volume data values and optical properties in order to reveal inner structures in a volume. However, trial-and-error is one of the w...

Magnetohydrodynamic (MHD) simulations based on the ideal MHD equations have become a powerful tool for modeling phenomena in a wide range of applications including laboratory, astrophysical, and space plasmas. In general, high-resolution methods for solving the ideal MHD equations are computationally expensive and Beowulf clusters or even supercomp...

Direct volume rendering (DVR) has been widely used by physicians, scientists, and engineers in many applications. There are various DVR algorithms and the images generated by these algorithms are somewhat different. Because these direct volume rendered images will be perceived by human beings, it is important to evaluate their quality based on huma...

Demonstrations play a major role in education process. Although many specimens are readily available, particularly in medicine and biology, demonstrations are commonly performed by showing these static specimens to medical or biological students. Interactive demonstrations can significantly impacts learning. An interactive system for visualizing 3D...

Demonstrations play a major role in education process. Although many specimen are readily available, particularly in medicine and biology, demonstrations are commonly performed by showing these static specimen to medical or biological students. Interactive demonstrations can significantly impacts learning. An interactive system for visualizing 3D h...