The definition of hazard area, centered inside the LNG stations, is essential for risk assessment in LNG industry. In this study, computational fluid dynamics (CFD) simulations have been conducted for the two main LNG hazards, LNG flammable vapor dispersion and LNG pool fire radiation, to determine the hazard exclusion area. The spatial and temporal distribution of hazard in complex spill scena...

We propose a novel model for curtain real-time animation, which not only significantly reduces the time of rendering, but is also able to maintain visually appealing results. Conventional physically based models for cloth simulations are typically dense sheets of interwoven strings, with particles of finite mass at the intersections. While it seems to be an accurate model for cloth, it also imp...

The last decade has seen an increasing interest in developing and employing service robots for building maintenance. Cleaning the curtain walls of high-rise buildings is always very dangerous and strenuous. This paper describes three different kinds of cleaning robots developed by the authors cooperated with the researchers in Robotics Institute of BeiHang University. Sky Cleaner 3 for the glas...

This paper discusses field tests developed by the Getty Conservation Institute to evaluate injection grouts for comparison and quality control of materials and mixtures. Field test methods discussed include injection with syringe, flow with syringe, expansion and bleeding, wet density, drying shrinkage, and final setting time. Four commercial grouts and an ICCROM grout with four modified versio...

The worldwide use of precast concrete frames leads to an increase in the need for the investigation of efficient precast connections, particularly in the seismic regions. The current paper provides a numerical and experimental study on a dry precast connection. Experiments were conducted to validate the finite element method in the laboratory of the University of Science and Culture. To verify ...

Households provide environments that encourage the formation of microbial communities, often as biofilms. Such biofilms constitute potential reservoirs for pathogens, particularly for immune-compromised individuals. One household environment that potentially accumulates microbial biofilms is that provided by vinyl shower curtains. Over time, vinyl shower curtains accumulate films, commonly refe...

In this study, the engineering background of No. 2 complex connecting passage Binhu Road Station/Jinhu Square Station Nanning Metro Line 3 is investigated, where artificial ground freezing technique adopted. A three-dimensional finite element model established to investigate temperature development frozen soil curtain, with a simulation dynamic evolution frosted curtain. The validated by compar...