S. C. M. Yu
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View article: Hierarchical fractal surface patterns for enhanced gypsum scaling resistance in membrane distillation: A computational fluid dynamics analysis
Hierarchical fractal surface patterns for enhanced gypsum scaling resistance in membrane distillation: A computational fluid dynamics analysis Open
View article: Simulation study on the effectiveness of indoor protective methods in reducing droplet transmission in a meeting room
Simulation study on the effectiveness of indoor protective methods in reducing droplet transmission in a meeting room Open
This study assesses the effectiveness of various protective measures in reducing SARS-CoV-2 transmission in a typical meeting room setting using computational fluid dynamics and a stochastic dose–response model. The findings reveal that ma…
View article: Numerical Simulation on the Transmission Risk of SARS‐CoV‐2 During a Typical Elevator Ride
Numerical Simulation on the Transmission Risk of SARS‐CoV‐2 During a Typical Elevator Ride Open
Throughout the COVID‐19 pandemic, several cases of infection associated with elevator rides have been reported. To systematically assess the risk of droplet transmission in an elevator, this study employed computational fluid dynamics (CFD…
View article: Multiscale modelling and infection probability of SARS-CoV-2 transmission in a typical lecture theatre
Multiscale modelling and infection probability of SARS-CoV-2 transmission in a typical lecture theatre Open
View article: Formation and development of the stopping vortex ring in starting jets
Formation and development of the stopping vortex ring in starting jets Open
The formation mechanism for the stopping vortex ring (SVR) and its effects on the development of starting jets have been systematically investigated. The radial inward flow near the nozzle exit, arising from the pressure difference caused …
View article: Formation and pinch-off of leading vortex ring in starting jets with uniform background crossflow
Formation and pinch-off of leading vortex ring in starting jets with uniform background crossflow Open
The formation and pinch-off of leading vortex ring in the starting jets with uniform background crossflow have been investigated numerically for Rv from 3 to 12and ∞,where Rv is the ratio of the jet velocity Uj to the velocity of backgroun…
View article: THE EFFECT OF DIFFERENT UV-C LAMP CONFIGURATIONS ON THE INACTIVATION OF SARS-COV-2 PARTICLES IN INTERNAL DUCT SYSTEM A NUMERICAL INVESTIGATION BASED ON COMPUTATIONAL FLUID DYNAMICS
THE EFFECT OF DIFFERENT UV-C LAMP CONFIGURATIONS ON THE INACTIVATION OF SARS-COV-2 PARTICLES IN INTERNAL DUCT SYSTEM A NUMERICAL INVESTIGATION BASED ON COMPUTATIONAL FLUID DYNAMICS Open
The global pandemic of the SARS-CoV-2 (COVID-19) virus has necessitated the reanalysis of the measures taken to avert the viral dispersion within indoor and outdoor environments. Ventilation systems play a key role in reducing the spread o…
View article: Multiscale Modelling and Infection Probability of Sars-Cov-2 Transmission in a Typical Lecture Theatre
Multiscale Modelling and Infection Probability of Sars-Cov-2 Transmission in a Typical Lecture Theatre Open
View article: Propulsive characteristics of single-pulsed jets with tube and orifice openings
Propulsive characteristics of single-pulsed jets with tube and orifice openings Open
The effects of the nozzle exit geometry on the unsteady propulsive characteristics of single-pulsed jets are studied numerically. For both tube and orifice nozzles, the jet exit configuration is parameterized by the diameter ratio RD, whic…
View article: INFLUENCE OF THE OCCUPANT’S HEIGHT ON COUGH DISPERSION AND INFECTION RISK WITHIN AN INDOOR ENVIRONMENT: A NUMERICAL STUDY
INFLUENCE OF THE OCCUPANT’S HEIGHT ON COUGH DISPERSION AND INFECTION RISK WITHIN AN INDOOR ENVIRONMENT: A NUMERICAL STUDY Open
The SARS-CoV-2 (COVID-19) pandemic has gradually subsided, but ongoing efforts to understand and prevent future pandemics remain crucial. Computational Fluid Dynamics (CFD) plays a key role in predicting flow dynamics and dispersion of vir…
View article: Upper internals arrangement for a pressurized water reactor
Upper internals arrangement for a pressurized water reactor Open
In a pressurized water reactor with all of the in-core instrumentation gaining access to the core through the reactor head, each fuel assembly in which the instrumentation is introduced is aligned with an upper internals instrumentation gu…
View article: Sustaining aviation workforce after the pandemic: Evidence from Hong Kong aviation students toward skills, specialised training, and career prospects through a mixed-method approach
Sustaining aviation workforce after the pandemic: Evidence from Hong Kong aviation students toward skills, specialised training, and career prospects through a mixed-method approach Open
View article: Enhancing the MEP Coordination Process with BIM Technology and Management Strategies
Enhancing the MEP Coordination Process with BIM Technology and Management Strategies Open
Building Information Modeling (BIM) has been increasingly used in coordinating the different mechanical, electrical, and plumbing (MEP) services in the construction industries. As the construction industries are slowly adapting to BIM, the…
View article: Classifying Situational Awareness Using Eeg and Eye-Tracking Features in Air Traffic Control Tasks with Different Workload
Classifying Situational Awareness Using Eeg and Eye-Tracking Features in Air Traffic Control Tasks with Different Workload Open
View article: The large magnetocaloric effect and refrigerant capacity in nanocrystalline/ amorphous Gd$_3$Ni/Gd$_{65}$Ni$_{35}$ composite microwires
The large magnetocaloric effect and refrigerant capacity in nanocrystalline/ amorphous Gd$_3$Ni/Gd$_{65}$Ni$_{35}$ composite microwires Open
We report on a novel class of nanocrystalline/amorphous Gd$_3$Ni/Gd$_{65}$Ni$_{35}$ composite microwires, which was created directly by melt-extraction through controlled solidification. X-ray diffraction (XRD) and transmission electron mi…
View article: A general definition of formation time for starting jets and forced plumes at low Richardson number
A general definition of formation time for starting jets and forced plumes at low Richardson number Open
View article: Bubble Performance Study before and after Detachment in a Membrane Bioreactor
Bubble Performance Study before and after Detachment in a Membrane Bioreactor Open
In the membrane filtration system of the Membrane Bioreactor, air bubbles are generated in the Membrane Bioreactor tank to scour the surface of the hollow fiber membranes by creating shear forces and vibrations to prevent fouling, known as…
View article: Numerical Simulation of Air-Water Slug Flow in the Aeration Diffuser Pipe of a Membrane Bioreactor
Numerical Simulation of Air-Water Slug Flow in the Aeration Diffuser Pipe of a Membrane Bioreactor Open
In the membrane filtration system of the membrane bioreactor, air is used to scour the membrane.Liquid slug is not desirable as it will cause non-uniform aeration flow through all orifices.Computational Fluid Dynamics (CFD) simulations to …
View article: Trajectory Estimation for Geo-Fencing Applications on Small-Size Fixed-Wing UAVs
Trajectory Estimation for Geo-Fencing Applications on Small-Size Fixed-Wing UAVs Open
The steadily increasing popularity of Unmanned Aerial Vehicles (UAVs) is creating new opportunities in diverse fields of technology and business. However, this increase of popularity also raises safety concerns. To tackle the primary conce…
View article: Flight maneuver automation for system analysis of small fixed-wing UAVs
Flight maneuver automation for system analysis of small fixed-wing UAVs Open
The application of Unmanned Aerial Vehicles (UAVs) has become increasingly versatile, creating
\nnew opportunities in the diverse fields of technology and business. However, this increase in variety
\nalso results in progressively challeng…
View article: Withdrawal: Study of Wing Camber for Optimal Flight Efficiency of a Long-Endurance Solar-Powered Unmanned Aircraft
Withdrawal: Study of Wing Camber for Optimal Flight Efficiency of a Long-Endurance Solar-Powered Unmanned Aircraft Open
View article: Practical Automated Video Analytics for Crowd Monitoring and Counting
Practical Automated Video Analytics for Crowd Monitoring and Counting Open
Video surveillance is gaining popularity in numerous applications, including facility management, traffic monitoring, crowd analysis, and urban security. Despite the increasing demand for closed-circuit television (CCTV) and related infras…
View article: A Novel Methodology to Improve Cooling Efficiency at Data Centers
A Novel Methodology to Improve Cooling Efficiency at Data Centers Open
Data centers are mission-critical infrastructures. There are strict service level requirements and standards imposed on operators and maintainers to ensure reliable run-the-clock operation. In the context of thermal management and data hal…
View article: Kinematic Model for Fixed-Wing Aircraft with Constrained Roll-Rate
Kinematic Model for Fixed-Wing Aircraft with Constrained Roll-Rate Open
The technical report derives a kinematic model of fixed-wing aircraft that is based on constrained roll rate. This new kinematic model can be used for trajectory planning and optimization.
View article: Theoretical and Computational Analysis on Double-End Submerged Hollow Fibre Membrane Modules
Theoretical and Computational Analysis on Double-End Submerged Hollow Fibre Membrane Modules Open
This paper studies the potential increase in permeate output flow rate that submerged hollow fibres can achieve when operating in double-end suction. The flow dynamics of submerged hollow fibre membranes with different combinations of fibr…
View article: Lock-on of vortex shedding to a pair of synthetic jets with phase difference
Lock-on of vortex shedding to a pair of synthetic jets with phase difference Open
This paper furthers our understanding of lock-on that is induced by periodic external forcing. The effect of forcing phase difference is investigated. An extended linear theory is proposed to predict the centers of various lock-on regimes,…
View article: Control of vortex-induced vibration using a pair of synthetic jets: Influence of active lock-on
Control of vortex-induced vibration using a pair of synthetic jets: Influence of active lock-on Open
While conventional vortex-induced vibration (VIV) of bluff bodies is suppressed through reducing the strength of asymmetric vortex shedding, it can also be mitigated by shifting the vortex shedding frequency away from the natural frequency…
View article: Active control of vortex-induced vibrations of a circular cylinder using windward-suction- leeward-blowing actuation
Active control of vortex-induced vibrations of a circular cylinder using windward-suction- leeward-blowing actuation Open
This paper studies the control of two-dimensional vortex-induced vibrations (VIVs) of a single circular cylinder at a Reynolds number of 100 using a novel windward-suction-leeward-blowing (WSLB) concept. A lattice Boltzmann method based nu…
View article: Control of wakes and vortex-induced vibrations of a single circular cylinder using synthetic jets
Control of wakes and vortex-induced vibrations of a single circular cylinder using synthetic jets Open