198 citations · 592 across the 15 of their papers we have counts for
16 papers
Rising and settling 2D cylinders with centre-of-mass offset
Martin P. A. Assen, Jelle B. Will, Chong Shen Ng +3
Rotational effects are commonly neglected when considering the dynamics of freely rising or settling isotropic particles. Here, we demonstrate that particle rotations play an impor…
Towards realistic simulations of human cough: effect of droplet emission duration and spread angle
Mogeng Li, Kai Leong Chong, Chong Shen Ng +6
Human respiratory events, such as coughing and sneezing, play an important role in the host-to-host airborne transmission of diseases. Thus, there has been a substantial effort in…
Bubble-particle collisions in turbulence: insights from point-particle simulations
Timothy T. K. Chan, Chong Shen Ng, Dominik Krug
Bubble-particle collisions in turbulence are central to a variety of processes such as froth flotation. Despite their importance, details of the collision process have not received…
Strong alignment of prolate ellipsoids in Taylor-Couette flow
Martin P. A. Assen, Chong Shen Ng, Jelle B. Will +3
We report on the mobility and orientation of finite-size, neutrally buoyant prolate ellipsoids (of aspect ratio ) in Taylor-Couette flow, using interface resolved numerical si…
An efficient phase-field method for turbulent multiphase flows
Hao-Ran Liu, Chong Shen Ng, Kai Leong Chong +2
With the aim of efficiently simulating three-dimensional multiphase turbulent flows with a phase-field method, we propose a new discretization scheme for the biharmonic term (the 4…
Enhancing Heat Transport in Multiphase Rayleigh-Bénard Turbulence by Changing the Plate-Liquid Contact Angles
Hao-Ran Liu, Kai Leong Chong, Chong Shen Ng +2
This numerical study presents a simple but extremely effective way to considerably enhance heat transport in turbulent multiphase flows, namely by using oleophilic walls. As a mode…
Boundary layers in turbulent vertical convection at high Prandtl number
Christopher J. Howland, Chong Shen Ng, Roberto Verzicco +1
Many environmental flows arise due to natural convection at a vertical surface, from flows in buildings to dissolving ice faces at marine-terminating glaciers. We use three-dimensi…
Optimal ventilation rate for effective displacement ventilation
Rui Yang, Chong Shen Ng, Kai Leong Chong +2
Indoor ventilation is essential for a healthy and comfortable living environment. A key issue is to discharge anthropogenic air contamination such as CO2 gas or, more seriously, ai…
Growth of respiratory droplets in cold and humid air
Chong Shen Ng, Kai Leong Chong, Rui Yang +3
The ambient conditions surrounding liquid droplets determine their growth or shrinkage. However, the precise fate of a liquid droplet expelled from a respiratory puff as dictated b…
Extended lifetime of respiratory droplets in a turbulent vapour puff and its implications on airborne disease transmission
Kai Leong Chong, Chong Shen Ng, Naoki Hori +3
To quantify the fate of respiratory droplets under different ambient relative humidities, direct numerical simulations of a typical respiratory event are performed. We found that,…
Two-layer Thermally Driven Turbulence: Mechanisms for Interface Breakup
Hao-Ran Liu, Kai Leong Chong, Qi Wang +3
It is commonly accepted that the breakup criteria of drops or bubbles in turbulence is governed by surface tension and inertia. However, also {\it{buoyancy}} can play an important…
Convection-dominated dissolution for single and multiple immersed sessile droplets
Kai Leong Chong, Yanshen Li, Chong Shen Ng +2
We numerically investigate both single and multiple droplet dissolution with droplets consisting of lighter liquid dissolving in a denser host liquid. The significance of buoyancy…
Non-universal transport mechanisms in vertical natural convection with dispersed light droplets
Chong Shen Ng, Vamsi Spandan, Roberto Verzicco +1
We present results on the effect of dispersed droplets in vertical natural convection (VC) using direct numerical simulations based on a two-way fully coupled Euler-Lagrange approa…
Bulk scaling in wall-bounded and homogeneous vertical natural convection
Chong Shen Ng, Andrew Ooi, Detlef Lohse +1
Previous numerical studies on homogeneous Rayleigh-Bénard convection, which is Rayleigh-Bénard convection (RBC) without walls, and therefore without boundary layers, have revealed…
Changes in the boundary-layer structure at the edge of the ultimate regime in vertical natural convection
Chong Shen Ng, Andrew Ooi, Detlef Lohse +1
In thermal convection for very large Rayleigh numbers (), the thermal and viscous boundary layers (BL) undergo a transition from a classical state to an ultimate state. In the…
Vertical natural convection: application of the unifying theory of thermal convection
Chong Shen Ng, Andrew Ooi, Detlef Lohse +1
Results from direct numerical simulations of vertical natural convection at Rayleigh numbers - and Prandtl number support a generalised appl…