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Phase field simulation of binary alloy dendrite growth under thermal- and forced-flow fields: An implementation of the parallel-multigrid approach (2013)
Journal Article
Guo, Z., Mi, J., Xiong, S., & Grant, P. S. (2013). Phase field simulation of binary alloy dendrite growth under thermal- and forced-flow fields: An implementation of the parallel-multigrid approach. Metallurgical and Materials Transactions B, 44(4), 924-937. https://doi.org/10.1007/s11663-013-9861-5

Dendrite growth and morphology evolution during solidification have been studied using a phase field model incorporating melt convection effects, which was solved using a robust and efficient parallel, multigrid computing approach. Single dendrite gr... Read More about Phase field simulation of binary alloy dendrite growth under thermal- and forced-flow fields: An implementation of the parallel-multigrid approach.

Model based evaluation of six energy integration schemes applied to a small-scale gasification process for power generation (2013)
Journal Article
Font Palma, C., & Martin, A. D. (2013). Model based evaluation of six energy integration schemes applied to a small-scale gasification process for power generation. Biomass & bioenergy, 54, 201-210. https://doi.org/10.1016/j.biombioe.2013.03.024

This work considers the use of spent poultry litter as a fuel for on-site power generation. On-site use eliminates the need for the transportation of biomass to centralised plants and the associated bio-security issues. This work utilised process sim... Read More about Model based evaluation of six energy integration schemes applied to a small-scale gasification process for power generation.

Model for biomass gasification including tar formation and evolution (2013)
Journal Article
Palma, C. F. (2013). Model for biomass gasification including tar formation and evolution. Energy and Fuels, 27(5), 2693-2702. https://doi.org/10.1021/ef4004297

Since tar elimination from the product gas is necessary to make gasification an attractive option, the presence of tar was included in a kinetic model. Lignin was assumed as the main precursor of tars due to its aromatic nature; therefore, the lignin... Read More about Model for biomass gasification including tar formation and evolution.

In situ study of the evolution of atomic strain of bulk metallic glass and its effects on shear band formation (2013)
Journal Article
Huang, Y. J., Khong, J. C., Connolley, T., & Mi, J. (2013). In situ study of the evolution of atomic strain of bulk metallic glass and its effects on shear band formation. Scripta materialia, 69(3), 207-210. https://doi.org/10.1016/j.scriptamat.2013.03.016

The tensile behavior of TiZrNiCuBe metallic glass was studied using synchrotron X-ray diffraction and scanning electron microscopy. Shear band formation was carefully controlled by the introduction of a stress gradient due to a semi-circular notch. M... Read More about In situ study of the evolution of atomic strain of bulk metallic glass and its effects on shear band formation.

Plenum window insertion loss in the presence of a line source - A scale model study (2013)
Journal Article
Tong, Y. G., & Tang, S. K. (2013). Plenum window insertion loss in the presence of a line source - A scale model study. The Journal of the Acoustical Society of America, 133(3), 1458-1467. https://doi.org/10.1121/1.4788996

The acoustical insertion losses of plenum windows installed on a building facade in the presence of a non-parallel line source are studied by using a 1:4 scaled down model in a semi-anechoic chamber in the present investigation. Two types of insertio... Read More about Plenum window insertion loss in the presence of a line source - A scale model study.

Aeroacoustics of T-junction merging flow (2013)
Journal Article
Lam, G. C., Leung, R. C., & Tang, S. K. (2013). Aeroacoustics of T-junction merging flow. The Journal of the Acoustical Society of America, 133(2), 697-708. https://doi.org/10.1121/1.4773351

This paper reports a numerical study of the aeroacoustics of merging flow at T-junction. The primary focus is to elucidate the acoustic generation by the flow unsteadiness. The study is conducted by performing direct aeroacoustic simulation approach,... Read More about Aeroacoustics of T-junction merging flow.

Shear punching of a Ti-based bulk metallic glass (2012)
Journal Article
Huang, Y., Wang, D., Fan, H., Sun, J., Shen, J., & Mi, J. (2013). Shear punching of a Ti-based bulk metallic glass. Materials Science and Engineering: A, 561, 220-225. https://doi.org/10.1016/j.msea.2012.11.022

In the paper, the deformation of Ti40Zr25Ni3Cu12Be20 bulk metallic glass plate subjected to shear punching has been studied. The fractured surface of the punch-out disks consists of three characteristic zones, namely the deformation band, the fractur... Read More about Shear punching of a Ti-based bulk metallic glass.

Narrow sidebranch arrays for low frequency duct noise control (2012)
Journal Article
Tang, S. K. (2012). Narrow sidebranch arrays for low frequency duct noise control. The Journal of the Acoustical Society of America, 132(5), 3086-3097. https://doi.org/10.1121/1.4756951

The present study investigates the sound transmission loss across a section of an infinitely long duct where one or more narrow sidebranch tubes are installed flushed with the duct wall. The finite-element method is used to compute the wave propagati... Read More about Narrow sidebranch arrays for low frequency duct noise control.

A high-speed imaging and modeling study of dendrite fragmentation caused by ultrasonic cavitation (2012)
Journal Article
Shu, D., Sun, B., Mi, J., & Grant, P. S. (2012). A high-speed imaging and modeling study of dendrite fragmentation caused by ultrasonic cavitation. Metallurgical and materials transactions. A, Physical metallurgy and materials science, 43(10), 3755-3766. https://doi.org/10.1007/s11661-012-1188-3

The dynamic behavior of ultrasound-induced cavitation bubbles and their effect on the fragmentation of dendritic grains of a solidifying succinonitrile 1 wt pct camphor organic transparent alloy have been studied experimentally using high-speed digit... Read More about A high-speed imaging and modeling study of dendrite fragmentation caused by ultrasonic cavitation.

Experimental investigation of the sound absorption performance of compartmented Helmholtz resonators (2012)
Journal Article
Tang, S. K., Ng, C. H., & Lam, E. Y. (2012). Experimental investigation of the sound absorption performance of compartmented Helmholtz resonators. Applied acoustics. Acoustique appliqué. Angewandte Akustik, 73(9), 969-976. https://doi.org/10.1016/j.apacoust.2012.03.016

An experiment was derived in the present study to investigate the effects of coupling up two Helmholtz resonators on their overall sound absorption performance. The effect of compartmenting the cavity of a resonator on its sound absorption property w... Read More about Experimental investigation of the sound absorption performance of compartmented Helmholtz resonators.

Perception of urban park soundscape (2012)
Journal Article
Tse, M. S., Chau, C. K., Choy, Y. S., Tsui, W. K., Chan, C. N., & Tang, S. K. (2012). Perception of urban park soundscape. The Journal of the Acoustical Society of America, 131(4), 2762-2771. https://doi.org/10.1121/1.3693644

A number of studies have been initiated to explore how to improve the soundscape quality in urban parks. However, good soundscape quality in parks cannot be provided without a thorough understanding of the complex relationships among sound, environme... Read More about Perception of urban park soundscape.

On the study of the effects of sea views, greenery views and personal characteristics on noise annoyance perception at homes (2012)
Journal Article
Nang Li, H., Kwan Chau, C., Sze Tse, M., & Tang, S. K. (2012). On the study of the effects of sea views, greenery views and personal characteristics on noise annoyance perception at homes. The Journal of the Acoustical Society of America, 131(3), 2131-2140. https://doi.org/10.1121/1.3681936

Noise annoyance has caused significant adverse impacts on human beings and numerous efforts have been spent on mitigating annoyance problems. Natural greenery has been shown to be able to moderate annoyance problems at home but this conclusion was dr... Read More about On the study of the effects of sea views, greenery views and personal characteristics on noise annoyance perception at homes.

Modelling the electromagnetic separation of non-metallic particles from liquid metal flowing through a two-stage multichannel (2011)
Journal Article
Shu, D., Mi, J., Wang, J., & Sun, B. (2011). Modelling the electromagnetic separation of non-metallic particles from liquid metal flowing through a two-stage multichannel. Isij International, 51(1), 21-26. https://doi.org/10.2355/isijinternational.51.21

A two-stage multichannel was designed to increase the efficiency of separating non-metallic particles from liquid metal flowing through an alternating magnetic field. Numerical method was developed to calculate the particle concentration and separati... Read More about Modelling the electromagnetic separation of non-metallic particles from liquid metal flowing through a two-stage multichannel.

On the recovery of moving source characteristics using time-frequency approach (2011)
Journal Article
Tam, K. C., Tang, S. K., & Lau, S. K. (2012). On the recovery of moving source characteristics using time-frequency approach. Applied acoustics. Acoustique appliqué. Angewandte Akustik, 73(4), 366-378. https://doi.org/10.1016/j.apacoust.2011.10.012

Four time-frequency analysis techniques, namely the short-time Fourier transform, the wavelet transform, the polynomial phase estimation and the Chirplet transform, are used in the present study to recover the moving speed, the sound frequency and th... Read More about On the recovery of moving source characteristics using time-frequency approach.

An implicit parallel multigrid computing scheme to solve coupled thermal-solute phase-field equations for dendrite evolution (2011)
Journal Article
Guo, Z., Mi, J., & Grant, P. S. (2012). An implicit parallel multigrid computing scheme to solve coupled thermal-solute phase-field equations for dendrite evolution. Journal of Computational Physics, 231(4), 1781-1796. https://doi.org/10.1016/j.jcp.2011.11.006

An implicit, second-order space and time discretization scheme together with a parallel multigrid method involving a strip grid domain partitioning has been developed to solve fully coupled, nonlinear phase field equations involving solute and heat t... Read More about An implicit parallel multigrid computing scheme to solve coupled thermal-solute phase-field equations for dendrite evolution.

Gleeble experiments concerning dendrite re-melting and its role in microstructural evolution in spray formed high-alloy metals (2011)
Journal Article
Zhang, Y., Liu, N., Li, Z., Zhang, G., Yuan, H., Xu, W., …Mi, J. (2011). Gleeble experiments concerning dendrite re-melting and its role in microstructural evolution in spray formed high-alloy metals. Rare Metals, 30(SUPPL.1), 401-404. https://doi.org/10.1007/s12598-011-0312-7

An experimental approach was designed to understand dendrite fragmentation of atomized droplets deposition in spray materials, and to study the relationship between dendrite fragmentation behavior and subsequent microstructural evolution. A Gleeble 3... Read More about Gleeble experiments concerning dendrite re-melting and its role in microstructural evolution in spray formed high-alloy metals.

Ammonia removal in anaerobic digestion by biogas stripping: An evaluation of process alternatives using a first order rate model based on experimental findings (2011)
Journal Article
Walker, M., Iyer, K., Heaven, S., & Banks, C. (2011). Ammonia removal in anaerobic digestion by biogas stripping: An evaluation of process alternatives using a first order rate model based on experimental findings. Chemical Engineering Journal, 178, 138-145. https://doi.org/10.1016/j.cej.2011.10.027

The feasibility of biogas stripping to remove ammonia in the anaerobic digestion of source segregated food waste was investigated. It was found in batch experiments that ammonia could be removed from digestate and that the removal followed 1st order... Read More about Ammonia removal in anaerobic digestion by biogas stripping: An evaluation of process alternatives using a first order rate model based on experimental findings.

Characterisation, kinetics and modelling of gasification of poultry manure and litter: An overview (2011)
Journal Article
Font-Palma, C. (2012). Characterisation, kinetics and modelling of gasification of poultry manure and litter: An overview. Energy Conversion and Management, 53(1), 92-98. https://doi.org/10.1016/j.enconman.2011.08.017

Environmental implications of the disposal of waste from the poultry industry have created the need for proper waste management. As a result, poultry litter has been proposed as a potential fuel candidate for thermal conversion technologies since it... Read More about Characterisation, kinetics and modelling of gasification of poultry manure and litter: An overview.

On weak unsteady signal detection using statistical tests (2011)
Journal Article
Chan, C. M., Tang, S. K., Wong, H., & Lee, W. L. (2012). On weak unsteady signal detection using statistical tests. Applied acoustics. Acoustique appliqué. Angewandte Akustik, 73(2), 164-172. https://doi.org/10.1016/j.apacoust.2011.06.018

Two statistical tests, namely the Jarque-Bera and the D'Agostino tests, originally adopted for checking data normality are used to recover the initialization of an exponentially growing wave embedded inside a stationary background noise in the presen... Read More about On weak unsteady signal detection using statistical tests.