All Outputs (499)

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.

A directionally tunable but frequency-invariant beamformer on an acoustic velocity-sensor triad to enhance speech perception (2012)
Presentation / Conference Contribution
Wu, Y. I., Wong, K. T., Yuan, X., Lau, S. K., & Tang, S. K. A directionally tunable but frequency-invariant beamformer on an acoustic velocity-sensor triad to enhance speech perception

Herein investigated are computationally simple microphone-array beamformers that are independent of the frequency-spectra of all signals, all interference, and all noises. These beamformers allow the listener to tune the desired azimuth-elevation "lo... Read More about A directionally tunable but frequency-invariant beamformer on an acoustic velocity-sensor triad to enhance speech perception.

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.

Dynamic performance of a façade-based solar loop heat pipe water heating system (2012)
Journal Article
Wang, Z., Duan, Z., Zhao, X., & Chen, M. (2012). Dynamic performance of a façade-based solar loop heat pipe water heating system. Solar Energy, 86(5), 1632-1647. https://doi.org/10.1016/j.solener.2012.02.031

This paper reported a dedicated study of a novel façade-based solar loop heat pipe (LHP) water heating system using both theoretical and experimental methods. This system employs a modular panel incorporating a unique loop heat pipe that is able to s... Read More about Dynamic performance of a façade-based solar loop heat pipe water heating system.

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.

Refining the understanding of inhibitory processes: how response prepotency is created and overcome (2011)
Journal Article
Simpson, A., Riggs, K., Beck, S. R., Gorniak, S. L., Wu, Y., Abbott, D., & Diamond, A. (2012). Refining the understanding of inhibitory processes: how response prepotency is created and overcome. Developmental Science, 15(1), 62-73. https://doi.org/10.1111/j.1467-7687.2011.01105.x

Understanding (a) how responses become prepotent provides insights into when inhibition is needed in everyday life. Understanding (b) how response prepotency is overcome provides insights for helping children develop strategies for overcoming such te... Read More about Refining the understanding of inhibitory processes: how response prepotency is created and overcome.

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., Gao, Z., & 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.

Comparative study of the performance of the M-cycle counter-flow and cross-flow heat exchangers for indirect evaporative cooling - Paving the path toward sustainable cooling of buildings (2011)
Journal Article
Zhan, C., Duan, Z., Zhao, X., Smith, S., Jin, H., & Riffat, S. (2011). Comparative study of the performance of the M-cycle counter-flow and cross-flow heat exchangers for indirect evaporative cooling - Paving the path toward sustainable cooling of buildings. Energy, 36(12), 6790-6805. https://doi.org/10.1016/j.energy.2011.10.019

This paper provides a comparative study of the performance of cross-flow and counter-flow M-cycle heat exchangers for dew point cooling. It is recognised that evaporative cooling systems offer a low energy alternative to conventional air conditioning... Read More about Comparative study of the performance of the M-cycle counter-flow and cross-flow heat exchangers for indirect evaporative cooling - Paving the path toward sustainable cooling of buildings.

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.

Mass and energy balance for a rotating-drum composting plant (2011)
Journal Article
Eades, P., Banks, C., Heaven, S., & Walker, M. (2011). Mass and energy balance for a rotating-drum composting plant. Proceedings of the ICE - Waste and Resource Management, 164(3), 151-159. https://doi.org/10.1680/warm.2011.164.3.151

The Bioganix in-vessel composting system at Leominster, UK, received 33 515 t of waste from January 2006 to December 2007, of which 9200 t was source-segregated biodegradable municipal waste (BMW). The process operated with a nominal in-vessel retent... Read More about Mass and energy balance for a rotating-drum composting plant.

Full scale model investigation on the acoustical protection of a balcony-like faade device (L) (2011)
Journal Article
Tong, Y. G., Tang, S. K., & Yeung, M. K. (2011). Full scale model investigation on the acoustical protection of a balcony-like faade device (L). The Journal of the Acoustical Society of America, 130(2), 673-676. https://doi.org/10.1121/1.3598430

The acoustical insertion losses produced by a balcony-like structure in front of a window are examined experimentally. The results suggest that the balcony ceiling is the most appropriate location for the installation of artificial sound absorption f... Read More about Full scale model investigation on the acoustical protection of a balcony-like faade device (L).

Development of a heterogeneous microwave network fade simulation tool applicable to networks that span Europe (2011)
Journal Article
Paulson, K. S., & Basarudin, H. (2011). Development of a heterogeneous microwave network fade simulation tool applicable to networks that span Europe. Radio science, 46(4), Article RS4004. https://doi.org/10.1029/2010rs004608

Several research groups in Europe are developing joint channel simulators for arbitrarily complex networks of terrestrial and slant path, microwave telecommunications links. Currently, the Hull Rain Fade Network Simulator (HRFNS) developed at Univers... Read More about Development of a heterogeneous microwave network fade simulation tool applicable to networks that span Europe.

Sound fields inside street canyons with inclined flanking building façades (2011)
Presentation / Conference Contribution
Tang, S. K., & Piippo, K. E. Sound fields inside street canyons with inclined flanking building façades

Street canyons are common in modern cities. It is well known that the multiple sound reflections within the canyons tend to increase the noise levels inside the canyons. An scaled down model experiment was conducted in the present investigation to st... Read More about Sound fields inside street canyons with inclined flanking building façades.