Chenzhen Ji
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View article: Hectometric urban climate modelling over a tropical city
Hectometric urban climate modelling over a tropical city Open
Hectometric (100 m) numerical weather prediction (NWP) models have the potential to improve our understanding of urban‐scale processes. Such high‐resolution models may provide valuable information for sectors such as energy, transportation…
View article: Advancing anode-less lithium metal batteries: ZnF<sub>2</sub> modification and <i>in situ</i> structural regulation for enhanced performance
Advancing anode-less lithium metal batteries: ZnF<sub>2</sub> modification and <i>in situ</i> structural regulation for enhanced performance Open
A novel LiF@LiZn10/Li composite foil was developed as an effective anode for lithium metal batteries. The uniform lithiophilic substrate and the LiF-rich SEI optimize Li + deposition.
View article: Investigation on the stability of the Rijke-type thermoacoustic system with an axially distributed heat source
Investigation on the stability of the Rijke-type thermoacoustic system with an axially distributed heat source Open
Due to the incurred damages to the combustors, large-amplitude self-sustained thermoacoustic oscillations are unwanted in many propulsion systems, such as liquid/solid rocket motors and aero-engines. To suppress these thermoacoustic oscill…
View article: Damage performance of a shaped charge liner fabricated from Ti-29Nb-13Ta-4.6Zr alloy
Damage performance of a shaped charge liner fabricated from Ti-29Nb-13Ta-4.6Zr alloy Open
The change of the liner material directly affects the penetration and damage performance of the shaped charge. In this paper, Ti-29Nb-13Ta-4.6Zr (TNTZ) was used as the charge liner. Autodyn software was used to analyze the jet formation of…
View article: Weather Prediction for Singapore—Progress, Challenges, and Opportunities
Weather Prediction for Singapore—Progress, Challenges, and Opportunities Open
Singapore is a tiny city-state located in maritime Southeast Asia. Weather systems such as localized thunderstorms, squalls, and monsoon surges bring extreme rainfall to Singapore, influencing the day-to-day conduct of stakeholders in many…
View article: ANALYSIS OF COMBUSTION INSTABILITY MODES FOR A PARTIALLY PREMIXED SWIRL COMBUSTOR BY FLAME TRANSFER FUNCTION WITH THE THREE-DIMENSIONAL THERMOACOUSTIC MODEL
ANALYSIS OF COMBUSTION INSTABILITY MODES FOR A PARTIALLY PREMIXED SWIRL COMBUSTOR BY FLAME TRANSFER FUNCTION WITH THE THREE-DIMENSIONAL THERMOACOUSTIC MODEL Open
The modes of combustion instability of a partially premixed swirl flame were investigated in the current work. The experimental tests of combustion instability were conducted on a laboratory-scale 25 kW combustor. To identify the character…
View article: On the applicability of urban canopy parametrization in building grey zone
On the applicability of urban canopy parametrization in building grey zone Open
With increasing interest in urban meteorology and related services, the need to appropriately represent the urban environment in climate/weather models is rising. These regional weather/climate models typically use a km‐scale horizontal gr…
View article: Flow and aeroacoustic attributes of highly-heated transitional rectangular supersonic jets
Flow and aeroacoustic attributes of highly-heated transitional rectangular supersonic jets Open
Heated transitional supersonic jets exhausting from a rectangular nozzle at over-expanded conditions are investigated by Large Eddy Simulations and Ffowcs-Williams and Hawkings acoustic analogy. Four cases with a fixed nozzle pressure rati…
View article: Thermal Energy Storage for Solar Energy Utilization: Fundamentals and Applications
Thermal Energy Storage for Solar Energy Utilization: Fundamentals and Applications Open
Solar energy increases its popularity in many fields, from buildings, food productions to power plants and other industries, due to the clean and renewable properties. To eliminate its intermittence feature, thermal energy storage is vital…
View article: Geometric shapes effect of in-duct perforated orifices on aeroacoustics damping performances at low Helmholtz and Strouhal number
Geometric shapes effect of in-duct perforated orifices on aeroacoustics damping performances at low Helmholtz and Strouhal number Open
In this work, experimental studies are conducted to measure the aeroacoustics damping performances of 11 in-duct perforated plates in a cold-flow pipe with a variable Mach number. These in-duct plates have the same porosities but different…
View article: OFDM MIMO radar waveform design for targets identification
OFDM MIMO radar waveform design for targets identification Open
In order to obtain better target identification performance, an efficient waveform design method with high range resolution and low sidelobe level for orthogonal frequency division multiplexing (OFDM) multiple‐input multiple‐output (MIMO) …
View article: Effect of Fin Location on the Latent Heat Storage: A Numerical Study
Effect of Fin Location on the Latent Heat Storage: A Numerical Study Open
Latent heat thermal energy storage (LHTES) utilizing phase change materials (PCMs) is an appealing approach for the industrial waste heat recovery. However, due to the PCMs’ low thermal conductivity, the heat transfer enhancement methods l…
View article: Numerical Study of Dynamic Response of Different Fuels Jet Diffusion Flame to Standing Waves in a Longitudinal Tube
Numerical Study of Dynamic Response of Different Fuels Jet Diffusion Flame to Standing Waves in a Longitudinal Tube Open
In this work, the dynamic response of jet diffusion flame of burning hydrogen and propane respectively in a longitudinal tube to acoustic standing waves produced from a loudspeaker are studied. For this, 2-D numerical simulations are condu…