Characterization of the effect of intake air swirl motion on time-resolved in-cylinder flow field using quadruple proper orthogonal decomposition

H Zhuang, DLS Hung - Energy Conversion and Management, 2016 - Elsevier
The control of intake air swirl motion is often used in spark-ignition direct-injection (SIDI)
engine to improve its in-cylinder fuel–air mixing process especially under engine idle and …

Cycle-to-cycle analysis of swirl flow fields inside a spark-ignition direct-injection engine cylinder using high-speed time-resolved particle image velocimetry

Y Wang, DLS Hung, H Zhuang, M Xu - 2016 - sae.org
The cycle-to-cycle variations of in-cylinder flow field represent a significant challenge which
influence the stability, fuel economy, and emissions of engine performance. In this …

Investigation of swirl ratio impact on in-cylinder flow in an SIDI optical engine

H Zhuang, DLS Hung, J Yang… - … of Engineering for …, 2016 - asmedigitalcollection.asme.org
Advanced powertrain technologies have improved engine performance with higher power
output, lower exhaust emission, and better controllability. Chief among them is the …

Analysis of crank angle-resolved vortex characteristics under high swirl condition in a spark-ignition direct-injection engine

F Zhao, P Ge, H Zhuang… - … of Engineering for …, 2018 - asmedigitalcollection.asme.org
In-cylinder air flow structure makes significant impacts on fuel spray dispersion, fuel mixture
formation, and flame propagation in spark ignition direct injection (SIDI) engines. While flow …

Mathematical modeling and validation of mass transfer phenomenon in homogeneous charge compression ignition engines based on a thermodynamic multi zone …

E Neshat, R Khoshbakhti Saray - Mathematical and Computer …, 2019 - Taylor & Francis
The main purpose of the current study is mathematical modelling and validation of mass
transfer phenomenon in homogeneous charge compression ignition engines. A validated …

Cycle-to-Cycle Variation of In-Cylinder Tumble Flow by Moment Normalization

KY Teh, P Ge, Y Wang, D Hung - 2017 - sae.org
The large-scale rotating flow structure in an engine cylinder exhibits features that can be
described in generic terms of tumble and swirl. The structural details, nevertheless, vary from …

Distortion mapping correction of in-cylinder flow field measurements through optical liner using gaussian optics model

P Ge, F Zhao, D Hung, H Pan, M Xu - 2017 - sae.org
Combustion efficiency of internal combustion engine is closely influenced by the air flow
pattern in the engine cylinder. Some researchers use high-speed particle image velocimetry …

[HTML][HTML] Dynamic mode decomposition of rotorcraft blade tip vortex in hovering state

W Kong, H Du, Q Zhang, Q Li, X Lv, L Zhou, W Zhang - AIP Advances, 2020 - pubs.aip.org
The flow field structure of a rotorcraft is complex; specifically, the rotor tip vortex structure has
a great influence on the rotor performance. Therefore, in this paper, the evolution …

Classifying IC Engine Swirl Fields by Complex Moments

KY Teh, P Ge, F Zhao… - Internal …, 2019 - asmedigitalcollection.asme.org
Engine in-cylinder flow varies from cycle to cycle, which contributes to variation of the mixing
and combustion processes between fuel and air. Such flow field cyclic variability at the …