Quantitative metrics for comparison of in-cylinder velocity fields using particle image velocimetry

C Willman, B Scott, R Stone, D Richardson - Experiments in Fluids, 2020 - Springer
The in-cylinder flow field plays a key role in determining the combustion performance of
internal combustion engines (ICEs) and it is critically important to validate numerical …

A coupled phase-invariant POD and DMD analysis for the characterization of in-cylinder cycle-to-cycle flow variations under different swirl conditions

M Liu, F Zhao, DLS Hung - Flow, Turbulence and Combustion, 2023 - Springer
The cycle-to-cycle variations (CCV) of in-cylinder flow make critical impact on internal
combustion engine performance. The flow structure evolution and its cyclic variations need …

Temporal evolution analysis of in-cylinder flow by means of proper orthogonal decomposition

L Shen, KY Teh, P Ge, F Zhao… - International Journal of …, 2021 - journals.sagepub.com
In-cylinder flow fields and their temporal evolution have strong effect on the combustion
dynamics of internal combustion engines. Proper orthogonal decomposition is a statistical …

Analysis of in-cylinder flow and cycle-to-cycle flow variations in a small spark-ignition engine at different throttle openings

A Alam, M Mittal, V Lakshminarasimhan - 2020 - sae.org
Flow variations from one cycle to the next significantly influence the mixture formation and
combustion processes in engines. Therefore, it is important to understand the fluid motion …

Analysis of in-cylinder flow fields using proper orthogonal decomposition-based quadruple decomposition

S Nayek, R Velugula, M Mittal - Journal of Flow Visualization …, 2023 - dl.begellhouse.com
In order to meet increasingly stringent emission norms coupled with a heightened
requirement of performance, there has been an unabated effort toward improvement in the …

Multi-plane PIV using depth of field for in-cylinder flow measurements

C Willman, Q He, BAO Williams, R Stone… - SAE Technical …, 2023 - ora.ox.ac.uk
Extending the planar Particle Image Velocimetry (PIV) technique to enable measurements
on multiple planes simultaneously allows for some of the 3 dimensional nature of unsteady …

Experimental Investigation of Cyclic Variation of the In-Cylinder Flow in a Spark-Ignition Engine with a Charge Motion Control Valve

F Tian, L Shi, Z Che, Z Lu, K Sun, T Wang - Flow, Turbulence and …, 2023 - Springer
The cycle-to-cycle variations (CCV) have a substantial impact on the improvement of thermal
efficiency and the expansion of operational limitations in internal combustion engines. For …

Proper Orthogonal Decomposition Analysis of In-Cylinder Flow in a Small Spark-Ignition Engine at Different Throttle Openings with PIV Data

A Alam, M Mittal - Journal of Flow Visualization and Image …, 2023 - dl.begellhouse.com
In-cylinder fluid flow has been studied intensively due to its well-known impacts on
combustion and pollutant formation. The variation of the in-cylinder flow is a major …

Detecting Outliers in Crank Angle Resolved Engine Flow Field Datasets for Proper Orthogonal Decomposition Analysis

L Shen, KY Teh, P Ge, Y Wang, DLS Hung - 2017 - sae.org
Proper Orthogonal Decomposition (POD) is a useful statistical tool for analyzing the cycle-to-
cycle variation of internal combustion engine in-cylinder flow field. Given a set of flow fields …

Effects of outlier flow field on the characteristics of in-cylinder coherent structures identified by proper orthogonal decomposition-based conditional averaging and …

R Gao, L Shen, KY Teh, P Ge… - … of Engineering for …, 2019 - asmedigitalcollection.asme.org
Proper orthogonal decomposition (POD) offers an approach to quantify cycle-to-cycle
variation (CCV) of the flow field inside the internal combustion engine cylinder. POD …