R
Randy P. Hessel
Researcher at University of Wisconsin-Madison
Publications - 36
Citations - 1198
Randy P. Hessel is an academic researcher from University of Wisconsin-Madison. The author has contributed to research in topics: Combustion & Homogeneous charge compression ignition. The author has an hindex of 18, co-authored 35 publications receiving 1123 citations. Previous affiliations of Randy P. Hessel include Glenn Research Center.
Papers
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Journal ArticleDOI
A fully coupled computational fluid dynamics and multi-zone model with detailed chemical kinetics for the simulation of premixed charge compression ignition engines
Aristotelis Babajimopoulos,Dennis N. Assanis,Daniel L. Flowers,Salvador M. Aceves,Randy P. Hessel +4 more
TL;DR: In this article, a balanced approach that captures both fluid motion as well as low- and high-temperature fuel oxidation is proposed for modeling the premixed charge compression ignition (PCCI) engine.
Proceedings ArticleDOI
A Decoupled Model of Detailed Fluid Mechanics Followed by Detailed Chemical Kinetics for Prediction of Iso-Octane HCCI Combustion
Salvador M. Aceves,Joel Martinez-Frias,Daniel L. Flowers,J. Ray Smith,Robert W. Dibble,John F. Wright,Randy P. Hessel +6 more
Proceedings ArticleDOI
A Sequential Fluid-mechanic Chemical-kinetic Model of Propane HCCI Combustion
Salvador M. Aceves,Daniel L. Flowers,Joel Martinez-Frias,J. Ray Smith,Charles K. Westbrook,William J. Pitz,Robert W. Dibble,John F. Wright,Wole C. Akinyemi,Randy P. Hessel +9 more
TL;DR: In this article, a methodology for predicting combustion and emissions in a Homogeneous Charge Compression Ignition (HCCI) Engine is presented. But the authors do not consider the effect of the heat transfer correlation on the results of the analysis.
Proceedings ArticleDOI
Spatial Analysis of Emissions Sources for HCCI Combustion at Low Loads Using a Multi-Zone Model
Salvador M. Aceves,Daniel L. Flowers,Francisco Espinosa-Loza,Joel Martinez-Frias,John E. Dec,Magnus Sjöberg,Robert W. Dibble,Randy P. Hessel +7 more
TL;DR: In this article, a detailed numerical analysis of HCCI engine operation at low loads to investigate the sources of HC and CO emissions and the associated combustion inefficiencies was conducted.
Proceedings ArticleDOI
Piston-Liner Crevice Geometry Effect on HCCI Combustion by Multi-Zone Analysis
Salvador M. Aceves,Daniel L. Flowers,Francisco Espinosa-Loza,Joel Martinez-Frias,Robert W. Dibble,Magnus Christensen,Bengt Johansson,Randy P. Hessel +7 more
TL;DR: In this article, a multi-zone model has been developed that accurately predicts HCCI combustion and emissions, based on the observation that chemical kinetics dominates the process, with hotter zones reacting first, and then colder zones reacting in rapid succession.