English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

A detailed mechanism for the four-component RD387 gasoline surrogatedeveloped by Lawrence Livermore National Laboratory has shown good agreementwith experiments in engine-relevant conditions. However, with 1388 species and5933 reversible reactions, this detailed mechanism is far too large to use inpractical engine simulations. Therefore, reduction of the detailed mechanismwas performed using a multi-stage approach consisting of the DRGEPSA method,unimportant reaction elimination, isomer lumping, and analytic QSS reductionbased on CSP analysis. A new greedy sensitivity analysis algorithm wasdeveloped and demonstrated to be capable of removing more species for the sameerror limit compared to the conventional sensitivity analysis used in DRG-basedskeletal reduction methods. Using this new greedy algorithm, several skeletaland reduced mechanisms were developed at varying levels of complexity and fordifferent target condition ranges. The final skeletal and reduced mechanismsconsisted of 213 and 148 species, respectively, for a lean-to-stoichiometric,low-temperature HCCI-like range of conditions. For a lean-to-rich,high-temperature, SI/CI-like range of conditions, skeletal and reducedmechanisms were developed with 97 and 79 species, respectively. The skeletaland reduced mechanisms in this study were produced using an error limit of 10%and validated using homogeneous autoignition simulations over engine-relevantconditions - all showed good agreement in predicting ignition delay.Furthermore, extended validation was performed, including comparison ofautoignition temperature profiles, PSR temperature response curves andextinction turning points, and laminar flame speed calculations. All theextended validation showed results within the 10% error limit, demonstratingthe adequacy of the resulting reduced chemistry.

Reduced chemistry for a gasoline surrogate valid at engine-relevant conditions