A numerical investigation of deflagration propagation and transition to detonation in a microchannel with detailed chemistry: Effects of thermal boundary conditions …

S Ramachandran, N Srinivasan, Z Wang, A Behkish… - Physics of …, 2023 - pubs.aip.org
We numerically investigate the premixed flame acceleration (FA) and the subsequent
deflagration to detonation transition (DDT) of pure and vitiated fuel/oxidizer mixtures in a …

Artificial neural network aided vapor–liquid equilibrium model for multi-component high-pressure transcritical flows with phase change

N Srinivasan, S Yang - Physics of Fluids, 2024 - pubs.aip.org
In this work, an artificial neural network (ANN) aided vapor–liquid equilibrium (VLE) model is
developed and coupled with a fully compressible computational fluid dynamics (CFD) solver …

Numerical investigation on flame dynamic and regime transitions during shock-cool flame interaction

E Fan, W Wang, T Zhang - Combustion and Flame, 2025 - Elsevier
Spherical cool, warm, and hot flames and their transitions during shock-flame interactions
(SFI) are numerically studied using dimethyl ether (DME)/air mixtures. The flame dynamic …

Flame acceleration and deflagration to detonation transition in a microchannel with catalytic nickel walls

S Ramachandran, SR Narayanan, Z Wang… - Physics of …, 2024 - pubs.aip.org
The characteristic behavior of the wall exerts a strong influence on the flame acceleration
(FA) and deflagration-to-detonation transition (DDT) processes in microchannels …

Microscopic hypersonic jetting in oblique detonation waves

R Suryanarayan, S Yang - AIAA SCITECH 2024 Forum, 2024 - arc.aiaa.org
We present a highly-resolved state-of-the-art 2-D Direct Numerical Simulation (DNS) of a
wedge-induced Oblique Detonation Wave (ODW) using a 9-species 21-reaction chemical …

Direct numerical simulation of supercritical carbon dioxide oxy-methane combustion

R Mishra, D Jarrahbashi - Physics of Fluids, 2024 - pubs.aip.org
Supercritical CO 2 (sCO 2) oxy-methane combustion is a key component of zero-carbon
technologies in direct-fired sCO 2 power cycles, ie, the Allam cycle which offers promising …

Characterization of the chemical kinetics of dimethyl ether (DME) in a controlled trajectory-rapid compression and expansion machine (CT-RCEM)

KC Bavandla, D Zhou, A Tripathi, Z Sun, S Yang - Combustion and Flame, 2023 - Elsevier
A numerical study of the chemical kinetics of dimethyl ether (DME)-air mixture is presented
when compressed in a controlled trajectory-rapid compression and expansion machine (CT …

VLE-Based High Pressure Stationary Droplet Evaporation at Spray Detonation Conditions

N Srinivasan, R Suryanarayan, H Zhang… - AIAA SCITECH 2024 …, 2024 - arc.aiaa.org
This paper numerically investigates the evaporation characteristics of a single n-dodecane
fuel droplet in high-pressure nitrogen environment relevant to rotating detonation engines. A …

Evaluation of Shock Wave-Boundary Layer Interaction Modeling Capabilities for Use in a Hypersonic Aerothermoelastic Framework

E Kimmel, D Huang, V Sharma, J Singh… - AIAA SCITECH 2024 …, 2024 - arc.aiaa.org
This study examines the ability of a computational fluid dynamics solver that employs
adaptive mesh refinement and embedded boundaries to model turbulent shock wave …

Computational Analysis of Supercritical CO2 Oxy-Methane Combustion

R Mishra - 2023 - search.proquest.com
The major challenge in designing oxy-fuel combustors in supercritical power generation
cycles is the lack of fundamental understanding of the combustion process at high pressures …