Index Catalog // ScholarsArchive@OSU

Creator:: Brady, Kyle B., Hui, Xin, Sung, Chih-Jen, and Niemeyer, Kyle E.
Abstract:: Critical to the development of predictive combustion models is a robust understanding of the coupled effects of chemical kinetics and convective-diffusive transport at both atmospheric and elevated pressures. The present study describes a new variable-pressure non-premixed counterflow ignition experiment designed to address the need for well-characterized reference data to validate...
Full Text:: Skeletal - 1 atm Skeletal - 5 atm Skeletal - 10 atm Ig n iti o n D e la y ( m s ) 1000/T (1/K

Creator:: Brady, Kyle B., Hui, Xin, Sung, Chih-Jen, and Niemeyer, Kyle E.
Abstract:: Critical to the development of predictive combustion models is a robust understanding of the coupled effects of chemical kinetics and convective-diffusive transport at both atmospheric and elevated pressures. The present study describes a new variable-pressure non-premixed counterflow ignition experiment designed to address the need for well-characterized reference data to validate...
Full Text:: W/m-K, and typical gas conductivities in the range kg = 0.06–0.08 W/m-K, Biot number is of the

Creator:: Brady, Kyle B., Hui, Xin, Sung, Chih-Jen, and Niemeyer, Kyle E.
Abstract:: Critical to the development of predictive combustion models is a robust understanding of the coupled effects of chemical kinetics and convective-diffusive transport at both atmospheric and elevated pressures. The present study describes a new variable-pressure non-premixed counterflow ignition experiment designed to address the need for well-characterized reference data to validate...
Full Text:: elevated pressures Kyle Brady †a , Xin Hui a,b , Chih-Jen Sung a , Kyle Niemeyer c a

Creator:: Brady, Kyle B., Hui, Xin, Sung, Chih-Jen, and Niemeyer, Kyle E.
Abstract:: Critical to the development of predictive combustion models is a robust understanding of the coupled effects of chemical kinetics and convective-diffusive transport at both atmospheric and elevated pressures. The present study describes a new variable-pressure non-premixed counterflow ignition experiment designed to address the need for well-characterized reference data to validate...
Full Text:: in pressure the uncertainty in reference density for all terms is estimated as ±0.08 kg/m 3

Creator:: Niemeyer, Kyle E. and Sung, Chih-Jen
Abstract:: Strategies and recommendations for performing skeletal reductions of multicomponent surrogate fuels are presented, through the generation and validation of skeletal mechanisms for a three-component toluene reference fuel. Using the directed relation graph with error propagation and sensitivity analysis method followed by a further unimportant reaction elimination stage, skeletal mechanisms valid...
Full Text:: study using toluene reference fuels Kyle E. Niemeyer and Chih-Jen Sung Supplementary material The

Creator:: Niemeyer, Kyle E. and Sung, Chih-Jen
Abstract:: Strategies and recommendations for performing skeletal reductions of multicomponent surrogate fuels are presented, through the generation and validation of skeletal mechanisms for a three-component toluene reference fuel. Using the directed relation graph with error propagation and sensitivity analysis method followed by a further unimportant reaction elimination stage, skeletal mechanisms valid...
Full Text:: multicomponent surrogates: a case study using toluene reference fuels Kyle E. Niemeyera,∗, Chih-Jen Sungb

Creator:: Niemeyer, Kyle E. and Sung, Chih-Jen
Abstract:: The progress made in accelerating simulations of fluid flow using GPUs, and the challenges that remain, are surveyed. The review first provides an introduction to GPU computing and programming, and discusses various considerations for improved performance. Case studies comparing the performance of CPU- and GPUbased solvers for the Laplace and...
Resource Type:: Article
Full Text:: fluid dynamics Kyle E. Niemeyer · Chih-Jen Sung Received: date / Accepted: date Abstract The progress

Creator:: Niemeyer, Kyle E. and Sung, Chih-Jen
Abstract:: A detailed mechanism for the four-component RD387 gasoline surrogate developed by Lawrence Livermore National Laboratory has shown good agreement with experiments in engine-relevant conditions. However, with 1388 species and 5933 reversible reactions, this detailed mechanism is far too large to use in practical engine simulations. Therefore, reduction of the detailed...
Resource Type:: Article
Full Text:: Reduced chemistry for a gasoline surrogate valid at engine-relevant conditions Kyle E. Niemeyer∗,† and

Creator:: Niemeyer, Kyle E. and Sung, Chih-Jen
Abstract:: The chemical kinetics ODEs arising from operator-split reactive-flow simulations were solved on GPUs using explicit integration algorithms. Nonstiff chemical kinetics of a hydrogen oxidation mechanism (9 species and 38 irreversible reactions) were computed using the explicit fifth-order Runge–Kutta–Cash–Karp method, and the GPU-accelerated version performed faster than single- and six-core CPU...
Resource Type:: Article
Full Text:: simulations using GPUs Kyle E. Niemeyera,b,1,∗, Chih-Jen Sungb aDepartment of Mechanical and Aerospace

Creator:: Curtis, Nicholas J., Niemeyer, Kyle E., and Sung, Chih-Jen
Abstract:: Accurately predicting key combustion phenomena in reactive-flow simulations, e.g., lean blow-out, extinction/ignition limits and pollutant formation, necessitates the use of detailed chemical kinetics. The large size and high levels of numerical stiffness typically present in chemical kinetic models relevant to transportation/power-generation applications make the efficient evaluation/factorization of the chemical kinetic...
Resource Type:: Article
Full Text:: chemical kinetic Jacobian matrices and thermochemical source terms Nicholas J. Curtisa,∗, Kyle E

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