Transport Research International Documentation (TRID) https://trid.trb.org/ en-us Copyright © 2024. National Academy of Sciences. All rights reserved. http://blogs.law.harvard.edu/tech/rss tris-trb@nas.edu (Bill McLeod) tris-trb@nas.edu (Bill McLeod) Transport Research International Documentation (TRID) https://trid.trb.org/Images/PageHeader-wTitle.jpg https://trid.trb.org/ A study of flame dynamics and structure in premixed turbulent planar NH₃/H₂/air flames https://trid.trb.org/View/2326025 Tue, 19 Mar 2024 15:19:10 GMT https://trid.trb.org/View/2326025 A new concept for high efficiency and clean diesel combustion by controlling mixture distribution with dual zone combustion chamber https://trid.trb.org/View/2287594 Fri, 22 Dec 2023 11:19:11 GMT https://trid.trb.org/View/2287594 A priori test of perfectly stirred reactor approach to evaluating mean fuel consumption and heat release rates in highly turbulent premixed flames https://trid.trb.org/View/2247658 δₗ, respectively). This result is further supported by directly filtering fuel consumption rate in a laminar premixed flame. The values of the thickness δₗ, calculated using detail chemical mechanisms for different fuels under elevated temperatures and pressures associated with combustion in piston engines, indicate that it is difficult to satisfy the constraint of Δ<0.5δₗ in contemporary unsteady multidimensional numerical simulations of turbulent burning in such engines.]]> Wed, 18 Oct 2023 17:00:19 GMT https://trid.trb.org/View/2247658 An improved TRF mechanism for a new turbulent premixed combustion model with application to engine combustion CFD https://trid.trb.org/View/2226142 750 K) have been identified. Based on a recently published power-law laminar flame speed correlation which is able to provide good predictions under a wide range of engine conditions, correct reaction rate constants for the eight high-temperature dominant reactions have been determined for physical laminar flame speeds. The identification and improvement of the eight high-temperature dominant reactions are the first novelty of this work. In order to simulate ethanol and gasoline blends, a latest ethanol sub-mechanism has been implemented into the TRF mechanism. The improved TRF mechanism was validated using available experimental data in the literature. Based on the improved TRF mechanism, a new mechanism library has been generated, which can be used for an improved mechanism-dynamic-selection turbulent premixed combustion model in which turbulent diffusivity is constructed as a function of local turbulence/thermodynamics conditions. The dynamic turbulent diffusivity sub-model is the second novelty of this work. The improved TRF mechanism and its combination with the improved mechanism-dynamic-selection turbulent premixed combustion model were successfully applied to the prediction of combustion and emissions of GTDI (gasoline turbocharged direct injection) engines under both warm-up and transient cold start operating conditions, indicating that the improved models in this work are beneficial for predictive engine combustion CFD (computational fluid dynamics).]]> Fri, 22 Sep 2023 09:08:17 GMT https://trid.trb.org/View/2226142 Optical characterization of stratified-premixed natural gas direct-injection combustion regimes https://trid.trb.org/View/2157307 45 m/s) and (ii) more distributed early reaction zones when overlapping pilot and NG injections cause partial pilot quenching. These results connect and extend the findings of previous investigations and guide the future strategic implementation of NG stratification for improved combustion and emissions performance.]]> Thu, 01 Jun 2023 09:32:27 GMT https://trid.trb.org/View/2157307 Experimental performance and emissions of additively manufactured high-temperature combustion chambers for micro-gas turbines https://trid.trb.org/View/2140225 Tue, 23 May 2023 10:12:38 GMT https://trid.trb.org/View/2140225 Development of a medium-duty stoichiometric diesel micro-pilot natural gas engine https://trid.trb.org/View/2140222 Tue, 23 May 2023 10:12:38 GMT https://trid.trb.org/View/2140222 Multiple fuel injection strategy for premixed charge compression ignition combustion engine using biodiesel blends https://trid.trb.org/View/2120665 Thu, 23 Mar 2023 10:20:42 GMT https://trid.trb.org/View/2120665 Fuel equivalence ratio and EGR impact on premixed combustion rate and emission output, on a Heavy-Duty Diesel engine https://trid.trb.org/View/1805531 Thu, 15 Dec 2022 14:15:19 GMT https://trid.trb.org/View/1805531 An Experimental Study on Characteristics of Premixed Propane Combustion with N₂/CO₂/O₂ Dilution https://trid.trb.org/View/2038798 Mon, 28 Nov 2022 10:56:46 GMT https://trid.trb.org/View/2038798 Modeling of Benzene Formation in Rich Premixed Flames https://trid.trb.org/View/1810591 Tue, 27 Sep 2022 14:54:53 GMT https://trid.trb.org/View/1810591 Characteristics of Combustion in Stratified Mixture https://trid.trb.org/View/1797151 Mon, 26 Sep 2022 09:12:49 GMT https://trid.trb.org/View/1797151 Effects of Fuel Volatility on Combustion Characteristics of PCCI Diesel Engine https://trid.trb.org/View/1812875 Mon, 26 Sep 2022 09:12:48 GMT https://trid.trb.org/View/1812875 A Study of PCCI Combustion Control Method using Low-Pressure Impingement Spray of DISI Swirl Injectors and GTL Fuel https://trid.trb.org/View/1982965 Sun, 31 Jul 2022 15:21:30 GMT https://trid.trb.org/View/1982965 Mechanism of thermal efficiency improvement in twin shaped semi-premixed diesel combustion https://trid.trb.org/View/1953313 Thu, 21 Jul 2022 11:32:43 GMT https://trid.trb.org/View/1953313