... and flame propagation. This paper aims to quantify the cooling effect of methanol in a heavy-duty dual-fuel direct injection compression ignition (DICI) engine environment. The presented methodology uses computational fluid dynamics (CFD) simulations to model methanol sprays with validation originating from...

... loss. It was found that the hot fluid coming from the TES accounts for 80% of the total pump power after optimization because of its low density and its high mass flow rate. Furthermore, three-dimensional simulations by computational fluid dynamics (CFD) were done and compared to the results from...

... 25 10 2024 heat transfer turbulence natural convection low-order modeling computational fluid dynamics Accurate prediction of natural convection heat transfer is of significance for investigating a wide range of applications such as gas turbines (during the shutdown...

...Jonathan T. Lipkowicz; Simon Gövert; Bertram Janus The low dissipation low dispersion (LD2) second-order accurate scheme is effective for scale-resolving simulations in finite volume computational fluid dynamics (CFD) solvers, thanks to its combination of a skew-symmetric split form for convective...

..., while in space it is achieved through a mathematical function defined in a continuous flame index space. The equation is numerically integrated with a semi-implicit scheme by making use of the backward Euler formula. The strategy has been implemented in a commercial computational fluid dynamics (CFD...

... has been conducted to investigate the flow evolution in medium- to large-sized engines using laser-based diagnostic methods, computational fluid dynamics (CFD) simulations, and zero-dimensional (0D) based modeling. In the present study, we provide a detailed analysis of the evolution of flow fields...

... different mass flow rates and two rotational speeds In Fig. 19 , the hydraulic efficiency and pressure ratio from the present study and the experimental results are plotted. Generally, good agreement between the computational fluid dynamics (CFD) and experimental results is observed. At low flow...

...) parametric conjugate heat transfer computational fluid dynamic (CFD) model for tilting pad journal bearings (TPJBs) is introduced in this paper to address the temperature aspects of oil-film bearings. The parametric geometry of the model and the automatic mesh update, allow the equilibrium position search...

... a challenge for computational fluid dynamics (CFD). Successful application of CFD as a design tool requires experimental validation and can be supplemented by physically based theoretical modeling as documented in Owen et al. [ 6 ]. The practical application of this research is to improve the predictive...

...-mail:  avinash.renuke@mdu.se 02 08 2023 22 08 2023 26 10 2023 Tesla expanders computational fluid dynamics energy harvesting bladeless turbine small turbomachinery stator less volute The Tesla turbine or bladeless turbine is a revolutionary design that has the potential...

... conditions representing the dynamic and complex fluid flow inside engines. To meet this requirement, the present study focuses on transient thermomechanical stress analysis using a sequentially coupled computational fluid dynamics (CFD)–finite element analysis (FEA) approach to understand transient...

... clearance. Other force coefficients for both seals, namely, cross-coupled stiffness (k) and direct damping (C) increase as the inlet liquid volume fraction (LVF) grows. Rationale for the peculiar differences in centering stiffness (K) is missing. Hence, a computational fluid dynamics (CFD) model and its...

...Harsh Darshan Sapra; Randy Hessel; Eri Amezcua; Jacob Stafford; Niranjan Miganakallu; David Rothamer; Kenneth Kim; Chol-Bum M. Kweon; Sage Kokjohn Computational fluid dynamics (CFD) simulations are performed to study the potential of energy-assisted compression ignition (EACI) strategy for enabling...

... s = specific t = total ti = total inlet CFD = Computational Fluid Dynamics Acronyms CFD = computational fluid dynamics DoR = degree of reaction TPC = total pressure loss coefficient References [1] Tesla , N. , 1913 , “ Turbine...

...Fatih Aktas With developing in computer technology, three-dimensional (3D) computational fluid dynamics (CFD) internal combustion (IC) engine simulations, which generally use reduced chemical kinetic mechanisms and simplified combustion models, can provide more accurate results along with less...

.... A three-dimensional computational fluid dynamics engine model incorporated with detailed biodiesel combustion kinetics and NO x formation kinetics was validated against measured in-cylinder pressure, temperature, and engine-out nitric oxide emission from diesel engine. This valid model was then employed...

...Shine Win Naung; Mohammad Rahmati; Hamed Farokhi The high-fidelity computational fluid dynamics (CFD) simulations of a complete wind turbine model usually require significant computational resources. It will require much more resources if the fluid–structure interactions (FSIs) between the blade...

...@gti.energy 02 09 2020 05 10 2020 04 01 2021 oxy-combustion supercritical CO 2 computational fluid dynamics CFD tabulated chemistry real fluid contaminants NO x SO x The challenge in the design of oxy-combustors for direct-fired supercritical CO 2 (sCO 2 ) cycles...

... flow fields throughout 100 consecutive cycles. The computational fluid dynamics program CONVERGE [ 14 ] was used for the calculation. The base cell size is set to 1 mm as shown in Fig. 1(a) . In order to reflect the influence of the valve movement and wall boundary layer, the mesh cells near...

.... In Part II, five cases of geometry with different axial distances between the swirl breaker and the rotor shroud, which covered a range for the stage axial distance of actual high and intermediate pressure (HIP) steam turbines, were investigated using a single-rotor computational fluid dynamics (CFD...