Pulse detonation technology can be a revolutionary approach for propulsion system since it offers significant fuel efficiency, higher thrust to weight ratio and low cost. Although the design concept of a pulse detonation engine is comparatively simple, but the development and stabilization of sustainable detonation wave front is difficult. Consequently pulse detonation engine technology is stil...

Computational fluid dynamics (CFD) analysis may quantify the severity of anatomical airway restriction in obstructive sleep apnea syndrome (OSAS) better than anatomical measurements alone. However, optimal CFD model endpoints to characterize or assess OSAS have not been determined. To model upper airway fluid dynamics using CFD and investigate the strength of correlation between various CFD end...

In high speed engines, thorough turbulent mixing of fuel and air is required to obtain high performance and high efficiency. Thus, the ability to predict turbulent mixing is crucial in obtaining accurate numerical simulation of an engine and its performance. Current state of the art in CFD simulation is to assume both turbulent Prandtl number and Schmidt numbers to be constants. However, since ...

• CFD-guided optimization of an engine combustion system using Oxymethylene Ether. Obtention a configuration adapted to OME properties. Optimized maximized efficiency and decreased NOx for the low-sooting fuel. A neural network model was trained from obtained data sensitivity analysis. In this study, numerical methodology chamber in compression ignited engines as fuel is presented. The objectiv...

Compared to other traditional engines, the Stirling engine is an externally closed heat loop with a high theoretical efficiency and low emissions. Due its multi-fuel capacity, including solar, biogas geothermal energy, this property now becoming very advantageous. However, performance of penalized when being integrated source. Thus, research on enhancing engine's through transfer highlighted in...

the purpose of this paper is to studying nonlinear k-ε turbulence models and its advantages in internal combustion engines, since the standard k-ε model is incapable of representing the anisotropy of turbulence intensities and fails to express the reynolds stresses adequately in rotating flows. therefore, this model is not only incapable of expressing the anisotropy of turbulence in an engine c...