Results 61 to 70 of about 1,248,702 (199)
Energy Science &Engineering, EarlyView.A piston bowl's design and spray angle improve air‐fuel mixing, resulting in more complete combustion and higher efficiency. Ansys Forte 2023 R1 a CFD software was used to analyze the effects of five combustion chamber geometries of cylinder, modified re‐entrant, re‐entrant, double‐stepped, and stepped on engine performance, combustion, and emission ...
Md. Nazmul Haque +7 more
wiley +1 more source
Diffusion welding of nickel-based superalloys [PDF]
, 2011 Ni based superalloys can be welded by diffusion bonding. Temperature, diffusion coefficient, activation energy and Boltzmann constant influence the quality of diffusion bonding, so obtaining the best condition for welding is considered.
Rezaei, Hossein
core +1 more source
Driven diffusion in nanoscaled materials [PDF]
, 2015 Mass transfer processes in which specific interactions with environments lead to complex diffusion patterns, such as the occurrence of transient sub-diffusive behaviors or of heterogeneous diffusion, were studied by means of two different experimental ...
Heidernätsch, Mario +10 more
core +1 more source
Nihon Kikai Gakkai ronbunshu, 2019 This paper proposes a novel topology optimization method for unsteady state incompressible Navier-Stokes flow. Many methods of topology optimization for steady state flow have been proposed, whereas most fluid flow problems should be considered as ...
Atsushi KOGUCHI +4 more
doaj +1 more source
Energy Science &Engineering, EarlyView.Turbulence intensity from 1% to 25% was parametrically tested on a three‐bladed H‐type Darrieus rotor across five tip speed ratios (TSRs) using two‐dimensional URANS. The optimal TSR proved the most efficient and most robust operating point simultaneously, with Cp losses capped at 5.8% even at TI = 25%. ABSTRACT The effect of inlet turbulence intensity
Aydin Ulus
wiley +1 more source
Modeling of unsteady aerodynamic loads
, 2011 Time-accurate solutions of the Euler or Navier-Stokes equations are still nowadays a computationally expensive approach for applications where a magnitude of parameters has to be investigated. This work focuses on flight dynamics-related studies.
Cummings, R. M. +4 more
core +1 more source
New similarity method analysis of the transient thermal boundary layer on a horizontal flat plate St
Journal of Thermal EngineeringThe present project highlights the behavior of the unsteady heat transfer phenomenon developing along a horizontal surface in terms of both Strouhal and Prandtl numbers.
Mohamed BACHIRI
doaj +1 more source
Results in Physics, 2017 This communication addresses the Darcy-Forchheimer flow by an unsteady curved stretching surface. Flow in porous medium is characterized by Darcy-Forchheimer relation. Cattaneo-Christov double diffusion expressions are implemented in modelling.
Tasawar Hayat +3 more
doaj +1 more source
Energy Science &Engineering, EarlyView.Variable‐rate hydraulic fracturing can induce unsteady flow in the tubing, thereby generating fluctuating fluid pressure near the bottom‐hole reservoir. Dynamic stress is generated in the reservoir under the action of fluctuating fluid pressure and propagates as stress waves.
Zhu Ge, Wang Chaojing, Li Weicheng
wiley +1 more source
Effective diffusion tensor computed by homogenization [PDF]
, 2013 The convergence of the long-time apparent diffusion tensor of diffusion magnetic resonance imaging (dMRI) to the effective diffusion tensor obtained by mathematical homogenization theory was considered for two-compartment geometric models containing non ...
Grebenkov, Denis +4 more
core +1 more source