Internet based computational fluid dynamics calculation of hypersonic heating

2000 ◽  
Author(s):  
Theodore Lee ◽  
Xiaolin Zhong ◽  
Leslie Gong
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Dynamics Calculation

scholarly journals Computational Fluid Dynamics calculation of a planar solid oxide fuel cell design running on syngas

2017 ◽  
Vol 38 (4) ◽  
pp. 513-521
Author(s):  
Paulina Pianko-Oprych ◽  
Tomasz Zinko ◽  
Zdzisław Jaworski
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Gas Flow ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Ansys Fluent ◽  
Dynamics Calculation ◽  
Shift Reaction

Abstract The present study deals with modelling and validation of a planar Solid Oxide Fuel Cell (SOFC) design fuelled by gas mixture of partially pre-reformed methane. A 3D model was developed using the ANSYS Fluent Computational Fluid Dynamics (CFD) tool that was supported by an additional Fuel Cell Tools module. The governing equations for momentum, heat, gas species, ion and electron transport were implemented and coupled to kinetics describing the electrochemical and reforming reactions. In the model, the Water Gas Shift reaction in a porous anode layer was included. Electrochemical oxidation of hydrogen and carbon monoxide fuels were both considered. The developed model enabled to predict the distributions of temperature, current density and gas flow in the fuel cell.

Observation on sloshing flow and hydrodynamic pressures on cylindrical liquefied natural gas tank with swash bulkhead

2020 ◽  
pp. 147509022095999
Author(s):  
Jeoungkyu Lee ◽  
Yangjun Ahn ◽  
Jieung Kim ◽  
Yonghwan Kim ◽  
Kyung-Kyu Yang ◽  
...  
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Resonance Frequency ◽  
Frequency Ratio ◽  
Internal Flow ◽  
Liquefied Natural Gas ◽  
Frequency Range ◽  
Type C ◽  
Dynamics Calculation ◽  
The Impact

In this study, a series of sloshing model tests were conducted for type-C tanks, particularly to observe the effects of the inner bulkhead and rings. In regular pitch motion, the internal flow by swash bulkhead and rings located inside the tank was observed. The frequency range near the resonance frequency was checked at filling heights of 70%, and sloshing-induced impact pressures were investigated. Through this study, the global flows inside the tank and local flows during impact occurrence at the hemispherical end of the tank were systematically observed, and the impact pressure pattern for each frequency ratio was compared. Due to the swash bulkhead located in the center of the tank, the flow does not move at once and the velocity of the flow is reduced by the inner rings. The flows passing through the swash bulkhead proceed with a time difference, overlapping with the first wave, generating various types of sloshing impact. The results of computational fluid dynamics calculation and the experiment were also compared for limited conditions.

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