Study of the effect of 4-digit NACA variation on airfoil performance using computation fluid dynamics

2020 ◽  
Author(s):  
Muhammad Agung Bramantya ◽  
Ray Rhido Ribuna Ginting
Keyword(s):  
Fluid Dynamics ◽  
Computation Fluid Dynamics

scholarly journals Identification of corner separation modelling in axial compressor stage

2020 ◽  
Vol 178 ◽  
pp. 01035
Author(s):  
Sergey A. Serkov ◽  
Viacheslav A. Sedunin ◽  
Vitalii L. Blinov ◽  
Oleg V. Komarov ◽  
Yurii M. Brodov
Keyword(s):  
Fluid Dynamics ◽  
Axial Compressor ◽  
Separated Flows ◽  
Operating Point ◽  
Compressor Stage ◽  
Main Interest ◽  
Corner Separation ◽  
Computation Fluid Dynamics ◽  
Operation Conditions

The paper presents a study of corner separations in hub to blade region at various operation conditions towards compressor stall. It is known that for compressor flows with low or none separations computation fluid dynamics with RANS methods work quite well, however, for highly separated flows they are no longer entirely valid. Therefore, several criteria were applied for prediction and quantification of possible corner separation, and the main interest of this work is in predicting the separation just before it will actually happen by certain flow metrics, so these metrics can be further used as a ‘pre-stall’ criteria whilst the RANS CFD operating point still behave within its appropriate limits. Also the effect of shear lean is discussed in the presented context.

Software Platform for Computation Fluid Dynamics Simulation of Mixing and Crystallization in a Stirred Vessel

2019 ◽  
Vol 20 (2) ◽  
pp. 1172-1185
Author(s):  
Dong-Hoon Oh ◽  
Rak-Young Jeon ◽  
Derrick Adams ◽  
Woo-Young Jung ◽  
Hong Min Shim ◽  
...  
Keyword(s):  
Fluid Dynamics ◽  
Dynamics Simulation ◽  
Software Platform ◽  
Stirred Vessel ◽  
Computation Fluid Dynamics

CFD Simulation of Different Flow Regimes of the Spout Fluidized Bed with Draft Plates

2017 ◽  
Vol 899 ◽  
pp. 89-94
Author(s):  
Bruna Sene Alves Araújo ◽  
Kássia Graciele dos Santos
Keyword(s):  
Fluid Dynamics ◽  
Fluidized Bed ◽  
Cfd Simulation ◽  
Fluid Dynamic ◽  
Scale Up ◽  
Flow Regimes ◽  
Chemical Transformations ◽  
Experimental Fluid Dynamics ◽  
Computation Fluid Dynamics ◽  
Two Phases

Spout fluidized bed has shown promising for gas-solid contact operations with and without chemical reactions, such as drying, coating, granulation, gasification, pyrolysis, etc. This is because these beds combine features from both spouted and fluidized beds. The other point is the ability to treat chemical transformations involving both heat and mass transfer in combination with particles of various sizes. Therefore, it is extremely important the knowledge of fluid dynamic of the bed, mainly for scale-up projects, which makes computer simulation an essential tool. Researches using the Computation Fluid Dynamics (CFD) proved to be very effective in predicting of particles dynamic in this type of bed. In Computation Fluid Dynamics, the two phases are treated as interpenetration continuous, and these phases are described by equations of conservation of mass, momentum and energy. The goal of the present work was to simulate using CFD experimental fluid dynamics data of a spout fluidized bed. Eight distinct flow regimes were identified which showed up in good agreement with the regime map presented in literature. The results showed that the technique was efficient for the simulation of the hydrodynamic of the bed presented.

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