CFD Simulation and Visual Analysis of Complex Time-Dependent Flight Vehicle Flow Fields

2000 ◽  
Author(s):  
David L. Marcum
Keyword(s):  
Visual Analysis ◽  
Cfd Simulation ◽  
Flow Fields ◽  
Time Dependent ◽  
Flight Vehicle ◽  
Complex Time

scholarly journals Design of a Turbulence Generator of Medium Consistency Pulp Pumps

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Hong Li ◽  
Haifei Zhuang ◽  
Weihao Geng
Keyword(s):  
Mathematical Model ◽  
Cfd Simulation ◽  
Liquid Structure ◽  
Flow Fields ◽  
Hydraulic Performance ◽  
Flow Section ◽  
Simple Mathematical Model ◽  
Similar Shape ◽  
Turbulence Generator

The turbulence generator is a key component of medium consistency centrifugal pulp pumps, with functions to fluidize the medium consistency pulp and to separate gas from the liquid. Structure sizes of the generator affect the hydraulic performance. The radius and the blade laying angle are two important structural sizes of a turbulence generator. Starting with the research on the flow inside and shearing characteristics of the MC pulp, a simple mathematical model at the flow section of the shearing chamber is built, and the formula and procedure to calculate the radius of the turbulence generator are established. The blade laying angle is referenced from the turbine agitator which has the similar shape with the turbulence generator, and the CFD simulation is applied to study the different flow fields with different blade laying angles. Then the recommended blade laying angle of the turbulence generator is formed to be between 60° and 75°.

scholarly journals Interactive design of complex time dependent lighting

1995 ◽  
Vol 15 (2) ◽  
pp. 26-36 ◽  
Author(s):  
J. Dorsey ◽  
J. Arvo ◽  
D. Greenberg
Keyword(s):  
Interactive Design ◽  
Time Dependent ◽  
Complex Time

scholarly journals Bootstrapping complex time‐to‐event data without individual patient data, with a view toward time‐dependent exposures

2019 ◽  
Vol 38 (20) ◽  
pp. 3747-3763 ◽  
Author(s):  
Tobias Bluhmki ◽  
Hein Putter ◽  
Arthur Allignol ◽  
Jan Beyersmann ◽  
Keyword(s):  
Individual Patient Data ◽  
Patient Data ◽  
Time Dependent ◽  
Event Data ◽  
Time To Event ◽  
Complex Time ◽  
Time To Event Data

CFD Simulation of Spraying with Air Jet

2012 ◽  
Vol 455-456 ◽  
pp. 228-233
Author(s):  
Wei Dong Jia ◽  
Cheng Li ◽  
Jun Lu ◽  
Ning Yang ◽  
Zhen Tao Wang
Keyword(s):  
Fluid Dynamics ◽  
Software Package ◽  
Cfd Simulation ◽  
Spray Deposition ◽  
Flow Fields ◽  
Droplet Deposition ◽  
Air Jet ◽  
Tunnel Model ◽  
Spray Droplets ◽  
Jet Velocity

Droplet drift is always an accompaniment of pesticide spraying and can cause serious consequences. In this paper, we used a computational fluid dynamics software package (FLUENT) to analyze flow fields of spraying with air jet under different conditions in the tunnel model, and compared the effect of air jet on spray deposition and drift. Results of this study indicate that air jet can act directly on the spray droplets and affect their distribution and movement. Larger jet velocity has better performance on the drift reduction and droplet deposition. Droplets in the flow fields with larger jet velocity can get more kinetic energy and arrive at the root of crops easilier. When droplets are released straight down, larger velocity of droplets can be given and better performance can be achieved either in terms of drift reduction or droplet deposition.

scholarly journals CFD simulation of PEM fuel cell performance: Effect of straight and serpentine flow fields

2012 ◽  
Vol 55 (3-4) ◽  
pp. 1540-1557 ◽  
Author(s):  
Fatemeh Hashemi ◽  
Soosan Rowshanzamir ◽  
Mashallah Rezakazemi
Keyword(s):  
Fuel Cell ◽  
Cfd Simulation ◽  
Pem Fuel Cell ◽  
Flow Fields ◽  
Cell Performance ◽  
Performance Effect ◽  
Fuel Cell Performance
Sign in / Sign up

Export Citation Format

Share Document