A Numerical Study of Vortex Dynamics of Flexible Wing Propulsors

2011 ◽  
Author(s):  
Kartik Venkatraman
Keyword(s):  
Vortex Dynamics ◽  
Numerical Study ◽  
Flexible Wing

scholarly journals Numerical study of rigid and flexible wing shapes in hover

2017 ◽  
Vol 822 ◽  
pp. 012007 ◽  
Author(s):  
Aamer Shahzad ◽  
Fang-Bao Tian ◽  
John Young ◽  
Joseph C S Lai
Keyword(s):  
Numerical Study ◽  
Flexible Wing

Numerical study of air-core vortex dynamics during liquid draining from cylindrical tanks

2014 ◽  
Vol 46 (2) ◽  
pp. 025508 ◽  
Author(s):  
Sam Mathew ◽  
B S V Patnaik ◽  
T John Tharakan
Keyword(s):  
Vortex Dynamics ◽  
Numerical Study ◽  
Air Core ◽  
Cylindrical Tanks

scholarly journals Numerical Study on Hydrodynamic Force and Wave Induced Vortex Dynamics around Cylindrical Pile

2018 ◽  
Vol 1 (4) ◽  
pp. 1-11 ◽  
Author(s):  
Mohammad Mohammad Beigi Kasvaei ◽  
◽  
Mohammad Hossein Kazeminezhad ◽  
Abbas Yeganeh-Bakhtiary ◽  
◽  
...  
Keyword(s):  
Vortex Dynamics ◽  
Hydrodynamic Force ◽  
Numerical Study ◽  
Wave Induced

A Numerical Study of Heat Transfer Enhancement by a Rectangular Cylinder Placed Parallel to the Heated Wall

2019 ◽  
Vol 141 (7) ◽  
Author(s):  
J. F. Derakhshandeh ◽  
Md. Mahbub Alam
Keyword(s):  
Heat Transfer ◽  
Vortex Dynamics ◽  
Numerical Study ◽  
Vortex Street ◽  
Heated Wall ◽  
Transfer Enhancement ◽  
Maximum Heat ◽  
Single Row ◽  
Rectangular Cylinder ◽  
Maximum Heat Transfer

The flow around a rectangular cylinder mounted in the vicinity of a hot wall is numerically studied at a Reynolds number of 200. While the cylinder chord-to-height ratio C/W is varied from 2 to 10, the gap distance G from the wall to the cylinder is changed from 0.25 to 6.25. The focus of this study is given on the dependence of G/W and C/W on the heat transfer from the wall and associated physics. The variation in the Strouhal number is presented as a function of C/W. It is observed that the effect of G/W on the vortex dynamics and heat transfer is much more than that of C/W. Based on the dependence of the vortex dynamics and heat transfer on G/W, we have identified four distinct flows: no vortex street flow (G/W < 0.75), single-row vortex street flow (0.75 ≤ G/W ≤ 1.25), inverted two-row vortex street flow (1.25 < G/W ≤ 2.5), and two-row vortex street flow (G/W > 2.5). At the single-row vortex street flow, the two opposite-sign vortices appearing in a jetlike flow carry heat from the wall to the wake and then to the freestream. The maximum heat transfer is achieved at the single-row vortex street flow and 8% increase occurs at C/W = 2, G/W = 0.75–1.25.

scholarly journals Numerical study of trailing and leading vortex dynamics in a forced jet with coflow

2019 ◽  
Vol 181 ◽  
pp. 314-344
Author(s):  
Bharat Bhatia ◽  
Ashoke De
Keyword(s):  
Vortex Dynamics ◽  
Numerical Study

Numerical Study of Pulsatile Flow through a Wavy Channel. Vortex Dynamics and Fluid Mixing.

1996 ◽  
Vol 62 (604) ◽  
pp. 4020-4025
Author(s):  
Tatsuo NISHIMURA ◽  
Kenji MATSUBAYASHI ◽  
Koji KUNITSUGU ◽  
Naoki OKA
Keyword(s):  
Vortex Dynamics ◽  
Pulsatile Flow ◽  
Numerical Study ◽  
Fluid Mixing ◽  
Wavy Channel ◽  
Flow Through

EXPERIMENTAL AND NUMERICAL STUDY ON INDETERMINATE-ORIGIN V-NOTCHED JET

2005 ◽  
Vol 19 (28n29) ◽  
pp. 1607-1610
Author(s):  
T. H. NEW ◽  
J. CAI ◽  
H. M. TSAI
Keyword(s):  
Numerical Simulation ◽  
Cross Sections ◽  
Vortex Dynamics ◽  
Vortex Flow ◽  
Flow Model ◽  
Numerical Study ◽  
Streamwise Vortices ◽  
General Flow ◽  
Flow Features ◽  
Dye Visualization

An experimental and numerical study has been carried out on an indeterminate-origin V-notched jet to understand the pertinent vortex dynamics involved in the resultant flow. Laser cross-sections showed that outward-spreading streamwise vortices are formed at both peak and trough locations. The numerical simulation was also able to reproduce the general flow features observed in the same study by employing numerical dye-visualization. In view of the observations, a vortex flow model is proposed to account for the phenomenon.

Statistically Targeted Forcing (STF) Method for Synthetic Turbulence Generation of Initial Conditions in Three-Dimensional Turbulent Mixing Layer Flow

2021 ◽  
Author(s):  
Olalekan O. Shobayo ◽  
D. Keith Walters
Keyword(s):  
Vortex Dynamics ◽  
Turbulent Mixing ◽  
Initial Conditions ◽  
Numerical Study ◽  
Mixing Layer ◽  
Turbulent Stress ◽  
Mean Velocity ◽  
Turbulent Mixing Layer ◽  
Layer Flow ◽  
Turbulence Generation

Abstract Computational fluid dynamics (CFD) results are presented for synthetic turbulence generation of initial conditions for the canonical test case of a temporally-developing turbulent mixing layer (TTML) flow. This numerical study investigates the performance of a newly proposed Statistically Targeted Forcing (STF) method, and its capability to act as a restoring force to match the target mean velocity and turbulent stress in a temporally-developing flow where highly unsteady destabilizing mechanisms and influence are evident. Several previous investigations exist documenting vortex dynamics of the turbulent mixing layer, but limited investigations exist on synthetic turbulence generation forcing methods to prescribe initial conditions. The objective of this study is to evaluate the performance of the newly proposed STF method to capture the vortex dynamics and effectively match target mean velocity and resolved turbulent stress predictions using large-eddy simulation. Results are interrogated and compared to statistical velocity and turbulent stress distributions obtained from DNS simulations available in the literature. Results show that the STF method can successfully reproduce desired statistical distributions in a turbulent mixing layer flow.

Numerical study of the low-frequency atomic dynamics in a Lennard-Jones glass

1998 ◽  
Vol 77 (2) ◽  
pp. 473-484 ◽  
Author(s):  
M. Sampoli, P. Benassi, R. Dell'Anna,
Keyword(s):  
Numerical Study ◽  
Low Frequency ◽  
Lennard Jones
Sign in / Sign up

Export Citation Format

Share Document