AN ADAPTIVE STREAMLINE TRACKING METHOD FOR TWO-DIMENSIONAL CFD VELOCITY FIELDS BASED ON THE LAW OF MASS CONSERVATION

2006 ◽  
Vol 13 (1) ◽  
pp. 1-14 ◽  
Author(s):  
Zhenquan Li
Keyword(s):  
Mass Conservation ◽  
Velocity Fields ◽  
Two Dimensional ◽  
Tracking Method ◽  
The Law

A Mass Conservative Streamline Tracking Method for Three Dimensional CFD Velocity Fields

2003 ◽  
Author(s):  
Zhenquan Li
Keyword(s):  
Incompressible Flows ◽  
Three Dimensional ◽  
Mass Conservation ◽  
Flow Fields ◽  
Construction Method ◽  
Velocity Fields ◽  
Three Dimensions ◽  
Linear Mass ◽  
Tracking Method

Mass conservation is a key issue for accurate streamline visualization of flow fields. This paper presents a mass conservative streamline construction method for CFD velocity fields defined at discrete locations in three dimensions for incompressible flows. Linear mass conservative interpolation is used to approximate velocity fields. Demonstration examples are shown.

Conservative Front-Tracking Method for 2-Dimensional Deformable Drops

2013 ◽  
Author(s):  
Lei Chang ◽  
Yanning Yang
Keyword(s):  
Numerical Study ◽  
Mass Conservation ◽  
Front Tracking ◽  
Computer Code ◽  
Two Dimensional ◽  
Numerical Work ◽  
Tracking Method ◽  
Front Tracking Method ◽  
Improved Model ◽  
Energy Equations

Here we present an unsteady two-dimensional numerical study on drops migrating in a matrix fluid. A computer code is developed to simulate the temperature distribution and velocity field both inside and outside drops. The governing momentum and energy equations are solved by finite-difference method and the deformable interface of drops is captured by front-tracking technique. The moving interface advection in front-tracking method is improved and mass conservation is maintained during the entire course of drop migration. Simulation results show that our improved model is consistent with previous numerical work on this subject. With the numerical model, two-dimensional thermocapillary motion of drops is studied.

Evaluating the law of the wall in two-dimensional fully developed turbulent channel flows

2003 ◽  
Vol 15 (10) ◽  
pp. 3079 ◽  
Author(s):  
E.-S. Zanoun ◽  
F. Durst ◽  
H. Nagib
Keyword(s):  
Channel Flows ◽  
Two Dimensional ◽  
Law Of The Wall ◽  
Turbulent Channel Flows ◽  
The Law

scholarly journals Quasi-periodic forces and conditionally averaged characteristics of unsteady cavitation flow around a hydrofoil

2021 ◽  
Vol 2119 (1) ◽  
pp. 012030
Author(s):  
E I Ivashchenko ◽  
M Yu Hrebtov ◽  
R I Mullyadzhanov
Keyword(s):  
Reynolds Number ◽  
Liquid Phase ◽  
High Reynolds Number ◽  
Velocity Fields ◽  
Large Eddy Simulations ◽  
Two Dimensional ◽  
Cavitation Flow ◽  
Large Eddy ◽  
High Reynolds ◽  
Conditional Averaging

Abstract Large-eddy simulations are performed to investigate the cavitating flow around two dimensional hydrofoil section with angle of attack of 9° and high Reynolds number of 1.3×106. We use the Schnerr-Sauer model for accurate phase transitions modelling. Instantaneous velocity fields are compared successfully with PIV data using the methodology of conditional averaging to take into account only the liquid phase characteristics as in PIV. The presence of two frequencies in a spectrum corresponding to the full and partial cavity detachments is analysed.

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