Numerical study of the effect of free convection on the development of vertical turbulence in a semiinfinite gas jet

1983 ◽  
Vol 44 (6) ◽  
pp. 629-635
Author(s):  
V. I. Golovichev ◽  
M. A. Gorokhovskii ◽  
V. P. Kashkarov
Keyword(s):  
Free Convection ◽  
Numerical Study ◽  
Gas Jet ◽  
Vertical Turbulence

NUMERICAL STUDY OF DIFFUSION COMBUSTION OF PULVERIZED COAL IN A GAS JET

2021 ◽  
Vol 62 (3) ◽  
pp. 484-489
Author(s):  
E. B. Butakov ◽  
V. A. Kuznetsov ◽  
A. V. Minakov ◽  
A. A. Dekterev ◽  
S. V. Alekseenko
Keyword(s):  
Numerical Study ◽  
Pulverized Coal ◽  
Gas Jet ◽  
Diffusion Combustion

Pin-Fin Heat Sink With Horizontal Base and Blocked Edges

2008 ◽  
Author(s):  
D. Sahray ◽  
H. Shmueli ◽  
N. Segal ◽  
G. Ziskind ◽  
R. Letan
Keyword(s):  
Heat Transfer ◽  
Free Convection ◽  
Contact Resistance ◽  
Cross Section ◽  
Heat Input ◽  
Heat Sink ◽  
Numerical Study ◽  
Heat Sinks ◽  
Transfer Enhancement ◽  
Pin Fin

In the present work, horizontal-base pin fin heat sinks exposed to free convection in air are studied. They are made of aluminum, and there is no contact resistance between the base and the fins. For the same base dimensions the fin height and pitch vary. The fins have a constant square cross-section. The edges of the sink are blocked: the surrounding insulation is flush with the fin tips. The effect of fin height and pitch on the performance of the sink is studied experimentally and numerically. In the experiments, the heat sinks are heated using foil electrical heaters. The heat input is set, and temperatures of the base and fins are measured. In the corresponding numerical study, the sinks and their environment are modeled using the Fluent 6 software. The results show that heat transfer enhancement due to the fins is not monotonic. The differences between sparsely and densely populated sinks are analyzed for various fin heights. Also assessed are effects of the blocked edges as compared to the previously studied cases where the sink edges were exposed to the surroundings.

scholarly journals Dissipation Effect On A Free Convection Flow Past A Porous Vertical Plate

1970 ◽  
Vol 6 (1) ◽  
pp. 52-59
Author(s):  
Amena Ferdousi ◽  
MA Alim
Keyword(s):  
Free Convection ◽  
Vertical Plate ◽  
Numerical Study ◽  
Porous Plate ◽  
Convection Flow ◽  
Free Convection Flow ◽  
Box Scheme ◽  
Flow Through ◽  
Implicit Finite Difference ◽  
Boundary Equations

A Numerical study on the effect of dissipation on a steady free convection flow through a porous vertical plate is made. The relevant non-leaner boundary equations are made dimensionless using specific non-dimensional variables. The corresponding non-similar partial differential equations are solved using implicit finite difference method with Keller-Box scheme. The results are then presented graphically and discussed thereafter. Keywords: porous plate; viscous dissipation; natural convection. DOI: http://dx.doi.org/10.3329/diujst.v6i1.9334 DIUJST 2011; 6(1): 52-59

Free Convection in a Vertical Duct: Numerical Study

2011 ◽  
Vol 42 (6) ◽  
pp. 539-555
Author(s):  
F. Z. Bakhti ◽  
Mohamed Si-Ameur ◽  
A. M. Chehhat
Keyword(s):  
Free Convection ◽  
Numerical Study ◽  
Vertical Duct

Numerical Study of Free Convection in a Doubly Stratified Non-Darcy Porous Medium Using Spectral Quasilinearization Method

2015 ◽  
Vol 16 (3-4) ◽  
pp. 173-183 ◽  
Author(s):  
D. Srinivasacharya ◽  
Sandile S. Motsa ◽  
O. Surender
Keyword(s):  
Porous Medium ◽  
Free Convection ◽  
Numerical Study ◽  
Saturated Porous Medium ◽  
Nonlinear Partial Differential Equations ◽  
Darcy Number ◽  
Skin Friction Coefficient ◽  
Linearization Method ◽  
Convection Boundary Layer ◽  
Local Skin

AbstractFree convection boundary layer flow past a semi-infinite vertical plate in a doubly stratified fluid-saturated porous medium in the presence of constant suction/injection is analyzed. The flow in the porous medium is described by the Brinkman–Forchheimer-based model. A suitable coordinate transformation is introduced, and the obtained system of non-similar, coupled and nonlinear partial differential equations is solved numerically using the spectral quasi-linearization method. The effects of buoyancy parameter, Darcy number, Forchheimer parameter, suction/injection parameter, thermal and solutal stratification parameters on the dimensionless velocity, temperature and concentration are presented graphically. Further, the local skin friction coefficient, heat and mass transfer rates are presented graphically.

scholarly journals The Numerical Study of Channel Flow in Turbulent Free Convection with Radiation and Blowing

2014 ◽  
Vol 3 (2) ◽  
pp. 11-26 ◽  
Author(s):  
Siamak Hosseinzadeh ◽  
Ali Yari ◽  
Ehsan Abbasi ◽  
Faezeh Absalan
Keyword(s):  
Free Convection ◽  
Channel Flow ◽  
Numerical Study
Sign in / Sign up

Export Citation Format

Share Document