Oblique stagnation flow towards a rotating disc

2021 ◽  
Vol 85 ◽  
pp. 82-89
Author(s):  
Suman Sarkar ◽  
Bikash Sahoo
Keyword(s):  
Stagnation Flow ◽  
Rotating Disc

scholarly journals Flow Near a Rotating Disc with Stagnation Flow.

1997 ◽  
Vol 23 (5) ◽  
pp. 713-719 ◽  
Author(s):  
Fumimaru Ogino ◽  
Yasushi Saito ◽  
Hajime Matsumoto
Keyword(s):  
Stagnation Flow ◽  
Rotating Disc

scholarly journals Parametric Analysis of Entropy Generation in Off-centered Stagnation Flow Towards a Rotating Disc

2014 ◽  
Vol 3 (1) ◽  
pp. 27-41 ◽  
Author(s):  
M.M. Rashidi ◽  
L. Shamekhi ◽  
Sunil Kumar
Keyword(s):  
Partial Differential Equations ◽  
Differential Equations ◽  
Entropy Generation ◽  
Nonlinear Differential Equations ◽  
Nonlinear Partial Differential Equations ◽  
Stagnation Flow ◽  
Rotating Disc ◽  
Partial Differential ◽  
Keller Box Method ◽  
Box Method

AbstractThe similarity solution for the steady stagnation flow towards an off-centered rotating disc is gives a systemof non-linear partial differential equations. These nonlinear differential equations are numerically solved by applyingwell known Keller-Box Method. After finding the velocity distributions, the important designing subject, entropy generation of this system has been analyzed. Graphical results are presented to investigate effects of the rotation ratio α, off-centering, Reynolds number and axial height on the radial and azimuthal velocities and entropy generation. In order to show the effectiveness of the Keller- Box method, the obtained results are compared with available solutions obtained using DTM. The obtained results demonstrate the reliability of the algorithm and the Keller- Box method is an attractive method in solving the systems of nonlinear partial differential equations, and also the entropy generation is an important parameter depends on design andwork conditions that should be in the attention of designers of these rotating systems.

THE MODIFIED DIFFERENTIAL TRANSFORM METHOD FOR SOLVING OFF-CENTERED STAGNATION FLOW TOWARD A ROTATING DISC

2010 ◽  
Vol 07 (04) ◽  
pp. 655-670 ◽  
Author(s):  
ESMAEEL ERFANI ◽  
MOHAMMAD MEHDI RASHIDI ◽  
AMIR BASIRI PARSA
Keyword(s):  
Partial Differential Equations ◽  
Differential Equations ◽  
Nonlinear Differential Equations ◽  
Nonlinear Partial Differential Equations ◽  
Differential Transform Method ◽  
Stagnation Flow ◽  
Rotating Disc ◽  
Partial Differential ◽  
Transform Method ◽  
Differential Transform

The similarity solution for the steady stagnation flow toward an off-centered rotating disc gives a system of nonlinear partial differential equations. These nonlinear differential equations are analytically solved by applying a newly developed method called DTM–Padé technique (the combination of the differential transform method (DTM) and the Padé approximation). This technique is extended to give solutions for nonlinear differential equations with boundary conditions at infinity. Graphical results are presented to investigate influence of the rotation ratio α on the radial velocity, azimuthal velocity, and the induced velocity. In order to show the effectiveness of the DTM–Padé technique, the results obtained from the DTM–Padé technique are compared with available solutions obtained using shooting method to generate the numerical solution. The obtained results demonstrate the reliability of the algorithm and the DTM–Padé technique is an attractive method in solving the systems of nonlinear partial differential equations.

scholarly journals A numerical study for off-centered stagnation flow towards a rotating disc

2015 ◽  
Vol 4 (3) ◽  
pp. 169-178 ◽  
Author(s):  
M. Heydari ◽  
G.B. Loghmani ◽  
M.M. Rashidi ◽  
S.M. Hosseini
Keyword(s):  
Numerical Study ◽  
Stagnation Flow ◽  
Rotating Disc

Comparison of copper sulphate pentahydrate growth rates determined by different methods

1990 ◽  
Vol 55 (7) ◽  
pp. 1691-1707 ◽  
Author(s):  
Miloslav Karel ◽  
Jiří Hostomský ◽  
Jaroslav Nývlt ◽  
Axel König
Keyword(s):  
Growth Rate ◽  
Crystal Growth ◽  
Fluidized Bed ◽  
Growth Rates ◽  
Copper Sulphate ◽  
Crystal Growth Rate ◽  
Effect Of Temperature ◽  
Rotating Disc ◽  
Shape Factors ◽  
Data Treatment

Crystal growth rates of copper sulphate pentahydrate (CuSO4.5 H2O) determined by different authors and methods are compared. The methods included in this comparison are: (i) Measurement on a fixed crystal suspended in a streaming solution, (ii) measurement on a rotating disc, (iii) measurement in a fluidized bed, (iv) measurement in an agitated suspension. The comparison involves critical estimation of the supersaturation used in measurements, of shape factors used for data treatment and a correction for the effect of temperature. Conclusions are drawn for the choice of values to be specified when data of crystal growth rate measurements are published.

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