A CALCULATION PROCEDURE FOR HEAT, MASS AND MOMENTUM TRANSFER IN THREE-DIMENSIONAL PARABOLIC FLOWS

1983 ◽  
pp. 54-73 ◽  
Author(s):  
S.V. PATANKAR ◽  
D.B. SPALDING
Keyword(s):  
Momentum Transfer ◽  
Three Dimensional ◽  
Calculation Procedure ◽  
Parabolic Flows

Calculations of Three-Dimensional, Viscous Flow and Wake Development in a Centrifugal Impeller

1981 ◽  
Vol 103 (2) ◽  
pp. 367-372 ◽  
Author(s):  
J. Moore ◽  
J. G. Moore
Keyword(s):  
Viscous Flow ◽  
Pressure Field ◽  
Three Dimensional ◽  
Inviscid Flow ◽  
Calculation Procedure ◽  
Wake Flow ◽  
Centrifugal Impeller ◽  
Duct Flow ◽  
Reduced Pressure ◽  
Flow Calculation

A partially-parabolic calculation procedure is used to calculate flow in a centrifugal impeller. This general-geometry, cascade-flow method is an extension of a duct-flow calculation procedure. The three-dimensional pressure field within the impeller is obtained by first performing a three-dimensional inviscid flow calculation and then adding a viscosity model and a viscous-wall boundary condition to allow calculation of the three-dimensional viscous flow. Wake flow, resulting from boundary layer accumulation in an adverse reduced-pressure gradient, causes blockage of the impeller passage and results in significant modifications of the pressure field. Calculated wake development and pressure distributions are compared with measurements.

Numerical computation of Taylor vortices

1977 ◽  
Vol 81 (2) ◽  
pp. 295-304 ◽  
Author(s):  
A. K. Majumdar ◽  
D. Brian Spalding
Keyword(s):  
Periodic Boundary Condition ◽  
Periodic Boundary ◽  
Good Accuracy ◽  
Pressure Field ◽  
Three Dimensional ◽  
Taylor Vortices ◽  
Precise Calculation ◽  
Torque Coefficient ◽  
Parabolic Flows ◽  
Small Disturbances

A finite-difference procedure for three-dimensional parabolic flows is used to predict the development of Taylor vortices in the flow between concentric rotating cylinders, resulting from the growth of small disturbances of a Couette flow. Predictions of such flows are presented in the developing and fully developed region. A precise calculation of the wavelength of the vortices has been possible by employing a periodic boundary condition on the pressure field. The predicted torque coefficient compares well with experimental data. The critical Taylor number has also been predicted with good accuracy.

Sign in / Sign up

Export Citation Format

Share Document