Voice production model integrating boundary-layer analysis of glottal flow and source-filter coupling

This paper describes a systematic computational design system for two-dimensional turbine cascades. The system includes a sequence of calculations in which airfoil profiles are designed from velocity diagram requirements and specified geometric parameters, followed by an inviscid global streamline curvature analysis, a magnified reanalysis around the leading edge, and a transitional profile boundary layer and wake mixing analysis. A finite area technique and a body-fitted mesh are used for the reanalysis. The boundary layer analysis is performed using the dissipation-integral method of Walz which has been modified in the present application. Several turbine airfoil profile geometry designs are presented. Also two sample cascade design cases and their calculated performance for a range of Mach numbers and incidence angles are given and discussed.

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The Merk–Chao–Fagbenle method for laminar boundary layer analysis

Applications of Heat, Mass and Fluid Boundary Layers ◽

10.1016/b978-0-12-817949-9.00013-x ◽

2020 ◽

pp. 95-132

Author(s):

R. Layi Fagbenle ◽

Leye M. Amoo ◽

S. Aliu ◽

A. Falana

Keyword(s):

Boundary Layer ◽

Laminar Boundary Layer ◽

Boundary Layer Analysis ◽

Layer Analysis

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Boundary Layer Analysis of Exothermic and Endothermic Kind of Chemical Reaction in the Flow of Non-Darcian Unsteady Micropolar Fluid along an Infinite Vertical Surface

International Journal of Engineering Research in Africa ◽

10.4028/www.scientific.net/jera.28.90 ◽

2017 ◽

Vol 28 ◽

pp. 90-101 ◽

Cited By ~ 8

Author(s):

O.K. Koriko ◽

A.J. Omowaye ◽

Isaac Lare Animasaun ◽

Idris O. Babatunde

Keyword(s):

Boundary Layer ◽

Differential Equations ◽

Chemical Reaction ◽

Micropolar Fluid ◽

Local Heat Transfer ◽

Flow Region ◽

Local Similarity ◽

Suction Parameter ◽

Boundary Layer Analysis ◽

Layer Analysis

The problem of unsteady non – Newtonian flow past a vertical porous surface in the presence of thermal radiation is investigated. Using the theory of boundary layer analysis, the flow of micropolar fluid in the presence of exothermic and endothermic kind of chemical reaction is considered. It is assumed that the relationship between the flow rate and the pressure drop as the fluid flows over a porous medium is non – linear. Using local similarity transformation, the governing partial differential equations of the physical model are reduced to ordinary differential equations. The corresponding boundary value problem is solved numerically using shooting method along with Runge-Kutta Gill method together with quadratic interpolation. It is found that increase in micro-rotation parameter increases the velocity while the micro- rotation decreases across the flow region. Maximum micro-rotation of tiny particles is guaranteed at higher values of suction parameter. Local heat transfer rate decreases with an increase in exothermic /endothermic parameter.

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