Read e-book online An Introduction to Computational Fluid Mechanics by Example PDF

By Sedat Biringen

ISBN-10: 0470102268

ISBN-13: 9780470102268

This new e-book builds at the unique vintage textbook entitled: An advent to Computational Fluid Mechanics through C. Y. Chow which was once initially released in 1979. within the many years that experience handed because this ebook was once released the sphere of computational fluid dynamics has noticeable a few alterations in either the sophistication of the algorithms used but additionally advances within the desktop and software program on hand. This new ebook accommodates the most recent algorithms within the resolution innovations and helps this by utilizing a variety of examples of functions to a wide diversity of industries from mechanical and aerospace disciplines to civil and the biosciences. the pc courses are constructed and to be had in MATLAB. additionally the middle textual content presents up to date answer tools for the Navier-Stokes equations, together with fractional step time-advancement, and pseudo-spectral equipment. the pc codes on the following site:

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9) ∂x 2 ∂y 2 where u and υ are, respectively, the velocity components along the x and y axes. 11) where ur is the velocity component in the radial direction and uθ is the velocity component in the azimuthal direction. Instead of velocity potential, stream function is sometimes used for analyzing planar or axisymmetric incompressible flows. 6). Streamlines, to which the instantaneous velocity vectors are tangent, are described by the equations ψ = constant. 17) It turns out that, similar to the velocity potential, the stream function for planar incompressible flows is also governed by the Laplace equation.

5 at the same time instants. 1 Program Symbol Definition (Main program) A 1+ρ 2 B (1 − ρ)g C 3ρ 4d D Diameter of sphere, d , m D1V, D2V, etc. Velocity increments, DIZ, D2Z, etc. Displacement increments, G Gravitational acceleration, g, m/s H Time increment, h, s NU Kinematic viscosity of fluid, ν, m2 /s PI π RE Reynolds number vd ν RHO Density of body, ρ, kg/m3 RHOBAR Density ratio, ρ, or ρf ρ 1 vi , 2 vi , 1 zi , etc. 2 zi , 2 etc. 2 Motion of a Simple Pendulum (continued) Program Symbol Definition Y, Y0 Circumferential displacement, y or l θ , and its initial value, y0 , respectively, m YV Circumferential displacement in vacuum, yv , m (Subprogram RUNGE) D1P, D2P, etc.

The influence of air on the motion of a projectile is diminishing with increasing diameter, and the optimum angle finally approaches 45◦ . On the curve for the adverse-wind case a sharp dip appears in a region where the Reynolds number starts to exceed the value 3 × 105 . The phenomenon is caused by the abrupt decrease of drag at that particular Reynolds number (see Fig. 2). 7 Contrary to common sense, under certain conditions the maximum range of a projectile can be made longer when it is thrown against the wind instead of in the wind direction.

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An Introduction to Computational Fluid Mechanics by Example by Sedat Biringen

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