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Welcome to MIXFLO logo2.gif

A CFD program

fo
r the


design and fluid dynamic analysis
of

Turbomachines

Produced by

Emeritus Professor R.I.Lewis

e-mail address: R.I.Lewis@ncl.ac.uk

Introduction

 MIXFLO is a turbomachinery design/analysis CFD package based upon the surface vortex element method(1) (2) for numerical modelling of inviscid rotational flows, and has been prepared for use on IBM compatible PCs. The programs provided are written in Delphi4 code for use on Pentium computers with colour monitor and no less than 4 MB of memory.

Runner.gif MIXFLO is intended to serve primarily as a designer's tool for the geometrical design and detailed fluid dynamic performance analysis of a wide range of incompressible turbomachines comprising up to six blade rows and including axial, mixed-flow or radial fans and pumps, hydraulic (Kaplan or Francis) turbines, ducted fan or propeller elements and individual blade cascades. Equally valuable however is its use for teaching the overall and detailed strategies involved in designing turbomachines or blade cascades and for learning how to assess one's design decisions fluid-dynamically on-line during the design process. With this in mind MIXFLO provides a range of viewing menus including graphical presentation of the annulus geometry, the complete blade or individual blade section geometry, views of blade section surface pressure or velocity distribution and presentations of the blade-to-blade streakline patterns. MIXFLO thus provides a powerful design tool but also an extremely instructive hands-on tool for student design project work, especially useful for final year or Masters' studies.

MIXFLO is supplied with a comprehensive user's self-instruction manual Part I of which introduces the various pull-down menu facilities. In addition to this six test-cases are presented in Part II of the manual, data files for which are supplied together with the MIXFLO executable codes on a 3.5 inch floppy disk. The computer codes are written in Deplhi4 to run under Windows 95 (or later). Also supplied are two associated executable codes, namely MIX, for the mixed-flow blade-to-blade analysis of rotor or stator blade rows and FLO, a code for axisymmetric meridional flow analysis of turbomachinery annuli.

(1) R.I.Lewis - Vortex Element Method for Fluid Dynamic Analysis of Engineering Systems. Cambridge University Press, 1991
(2) R.I.Lewis - Turbomachinery Performance Analysis. W. Arnold, 1996

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