The Mode Analysis Of Turbo-charger' Blades And CFD Analysis Of Compresser

This article is based on the item middle-sized and small-sized corporation innovation fund of YUNNAN province. I used software I-DEAS and Three-dimensional object scanner which is advanced in our country to build the modal of compressor turbine and blades.This article analysed the first ten ranks vibration-modes of blades, so the blade's natural frequency of each rank and their corresponding vibration mode are gained, places where the flaws and ruptures will occur. What is more, I have computed the frequency which effected by centrifugal inertia force, through that, I find the frequency discrepancy between static state and rotating stating is so small that the frequency in static state can instead of it in rotating state. In contrast to revolving speeding of the turbo-charger and the passing frequencies of the blades, the blade's syntonic frequencies are obtained. While,I bring forward methods of adjusting frequencies of blades to avoid their resonace. So the severe vibration are avoided.In this article I also built the object model of compressor internal flow channels. I simulate the flow field of compressor under the assumptions of three-dimensional vicosity and steadiness. So this established base on design for main parts of turbo-charger and resolved for vibration of blades.