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Based on the draft tube of PIV Experimental study of flow

Author: DengWanQuan
Tutor: LiuXiaoBing
School: West China University
Course: Fluid Machinery and Engineering
Keywords: Turbine Tail pipe Internal flow field PIV Measurement
CLC: TK730
Type: Master's thesis
Year: 2006
Downloads: 177
Quote: 2
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Abstract


Turbine internal flow , not only in their energy characteristics have an important impact on the stability of the unit also has serious implications , especially the draft tube vortex flow is an important factor in causing unit stability , therefore , within the draft tube flow studies has been everyone's attention. While its internal flow studies , mainly based on experimental research and numerical simulation analysis, but although with the computer , the development of mathematics and mechanics , mathematical simulation methods have been promoted and possibly some relief pilot , but it does not replace the physical simulation methods, can not provide a complete hydraulic machinery for the new use of features, so the test is still the basic means to obtain data . PIV testing technology along with the development of computers and the development of image processing software developed rapidly , in recent years developed a mechanical fluid flow field on a pilot study of an important technology , more and more research studies are moving in application of PIV direction for development. PIV testing techniques applied from a wide range of low speed to supersonic flow field test , steady flow from the unsteady flow from the gas to the liquid flow of various fluids tested , the test accuracy can basically meet the requirements of modern testing techniques , is a reliable , modern flow field test tools. In this paper, the turbine runner outlet ( turbine draft tube cone ) at the flow field using PIV technology for full flow field trial studies ( including PIV testing methods and data processing techniques ) , by convection field test , and get some more reliable the test results , such as: internal flow turbine draft tube pressure distribution , velocity distribution and other relevant data , the results of these tests will be improved turbine components designed to provide an important basis.

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CLC: > Industrial Technology > Energy and Power Engineering > Water, energy, hydraulic machinery > Hydraulic prime mover,turbine > General issues
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