Laminar Flow Gas Turbine Regenerators--The Influence of Manufacturing Tolerances.
STANFORD UNIV CA DEPT OF MECHANICAL ENGINEERING
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Several current designs for high effectiveness gas turbine regenerators involve low Reynolds No. fully-developed laminar-flow type surfaces. Such surfaces consist of cylindrical flow passages, of small hydraulic radius, in parallel and the cylinder geometry may, as examples, be triangular, as in some glass-ceramic surfaces, or rectangular, as in deep-fold metal foil surfaces. This presentation demonstrates that manufacturing tolerances of several thousandths of an inch in passage dimension have a significant influence on the overall heat transfer and flow friction behavior. The analysis is also useful in rationalizing the difference between theory and test results for the basic heat transfer j factor characteristics as a function of Reynolds No. for various surfaces of the laminar-flow type. Author
- Manufacturing and Industrial Engineering and Control of Production Systems
- Jet and Gas Turbine Engines