Large-scale experimental investigation of flow characteristics in labyrinth seal geometries /
a better understanding of the labyrinth flow field and seal
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| Format: | Thesis eBook |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1994.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | a better understanding of the labyrinth flow field and seal also used to assist in identification and understanding of alterations in each region of interest are investigated and be introduced in the seal cavity to reduce ovemu seal between seal distance-tocontact, cavity penetration and can be interchanged to construct a wide range of advanced cavity, stepped seal geometries. The test-section includes a considerably when the distance-to-contact value approaches determining seal performance. development of opposing flow recirculation zones in the upsmm distance-tocontact is addressed. Experimental results imply goveming the relationship between seal leakage resistance and height values. Four separate flow path regions of interest, improved leakage resistance. Seal geometries are examined individual positioning of the seal elements to the desired instances proved detrimental to seal performance. The interest is comprised of a series of acrylic components which leakage resistance coefficient for a given geometry improves leakage. Addition of annular grooves to the geometries mainstream flow path length plays a significant role in measurements for two-dimensional, planar models of multi- order to determine the flow characteristics and leakage over a range of flow Reynolds numbers, and axial rotor performance. Additionally, complicated coupling mechanisms portion of the seal cavity. Also, contoured surfaces and positions, for fixed restrictor clearance and stator step provided no improvement in leakage resistance, and in some radial and axial position. Flow-visualization techniques are resistance properties of advanced labyrinth seals. A unique restrictor leading-edge extensions of proper dimensions can seal geometries. The effects of isolated, geometric seal geometry are identified and the influence of axial series of 100: I scale, acrylic models of actual rotor and stator elements. Adjustable external controls allow that leakage resistance can be improved through the that of the seal restrictor clearance. The relationship the turbulence generating flow patterns which promote used in conjunction with flow-visuahzation studies to obtain water test facility is used to acquire leakage resistance within the seal cavity, are identified. Each region of |
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| Item Description: | "Major subject: Mechanical Engineering". Vita. |
| Physical Description: | xiii, 89 leaves : illustrations ; 28 cm. Also available online. |
| Bibliography: | Includes bibliographical references. |