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首页> 外文学位 >An experimental apparatus for measurement of pressure drop, void fraction, and non-boiling two-phase heat transfer and flow visualization in pipes for all inclinations.
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An experimental apparatus for measurement of pressure drop, void fraction, and non-boiling two-phase heat transfer and flow visualization in pipes for all inclinations.

机译：用于测量所有倾角的管道中的压降，空隙率和非沸腾两相传热和流动可视化的实验设备。

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Scope and Method of Study. This study has been conducted in order to present the design, construction, and validation of a state-of-the-art experimental apparatus for the purposes of measurement of pressure drop, void fraction, and non-boiling two-phase heat transfer and flow visualization in pipes with inclination angles ranging between positive and negative ninety degrees. Methods of validation for each intended capability of the experimental apparatus have included comparison of the data obtained with established correlations. In addition, void fraction measurements have been compared against experimental data obtained from four independent sources. In the cases of single-phase heat transfer and two-phase non-boiling heat transfer, direct comparisons have been made between data obtained with the newly completed experimental apparatus and data previously collected at the Oklahoma State University heat transfer laboratory. Examples of the flow visualization capabilities as well as methodology have been presented.;Findings and Conclusions. Validations of the experimental apparatus for each of the intended modes of data collection including pressure drop, void fraction, and non-boiling two-phase heat transfer have proved highly satisfactory. In addition flow visualization was conducted using the experimental apparatus with excellent results. Having validated the functionality of this experimental apparatus, it is intended that it be utilized to further test correlations that have been developed for two-phase non-boiling heat transfer in pipes and void fraction. It is intended that the experimental apparatus be utilized to continue to develop these equations so that they are applicable for any angle of inclination between positive and negative ninety degrees. It is also intended that the device be used for generating flow maps for inclinations between positive and negative ninety degrees. The device should be considered both a highly capable and versatile addition to the Oklahoma State University heat transfer laboratory.
机译：研究范围和方法。进行这项研究是为了介绍用于测量压降，空隙率和非沸腾两相传热和流动的最新实验设备的设计，构造和验证。倾斜角度介于正负90度之间的管道中的可视化效果。对实验设备的每种预期功能的验证方法包括将获得的数据与已建立的相关性进行比较。另外，将空隙率测量值与从四个独立来源获得的实验数据进行了比较。在单相传热和两相非沸腾传热的情况下，使用新完成的实验设备获得的数据与以前在俄克拉荷马州立大学传热实验室收集的数据之间进行了直接比较。给出了流程可视化功能和方法的示例。；发现和结论。实验设备针对每种预期的数据收集模式（包括压降，空隙率和非沸腾两相传热）的验证都非常令人满意。另外，使用实验装置进行流动可视化具有优异的结果。验证了此实验设备的功能后，可以将其用于进一步测试为管道中的两相非沸腾传热和空隙率而开发的相关性。打算利用实验设备来继续发展这些方程，以便它们适用于正负九十度之间的任何倾斜角。还打算将该设备用于产生用于正和负九十度之间的倾斜度的流图。该设备应该被认为是俄克拉荷马州立大学传热实验室的一种功能强大且用途广泛的产品。

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