Cryogenic Modeling of the Heat Transferred by Combined Convection From a Vertical Cylinder in a Horizontal Flow

Prediction of the convective loss from solar thermal-electric receivers is not presently feasible since the scientific basis for such a prediction is not available. These receivers will typically operate in the combined convection region (Gr(,L)/Re(,D)('2) (TURNEQ) 1) with Reynolds numbers above 10('6) and Grashof numbers exceeding 10('11), well above previously reported experimental data. A novel heat transfer technique, the use of cryogenic temperatures for convective modeling, was used in the present investigation to significantly extend the region of measured data for combined convection from a vertical cylinder in a horizontal flow. Reynolds numbers above 5 x 10('5), with Grashof numbers above 10('11), were achieved in a cryogenic heat transfer tunnel which was constructed for this research.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Mechanical Engineering

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2014

Author dc:creator

• Clark, George Leslie, Jr.

• Engineering, Mechanical

Identifier

(UMI)AAI8209557

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/70108