This paper presents a one-dimensional, semi-analytical model for prediction of the wetted length supported by inclined triangular capillary grooves subject to heating from below. The model utilizes a macroscopic approach employing the concept of an apparent contact angle. Constant liquid properties are assumed and no specific account is taken of surface roughness. The concept of accommodation theory is introduced to account for the change in the radius of curvature of the liquid-vapor interface between the liquid reservoir and the groove proper. Empirical input is required in the form of the axial heat flux profile and the axial profile of the liquid height in the groove. To assist other researchers in the implementation of the model, this paper concludes with a series of design curves. These curves can readily be used to estimate the wetted length (capillary limit) in inclined heated triangular capillary grooves for a variety of operating conditions.
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A Semi-Analytical Model to Predict the Capillary Limit of Heated Inclined Triangular Capillary Grooves
Ivan Catton, Fellow ASME,
e-mail: catton@ucla.edu
Ivan Catton, Fellow ASME
Mechanical, Aerospace, and Nuclear Engineering Department, University Of California, Los Angeles, Los Angeles, CA 90095
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Gustave R. Stroes
Gustave R. Stroes
Mechanical, Aerospace, and Nuclear Engineering Department, University Of California, Los Angeles, Los Angeles, CA 90095
Search for other works by this author on:
Ivan Catton, Fellow ASME
Mechanical, Aerospace, and Nuclear Engineering Department, University Of California, Los Angeles, Los Angeles, CA 90095
e-mail: catton@ucla.edu
Gustave R. Stroes
Mechanical, Aerospace, and Nuclear Engineering Department, University Of California, Los Angeles, Los Angeles, CA 90095
Contributed by the Heat Transfer Division for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received by the Heat Transfer Division March 21, 2000; revision received February 1, 2001. Associate Editor: G. P. Peterson.
J. Heat Transfer. Feb 2002, 124(1): 162-168 (7 pages)
Published Online: February 1, 2001
Article history
Received:
March 21, 2000
Revised:
February 1, 2001
Citation
Catton, I., and Stroes, G. R. (February 1, 2001). "A Semi-Analytical Model to Predict the Capillary Limit of Heated Inclined Triangular Capillary Grooves ." ASME. J. Heat Transfer. February 2002; 124(1): 162–168. https://doi.org/10.1115/1.1404119
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