Collisional heat transfer between two contacting curved surfaces is investigated computationally using the finite difference method and analytically using various asymptotic methods. Transformed coordinates that scale with the contact radius and the diffusion length are used for the computations. Hertzian contact theory of elasticity is used to characterize the contact area as a function of time. For an axisymmetric contact area, a two-dimensional self-similar solution for the thermal field during the initial period of contact is obtained and it serves as an initial condition for the heat transfer simulation throughout the entire duration of collision. A modified 2-D asymptotic result of heat transfer at small Fourier number is obtained. For finite Fourier numbers the heat transfer during the collision has been determined computationally. A closed-form formula is developed to predict the heat transfer as a function of the Fourier number, the thermal diffusivity ratio and conductivity ratio of the impacting particles.
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ASME/JSME 2011 8th Thermal Engineering Joint Conference
March 13–17, 2011
Honolulu, Hawaii, USA
Conference Sponsors:
- Heat Transfer Division
ISBN:
978-0-7918-3892-1
PROCEEDINGS PAPER
Heat Transfer Between Colliding Surfaces and Particles
Renwei Mei,
Renwei Mei
University of Florida, Gainesville, FL
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James F. Klausner,
James F. Klausner
University of Florida, Gainesville, FL
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David W. Hahn
David W. Hahn
University of Florida, Gainesville, FL
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Like Li
University of Florida, Gainesville, FL
Renwei Mei
University of Florida, Gainesville, FL
James F. Klausner
University of Florida, Gainesville, FL
David W. Hahn
University of Florida, Gainesville, FL
Paper No:
AJTEC2011-44167, T10027; 10 pages
Published Online:
March 1, 2011
Citation
Li, L, Mei, R, Klausner, JF, & Hahn, DW. "Heat Transfer Between Colliding Surfaces and Particles." Proceedings of the ASME/JSME 2011 8th Thermal Engineering Joint Conference. ASME/JSME 2011 8th Thermal Engineering Joint Conference. Honolulu, Hawaii, USA. March 13–17, 2011. T10027. ASME. https://doi.org/10.1115/AJTEC2011-44167
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