Thermocapillary flow near a cold wall
By: by D. Canright
Contributors: Naval Postgraduate School (U.S.). Dept. of Mathematics
Publisher: Naval Postgraduate School; Available from National Technical Information Service
Published: 1993
Place of publication: Monterey, Calif; Springfield, Va
Language: eng
Subjects: CAPILLARITY; CONVECTION(HEAT TRANSFER); WELDING
Other titles: NPS-MA-93-011.
Description: The following model problem examines the thermocapillary feedback mechanism important      at the edge of weld pools and other materials processes. A pool of liquid with a flat      horizontal free surface is bounded on one side by a vertical solid wall, which is maintained at      a cold temperature to unit depth, and at a warmer temperature below; far away the fluid is at      the warmer temperature. Surface tension is a decreasing function of temperature, so that the      surface thermal gradient drives flow toward the corner. When convection is vigorous, the      flow compresses the thermal gradient which is driving the flow; this positive feedback results      in small local length scales and high velocities near the corner. This problem is examined      through a detailed scaling analysis and through numerical simulation for a range of      parameters.... Thermocapillary flow.
Notes: Title from cover.

"NPS-MA-93-011."

"Technical report for period January 1992 - December 1992."

AD A261 050.

Includes bibliographical references.

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