ABOUT HEAT EXCHANGE IN A LAMINAR CURRENT FLOWING IN A TUBE

Abstract

An investigation is presented which deals with the joint solution of the equation of heat conductivity for a liquid and a solid (wall of the tube) at the input part of the tube where the heat boundary layer is considerably thinner than the radius of the tube R. In practice, the input area occupies the whole length of the tube. As is known, in the tube there is established a Poiseuille parabolical profile of the velocities u = u sub O (1-r squared/R squared), where u sub O is the maximum velocity in the center of the tube (r = 0). At the input area instead of r a new variable y = R-r is introduced and is limited by small values (y<<R). (Author)

Document Details

Document Type
Technical Report
Publication Date
Oct 15, 1962
Accession Number
AD0288522

Entities

People

  • T.l. Perel'man

Organizations

  • National Air and Space Intelligence Center

Tags

DTIC Thesaurus Topics

  • Boundaries
  • Boundary Layer
  • Conductivity
  • Equations
  • Layers
  • Mathematics
  • Physical Properties
  • Thermal Conductivity

Fields of Study

  • Mathematics

Readers

  • Analytical Mechanics
  • Electrical Engineering
  • Fluid Dynamics.