Reaction of thermal laminar boundary layer to stepwise change in heat conduction and specific heat of the wall in the direction of flow

Journal Article · Tue Mar 01 00:00:00 EST 1988 · High Temp. (Engl. Transl.); (United States)

OSTI ID:6474909

Sapelkin, V A; Sergeev, Yu V

The conjugate problem of nonsteady heat transfer between a laminar boundary layer with a pressure gradient and a wall with stepwise change in its thermophysical properties (heat conduction and volume specific heat) in the longitudinal direction is solved by the finite-difference method for an incompressible liquid and a wall whose internal surface is heat insulated. The results of the calculations show that the reaction of the thermal boundary layer to discontinuity in the thermophysical properties of the wall is nonunique and multi-parametric. Since these parameters determine the thickness of the thermal boundary layer it may be concluded that thin thermal boundary layers react more strongly than thick layers.

• OSTI ID: 6474909
• Journal Information: High Temp. (Engl. Transl.); (United States), Vol. 25:5; Other Information: Translated from Teplofiz. Vys. Temp.; 25: No. 5, 943-949(Sep-Oct 1987)
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
36 MATERIALS SCIENCE
LIQUIDS
LAMINAR FLOW
MATERIALS
THERMODYNAMIC PROPERTIES
WALLS
HEAT TRANSFER
BOUNDARY LAYERS
CARBON STEELS
CHROMIUM STEELS
COOLING SYSTEMS
COPPER
FINITE DIFFERENCE METHOD
MATHEMATICAL MODELS
MULTI-PARAMETER ANALYSIS
PORCELAIN
PRESSURE GRADIENTS
SPECIFIC HEAT
TEXTOLITE
THERMAL CONDUCTIVITY
TITANIUM
ZIRCONIUM
ALLOYS
CHROMIUM ALLOYS
ELEMENTS
ENERGY SYSTEMS
ENERGY TRANSFER
FLUID FLOW
FLUIDS
HIGH ALLOY STEELS
IRON ALLOYS
IRON BASE ALLOYS
ITERATIVE METHODS
LAYERS
METALS
NUMERICAL SOLUTION
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PHYSICAL PROPERTIES
POLYMERS
STAINLESS STEELS
STEELS
TRANSITION ELEMENTS
420400* - Engineering- Heat Transfer & Fluid Flow
360104 - Metals & Alloys- Physical Properties
360204 - Ceramics
Cermets
& Refractories- Physical Properties
360603 - Materials- Properties