Chapter 7 External Forced Convection
Flow Across Cylinders And Spheres
7-35C For the laminar flow, the heat transfer coefficient will be the highest at the stagnation point which
corresponds to 0 . In turbulent flow, on the other hand, it will be highest
Chapter 6 Fundamentals of Convection
Chapter 6
FUNDAMENTALS OF CONVECTION
Physical Mechanisms of Forced Convection
6-1C In forced convection, the fluid is forced to flow over a surface or in a tube by external means such as a
pump or a fan. In natural con
Chapter 4 Transient Heat Conduction
4-81 A cubic block and a cylindrical block are exposed to hot gases on all of their surfaces. The center
temperatures of each geometry in 10, 20, and 60 min are to be determined.
Assumptions 1 Heat conduction in the cub
Chapter 6 Fundamentals of Convection
6-39 The oil in a journal bearing is considered. The velocity and temperature distributions, the maximum
temperature, the rate of heat transfer, and the mechanical power wasted in oil are to be determined.
Assumptions
Chapter 5 Numerical Methods in Heat Conduction
5-29 A plate is subjected to specified heat flux and specified temperature on one side, and no conditions on
the other. The finite difference formulation of this problem is to be obtained, and the temperature
Chapter 5 Numerical Methods in Heat Conduction
Special Topic: Controlling the Numerical Error
5-96C The results obtained using a numerical method differ from the exact results obtained analytically
because the results obtained by a numerical method are ap
Chapter 5 Numerical Methods in Heat Conduction
Two-Dimensional Steady Heat Conduction
5-43C For a medium in which the finite difference formulation of a general interior node is given in its
g
l2
simplest form as Tleft + Ttop + Tright + Tbottom 4Tnode + n
Chapter 5 Numerical Methods in Heat Conduction
5-84 A uranium plate initially at a uniform temperature is subjected to insulation on one side and
convection on the other. The transient finite difference formulation of this problem is to be obtained, and
t
Chapter 7 External Forced Convection
Chapter 7
EXTERNAL FORCED CONVECTION
Drag Force and Heat Transfer in External Flow
7-1C The velocity of the fluid relative to the immersed solid body sufficiently far away from a body is
called the free-stream velocity
Chapter 4 Transient Heat Conduction
Transient Heat Conduction in Multidimensional Systems
4-69C The product solution enables us to determine the dimensionless temperature of two- or threedimensional heat transfer problems as the product of dimensionless t
Chapter 4 Transient Heat Conduction
Review Problems
4-105 Two large steel plates are stuck together because of the freezing of the water between the two plates.
Hot air is blown over the exposed surface of the plate on the top to melt the ice. The length
Chapter 4 Transient Heat Conduction
4-118 Internal combustion engine valves are quenched in a large oil bath. The time it takes for the valve
temperature to drop to specified temperatures and the maximum heat transfer are to be determined.
Assumptions 1 T
Chapter 1 Basics of Heat Transfer
Review Problems
1-121 Cold water is to be heated in a 1200-W teapot. The time needed to heat the water is to be determined.
Assumptions 1 Steady operating conditions exist. 2 Thermal properties of the teapot and the water
Chapter 1 Basics of Heat Transfer
1-87E A 200-ft long section of a steam pipe passes through an open space at a specified temperature. The
rate of heat loss from the steam pipe and the annual cost of this energy lost are to be determined.
Assumptions 1 St
Chapter 1 Basics of Heat Transfer
Heat Transfer Mechanisms
1-44C The thermal conductivity of a material is the rate of heat transfer through a unit thickness of the
material per unit area and per unit temperature difference. The thermal conductivity of a
Chapter 1 Basics of Heat Transfer
Chapter 1
BASICS OF HEAT TRANSFER
Thermodynamics and Heat Transfer
1-1C Thermodynamics deals with the amount of heat transfer as a system undergoes a process from one
equilibrium state to another. Heat transfer, on the ot
Chapter 5 Numerical Methods in Heat Conduction
Transient Heat Conduction
5-63C The formulation of a transient heat conduction problem differs from that of a steady heat conduction
problem in that the transient problem involves an additional term that repr
Chapter 7 External Forced Convection
7-52 A steam pipe is exposed to a light winds in the atmosphere. The amount of heat loss from the steam
during a certain period and the money the facility will save a year as a result of insulating the steam pipe
are t