The figure shows the cross-section of a small brick furnace, the inside wall of which is subjected to a temperature of 1200 °C while the outer wall is cooled by convection (h = 10 W/m?.K). Ambient temperature is 20 °C while the thermal conductivity of the furnace brick is 0.7 W/m.K. Ignoring the variation of temperature with depth and using the finite difference method: (a) Develop the nodal network by using 4x = 4x = 70 mm. [Hint: Take advantage of symmetry.] (b) Develop finite-difference equations for all the nodes. Ambient air: 20 °C, 10 W/m².K 1200 °C 400 mm ww 004

The figure shows the cross-section of a small brick furnace, the inside wall of which is subjected to a temperature of 1200 °C while the outer wall is cooled by convection (h = 10 W/m?.K). Ambient temperature is 20 °C while the thermal conductivity of the furnace brick is 0.7 W/m.K. Ignoring the variation of temperature with depth and using the finite difference method: (a) Develop the nodal network by using 4x = 4x = 70 mm. [Hint: Take advantage of symmetry.] (b) Develop finite-difference equations for all the nodes. Ambient air: 20 °C, 10 W/m².K 1200 °C 400 mm ww 004

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Please show the step-by-step solution. Please use pen and paper to solve. Thank you. Direction: Determine the degree of indeterminacy and stability of the following structures. Classify each as stable or unstable. 囲 8.
A closed cylindrical tank, placed horizontally, 410 mm in internal diameter and 2.0 mm thick is subjected to an axial compressive force (along its longitudinal axis) and uniform internal pressure. The stresses acting on an element of side is shown in the figure.a. What is the magnitude of the internal pressure in MPa? b. What is the applied axial force in kN?
3) The apparatus shown below is made of a tungsten bar AC and the magnesium bar BD that are attached to a pointer CDP by pins at C and D. Let the coefficients of thermal expansion for magnesium and tungsten be denoted by Am and C,, respectively. Derive a formula for the vertical displacement O (positive upward) of point P due to a uniform temperature increase Ar. Could such a device be used as a thermometer? ΔΤ B
Problem-1 If the laminar velocity profile is approximated by the cubic-order polynomial ū = a1 + a2ỹ+ azy² + a4ÿ³ where, ū = u/Ue and y = y/8 with U, and & being the edge velocity and boundary-layer thickness, respectively. a) Find out the velocity profile, by determining the unknown coefficients a1, a2, az and a4. Plot the velocity profile. b) Find out the analytical expression for the boundary layer, displacement and momentum thickness and also find out their stream-wise variation as a function of x. Specifically %3D prove that 8/a = 4.64/VRe,, 8./x = 1.74// Re, and 0/x = 0.646//Re,
Select the most appropriate answer. O Bemoulli eg was derived by applying Newton's 2nd law to a particle and then integrating along a streamline: while Energy eg was derived using the 1st law of thermodynamics & consequently the Reynolds transoort theorem. Energy eg includes both mechanical.and thermal eneray, while Bernouli eg involves only.mechanical eneray. Bernoulli eg is applied by selecting two.points (can be anywhere) on a streamline (irrotational flow) and then equating terms at those points, while Energy eg is applied by selecting an inlet & on outlet sections and then equating terms at those sections. Energy eg applies to steady. incompressible. viscous flow with additional energies through the pumR. turbine, and heat engines: while Bemoulli eg applies to steady. incompressible, and inviscid flow (h = 0, a = 1). Under special circumstances, Bernoulli eg converts into Energy eg if pump or turbine added along the streamline Bernouli eg was derived by applying Newtan's 2nd law…
Q-A thin walled spherical shell is subjected to an internal pressure. If the radius of the shell is increased by 1% and the thickness is reduced by 1%, with the internal pressure remaining the same, the percentage change in the circumferential (hoop) stress is..
STRUCTURAL ANALYSIS II
Q..c,.
A bar in the shape of a solid truncated cone of circular cross-section is situated between two rigid supports which constrain the bar from any change of axial length. The temperature of the entire bar is then raised by AT. Assume that the cross-sections perpendicular to the longitudinal axis of symmetry remain plane and neglect localized end effects due to the end supports. Determine the normal stresses at any point in the bar.