thermal systems, Mechanical Engineering

Assignment Help:
A motor coil can be modeled as a hollow copper cylinder with an outer diameter
of 50 mm, an inner diameter of 40 mm, and a length of 60 mm. The motor stalls
at time t ¼ 0 and, at this point, the copper experiences a step input in electrical
heating of P0  u(t), where P0 is 350 W. Assume that there is little time for
significant heat loss to the environment so that the copper cylinder can be
considered to be insulated. If the initial temperature is 30 C, find the temperature as a function of time, T(t), analytically using Laplace transforms. Calculate
the time required to reach the breakdown temperature of the wire insulation,
which is approximately 250 C. Write a script file in MATLAB® to: (a) determine
the time for the copper to reach 250 C using the command find; and (b) plot T(t)
over this time interval. Copper has a density of 8960 kg/m3 and a specific heat of
390 J/kg-C.

Related Discussions:- thermal systems

Stress analysis of components and structures, Consider the expansion loop d...

Consider the expansion loop displayed in the diagram below, which is part of a long pipeline.  The loop is made up of a uniform pipe section and is subjected to a temperature raise

Railways, RAILWAYS: Railway transport is one of the important modes of...

RAILWAYS: Railway transport is one of the important modes of transport in India. Its technology is based on the traction of a group of wagons or coaches over a fixed track, co

Determine the position of the neutral axis, An 8 kN.m moment is applied at ...

An 8 kN.m moment is applied at the end of a block fixed into the ground as illustrated in thefigure below. The moment vector (double arrow head representation) acts in line with th

FEM ANSYS Assignment, have assignment in FEM calculation and ANSYS are you ...

have assignment in FEM calculation and ANSYS are you able to solve this kind of assignment

What is the combined stiffnes, A competitor in a hill-climb event finds dur...

A competitor in a hill-climb event finds during practice that his car becomes airborne at a particular point on the hill.  Shortly after landing the lowest point in the car just co

Hydrostatic law for incompressible and compressible fluid, Illustrate Newto...

Illustrate Newton's law of viscosity. Explain the importance of viscosity in fluid motion. Describe the effects of temperature on viscosity of water and that of air? Discuss hyd

Visual realism, VISUAL REALISM: Hidden line and surface removal elimin...

VISUAL REALISM: Hidden line and surface removal eliminates the ambiguities of the displays of three-dimensional models and is considered the first step toward visual realism.

Illustrates the effect of wall movement on earth pressure, Illustrates abou...

Illustrates about the effect of wall movement on earth pressure? Effect of wall movement on earth pressure About fifty years ago Terzaghi conducted a series of tests on larg

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd