Question 47 - In a cylinder with a hollow, let a is outside radius and b is the inside radius. In a steady state temperature distribution with no heat generation, the differential equation is (d / dr) (r dT / dr) = 0 where r is for radius and T is for temperature. (a) Integrate the heat equation above into T(r) in term of r. (b) At r = a, T = c; at r = b, T = d. Find the heat equation of T(r) in term of r, a, b, c, d.
- 1 Answers
- 1705 Views
- I also Faced
- E-Mail Answers
Answer Posted / kang chuen tat (malaysia - pen
Answer 47 - Let r (dT / dr) = e, then dT / dr = e / r. T(r) = e ln r + f by integrating both sides where e and f are constants. (b) Let c = e ln a + f and d = e ln b + f. Subtracting both equations gives c - d = e (ln a - ln b) = e ln (a / b). Then e = (c - d) / [ ln (a / b) ] and f = d - e ln b. T(r) = e ln r + d - e ln b = e ln (r / b) + d = (c - d) [ ln (a / b) ] ln (r / b) + d. The answer is given by Kang Chuen Tat; PO Box 6263, Dandenong, Victoria VIC 3175, Australia; SMS +61405421706; chuentat@hotmail.com; http://kangchuentat.wordpress.com.
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
Explain how can you separate hydrogen peroxide into hydrogen and oxygen?
When using a pumping loop to mix two miscible fluids in a tank, when can the content are considered well mixed?
What is vapour flooding and liquid floodin in distillation?
hi all i have doe cheical engg, but i have to go for iob po interview so can anybody suggest me abt the kind of qns that can be asked.
At what temperature does water have maximum density?
What is the method adopted to minimize shell side pressure drop in a shell?
What is a good relation to use for calculating tube bundle diameter?
Are there any general rules that should be considered when designing a slurry piping system?
PLZ ANYONE SEND ME PLACEMENT PAPERS OF I.O.C.L MY ID---- gaurav.nitw.5609@gmailcom
what is isochronus and droop speed?
Explain how can viscosity affect the design of a mixer?
Explain what types of valves are recommended for slurry services?
Oil and fat containing food items are flushed with nitrogen. Why?
What is the method involved in analyzing powders for composition?
What are some characteristics of bulk solids that can affect their ability to flow properly?
