Viscosity variation and velocity gradients in a non isothermal film, water is falling down a vertical wall

Question:

Viscosity variation and velocity gradients in a non isothermal film, water is falling down a vertical wall in a film 0.1 mm thick. The water temperature is 100°C at the free liquid surface and 80°C at the wall surface.

(a) Show that the maximum fractional deviation between viscosities predicted by Eqs. 11.4-17 and 18 occurs when T = √T₀T_δ.

(b) Calculate the maximum fractional deviation for the conditions given.

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For book-img-for-question

Transport Operations

ISBN: 9780470115398

2nd Edition

Authors: Allen Stuart

See More Books

Question Posted: Dec 06, 2010 12:04 AM

See More Questions

The boiling points, surface tensions, and viscosities of water and several alchohols are as follows: (a) For ethanol, propanol, and n-butanol the boiling points, surface tensions, and viscosities all...
For liquid water the isothermal compressibility is given by; where r and b are functions of temperature only. If 1 kg of water is compressed isothermally and reversibly from I to 500 bar at 60(C. how...
Given is steady isothermal flow of water at 20°C through the device in Fig. P3.126. Heat-transfer, gravity, and temperature effects are negligible. Known data are D1 = 9 cm, Q1 = 220 m3/h, p1 =...
Not sure if this note is applicable to the problem? (A2) Prove there is a bijection between any two countably infinite sets.
Huts sells hot dog $2/each. The variable cost is $1 and $0.35 is fixed overhead cost. A summer camp wishes to buy 100 hotdogs for $1.25/each. What is the profit for hut?
Find the Maclaurin polynomial of order n (n odd) for sin x. Then use it with n = 5 to approximate each of the following. (This example should convince you that the Maclaurin approximation can be...
The table below describes a hypothetical experiment on 2400 persons. Each row of the table specifies a category of person, as defined by their pre-treatment predictor $x$, treatment indicator $T$,...
On January 1, 2006, Mason Co. entered into a 12-year lease on a building. The lease contract requires (1) annual (prepaid) rental payments of $ 36,000 each January 1 throughout the life of the lease...
1. Which company generates the most cash inflow from operating activities? 2. Which of these companies report "Net cash used in investing activities"? 3. Calculate the total net increase or decrease...
Refer to the adjusted trial balance of Green Lawns, Inc., illustrated in Exercise 5.2 to respond to the following items. a. Prepare all necessary closing entries at December 31, current year. b....
Temperature in a friction bearing, calculate the maximum temperature in the friction bearing of Problem 3Aol, assuming the thermal conductivity of the lubricant to be 4.0 x 10 -4 cal/s cm C, the...
Transpiration cooling (a) Calculate the temperature distribution between the two shells of Example 11.4-4 for radial mass flow rates of zero and 10 -5 g/s for the following conditions: (b) Compare...
Refer to the table for Exercise 5.109. a. Find the probability that a randomly chosen respondent is conservative given that she or he is a Republican. b. Find the probability that a randomly chosen...
What is wrong with the expression P(A) + P(A) = 0.5?
Let R be the event of randomly selecting a senator and getting a Republican, and let D represent the event of randomly selecting a second different senator and getting a Democrat. Use words to...
A: When a baby is born, it is a girl. B: When a single die is rolled, the outcome is 6. Independent and Dependent Events. (a) determine whether events A and B are independent or dependent, (b) find...
A: When a month is randomly selected and ripped from a calendar and destroyed, it is July. B: When a different month is randomly selected and ripped from a calendar, it is November. Independent and...
Let event A = subject is telling the truth and event B = polygraph test indicates that the subject is lying. Use your own words to translate the notation P(B A) into a verbal statement.
Two consumer staple companiesSwiss chocolate specialist Lindt and global food producer Nestlhave costs that are constantly affected by inflation and deflation. Exhibit 29 presents a common size...
How is use of the word consistent helpful in fraud reports?
(A) Represent the reaction of aluminum with hydrochloric acid to produce AlCl 3 (aq) and H 2 (g) by oxidation and reduction half-equations and an overall equation. (B) Represent the reaction of...
Suppose that a country has a fixed exchange rate and no capital controls. Due to a political crisis, projections for economic growth in coming years are revised sharply downward. As a result of the...
Capital flows can cause problems for exchange-rate stability. a. Why do countries allow the free movement of capital? b. Are some countries more likely to allow the free movement of capital than...
Derive the form of the Longmuir isotherm for the complete dissociative adsorption of SO2, i.e.: Diagrams included in the Solution
Reflecting on the book Who Gets Promoted, Who Doesn't, and Why (Asher, 2008), answer the following questions in depth. Explain the statement, "all business is sales." What six things matter? If...
Reflecting on the book Who Gets Promoted, Who Doesn't, and Why (Asher, 2008), answer the following questions in depth. No matter what you have done in the past, the boss really doesn't care. Why?...
Do you think Richard Scrushy should have been found guilty or acquitted for his role in the case against HealthSouth? https://www.wsj.com/articles/SB111702610398942860

Viscosity variation and velocity gradients in a non isothermal film, water is falling down a vertical wall

Question:

Step by Step Answer:

Viscosity variation and velocity gradients in a nonisothermal film a We begin by determining the tem...View the full answer

Transport Operations

Students also viewed these Chemical Engineering questions