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1. Fill in the blanks. a. All the resistance to transmission of heat between a flowing fluid and the body containing the fluid is due to b Laminar flow of a fuid is encountered at Re 2100. c Turbulent flow of a fluid is encountered at Re, 4000

1. Fill in the blanks. a. All the resistance to transmission of heat between a flowing fluid and the body containing the fluid is due to b Laminar flow of a fuid is encountered at Re 2100. c Turbulent flow of a fluid is encountered at Re, 4000

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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MET 214 NATURAL CONVECTION SYSTEMS ASMod-3a Assignment Sheets 1. Fill in the blanks. a. All the resistance to transmission of heat between a flowing fluid and the body containing the fluid is due to b Laminar flow of a fluid is encountered at Re 2100. c Turbulent flow of a fluid is encountered at Re 4000. 2 List the functional relationships between Nusselt number (Nu), Grashot number (Gr), Reynolds number (Re) and Prandtl number (Pr) for natural and forced convection. 3. List the equations giving the following dimensionless groups used to correlate convection heat transfer. a. Reynolds number Re= & Prandt number Pr= C Grashof number GrD d Nusselt number Nu = 4. (True or False) In the application of the dimensionless groups in (1) above, any system of units may be used as the final result will permit ll units disappear by cancellation 5. List the empirical relationship used to obtain the average Nusselt number (Nu) for a fluid flowing in a tube a. under laminar flow conditions h under turbulent flow conditions 6. Air at 150°C is heated as it flows through a tube with a diameter of 5 cm at a velocity of 5 m/s. Calculate the heat transfer per unit length of tube if a constant heat flux condition is maintained at the wall and the wall temperature is 54'C above the air temperature, all along the length of the tube. The properties of air at the bulk mean temperature are as follows:
Transcribed Image Text:MET 214 NATURAL CONVECTION SYSTEMS ASMod-3a Assignment Sheets 1. Fill in the blanks. a. All the resistance to transmission of heat between a flowing fluid and the body containing the fluid is due to b Laminar flow of a fluid is encountered at Re 2100. c Turbulent flow of a fluid is encountered at Re 4000. 2 List the functional relationships between Nusselt number (Nu), Grashot number (Gr), Reynolds number (Re) and Prandtl number (Pr) for natural and forced convection. 3. List the equations giving the following dimensionless groups used to correlate convection heat transfer. a. Reynolds number Re= & Prandt number Pr= C Grashof number GrD d Nusselt number Nu = 4. (True or False) In the application of the dimensionless groups in (1) above, any system of units may be used as the final result will permit ll units disappear by cancellation 5. List the empirical relationship used to obtain the average Nusselt number (Nu) for a fluid flowing in a tube a. under laminar flow conditions h under turbulent flow conditions 6. Air at 150°C is heated as it flows through a tube with a diameter of 5 cm at a velocity of 5 m/s. Calculate the heat transfer per unit length of tube if a constant heat flux condition is maintained at the wall and the wall temperature is 54'C above the air temperature, all along the length of the tube. The properties of air at the bulk mean temperature are as follows:
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