in convection heat transfer, what happen to the heat transfer coefficient if the viscosity of the fluid decrease?
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Q: The Nusselt number is a kind of dimensionless number which is a function of convective heat transfer…
A: Nusselt number is the dimension less quantity which is the function of Reynolds number and Prandtl…
Q: Why is heat transfer faster in forced convection compared to natural convection
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Q: 1. The dimensionless A. Prandtl number number not used in forced convection is: B. Reynolds number…
A: Note: Since you have asked multiple question, we will solve the first question for you. If you want…
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Q: If forced convection uses Reynolds number to account for fluid movement during forced convection,…
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Q: Relationship between fluid flow and convection heat transfer
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- The heat transfer rate from hot air by convection at 100C flowing over one side of a flat plate with dimensions 0.1m0.5m is determined to be 125 W when the surface of the plate is kept at 30C. What is the average convection heat transfer coefficient between the plate and the air?Relationship between fluid flow and convection heat transferWhat is the general difference between the coefficient of volume expansion of solids and liquids? Explain
- If forced convection uses Reynolds number to account for fluid movement during forced convection, what dimensionless number is used for natural convection?How is storage modulus and loss modulus relate with diffussivity of a drug molecule pass through a gel? Does higher storage modulus means lower difussivity?If we neglect radiative heat transfer, what is the appropriate heat transfer coefficient value for stagnant ambient air?
- Air at 10 m/s is flowing over a cylinder of D=(1) cm and L = 1 m. Air has thermalconductivity 0.027 W/mK, kinematic viscosity 1.9*10-5 m2/s, and Prandtl number 0.72.Find the Nusselt number uses charts/table also if neededHeat transfer is a discipline of thermal engineering that concerns the generation, use, conversion,and exchange of thermal energy (heat) between physical systems. How do you connect it with thermodynamics and why is it necessary for us, mechanical engineers, to study it?A 6 cm diameter shaft rotates at 3000 rpm in a 20 cm long bearing with a uniform play of 0.2 mm. Under stable operating conditions, both the bearing and the shaft in the vicinity of the oil gap are at 50 ° C, and the viscosity and thermal conductivity of the lubricating oil are 0.05 Ns / m 2 and 0.17 W / mK. Simplifying and solving the equations for continuity, momentum, and energy, determine (a) the maximum oil temperature, (b) the rates of heat transfer to the bearing and shaft, and (c) the mechanical power wasted by viscous dissipation in Oil. Answers: (a) 53.3 ° C, (b) 419 W, (c) 838 W