in convection heat transfer, what happen to the heat transfer coefficient if the viscosity of the fluid decrease?
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- Relationship between fluid flow and convection heat transferIn convection heat transfer, what happens to the heat transfer coefficient if the viscosity of the fluid increases? Select the correct response: The heat transfer coefficient remains constant O None of the above The heat transfer coefficient will decreases The heat transfer coefficient will increaseIn convection heat transfer, what happens to the heat transfer coefficient if the viscosity of the fluid decreases? Select the correct response: The heat transfer coefficient remains constant The heat transfer coefficient also increases The heat transfer coefficient partially increases then decreases The heat transfer coefficient will decreases
- title of the book: Engineering ThermofluidsThermodynamics, Fluid Mechanics, and Heat Transfer by Mahmoud MassoudWhy is viscous friction (viscosity) directly proportional to velocity and area and inversely proportional to the distance between layers of fluids?For a gas, which of the following does not vary with temperature? - the gas soecific weight - the gas dynamic viscosity - the gas specific volume - the gas constant R - the gas density
- 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 neededWind blows over a whirlpool hot tub. The air temperature is 290 K with a convection heat transfer coefficient equal to 400 W/m-m- K. The water temperature is 315 Kwith a convection heat transfer coefficient equal to 450 W/m-m-K. Report the temperature at the surface of the water in units of Kand using 4 significant digits. Note that the error band on this answer is 0.5%. Type your nunmeric answer and submitExample(1-14): mixture gas and liquid flow through 0.02 m inside diameter pipe at total flow rate of 0.2 kg/s. if the gas weight fraction is 0.149 what is the pressure drop per unit length of pipe. Where the pipe roughness 0.00015 mm, liquid and gas viscosities are 2x103 pa.s and 1x10-5 pa.s respectively. finaly the liquid and gas densities are 1000 kg/m³ and 60 kg/m³ pa.s respectively.